Compare SB Acoustics SB12CACS25-8 SB Acoustics SB12CACS25-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 4 in
Nominal impedance 8 Ω
Free-air resonance · Fs 51 Hz
Total Q · Qts 0.37
Equivalent volume · Vas 6.5 L
DC resistance · Re 6.4 Ω
Electrical Q · Qes 0.4
Mechanical Q · Qms 4.85
Effective piston area · Sd 50 cm²
Moving mass · Mms 5.3 g
Force factor · Bl 5.2 Tm
Voice-coil inductance · Le 0.34 mH
Sensitivity 85.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 123 mm
Baffle cutout diameter 98.2 mm
Mounting depth 60.7 mm
Hifi Kit SKU SB12CACS25-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1(05.10.2017)
4 ″ 8 Ω 51 Hz 0.37 6.5 L 98.2 mm Compare SB Acoustics SB13PFC25-8 SB Acoustics SB13PFC25-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 45 Hz
Total Q · Qts 0.33
Equivalent volume · Vas 13.4 L
DC resistance · Re 5.6 Ω
Electrical Q · Qes 0.39
Mechanical Q · Qms 2.2
Effective piston area · Sd 87 cm²
Moving mass · Mms 10 g
Force factor · Bl 6.2 Tm
Voice-coil inductance · Le 0.77 mH
Sensitivity 87 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 4.5 mm
Excursion definition One-way; half of the datasheet’s 9 mm peak-to-peak linear coil travel.
Outer dimension (listed) 134.5 mm
Baffle cutout diameter 122 mm
Mounting depth 69 mm
Hifi Kit SKU 13031 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1 (11.02.2013)
5 ″ 8 Ω 45 Hz 0.33 13.4 L 122 mm Compare SB Acoustics SB15CAC30-4 SB Acoustics SB15CAC30-4 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 4 Ω
Free-air resonance · Fs 32.5 Hz
Total Q · Qts 0.31
Equivalent volume · Vas 20.2 L
DC resistance · Re 3.1 Ω
Electrical Q · Qes 0.34
Mechanical Q · Qms 4.61
Effective piston area · Sd 82 cm²
Moving mass · Mms 11.3 g
Force factor · Bl 4.6 Tm
Voice-coil inductance · Le 0.12 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 150 mm
Baffle cutout diameter 124 mm
Mounting depth 68.3 mm
Hifi Kit SKU SB15CAC30-4 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1 (03.10.2017)
5 ″ 4 Ω 32.5 Hz 0.31 20.2 L 124 mm Compare SB Acoustics SB15CAC30-8 SB Acoustics SB15CAC30-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 35.5 Hz
Total Q · Qts 0.38
Equivalent volume · Vas 17.9 L
DC resistance · Re 5.7 Ω
Electrical Q · Qes 0.42
Mechanical Q · Qms 4.77
Effective piston area · Sd 82 cm²
Moving mass · Mms 10.7 g
Force factor · Bl 5.7 Tm
Voice-coil inductance · Le 0.14 mH
Sensitivity 86 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 150 mm
Baffle cutout diameter 124 mm
Mounting depth 68.3 mm
Hifi Kit SKU SB15CAC30-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1 (03.10.2017)
5 ″ 8 Ω 35.5 Hz 0.38 17.9 L 124 mm Compare SB Acoustics SB15NBAC30-4 SB Acoustics SB15NBAC30-4 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 4 Ω
Free-air resonance · Fs 33 Hz
Total Q · Qts 0.29
Equivalent volume · Vas 21 L
DC resistance · Re 3.1 Ω
Electrical Q · Qes 0.31
Mechanical Q · Qms 4.4
Effective piston area · Sd 82 cm²
Moving mass · Mms 10.6 g
Force factor · Bl 4.7 Tm
Voice-coil inductance · Le 0.12 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 150 mm
Baffle cutout diameter 124 mm
Mounting depth 68.3 mm
Hifi Kit SKU SB15NBAC30-4 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.0 (09.01.2017)
5 ″ 4 Ω 33 Hz 0.29 21 L 124 mm Compare SB Acoustics SB15NBAC30-8 SB Acoustics SB15NBAC30-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 35.5 Hz
Total Q · Qts 0.37
Equivalent volume · Vas 17 L
DC resistance · Re 5.7 Ω
Electrical Q · Qes 0.41
Mechanical Q · Qms 4.22
Effective piston area · Sd 82 cm²
Moving mass · Mms 10 g
Force factor · Bl 5.7 Tm
Voice-coil inductance · Le 0.14 mH
Sensitivity 85.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 150 mm
Baffle cutout diameter 124 mm
Mounting depth 68.3 mm
Hifi Kit SKU SB15NBAC30-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.0 (10.01.2017)
5 ″ 8 Ω 35.5 Hz 0.37 17 L 124 mm Compare SB Acoustics SB16PFCR25-4 SB Acoustics SB16PFCR25-4 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 4 Ω
Free-air resonance · Fs 35 Hz
Total Q · Qts 0.34
Equivalent volume · Vas 32.7 L
DC resistance · Re 3.2 Ω
Electrical Q · Qes 0.39
Mechanical Q · Qms 2.76
Effective piston area · Sd 124 cm²
Moving mass · Mms 13.8 g
Force factor · Bl 5 Tm
Voice-coil inductance · Le 0.56 mH
Sensitivity 89.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 4.5 mm
Excursion definition One-way; half of the datasheet’s 9 mm peak-to-peak linear coil travel.
Outer dimension (listed) 176 mm
Baffle cutout diameter 144.5 mm
Mounting depth 76.7 mm
Hifi Kit SKU SB16PFCR25-4 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1 (15.02.2019)
6.5 ″ 4 Ω 35 Hz 0.34 32.7 L 144.5 mm Compare SB Acoustics SB16PFCR25-8 SB Acoustics SB16PFCR25-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 38 Hz
Total Q · Qts 0.4
Equivalent volume · Vas 27 L
DC resistance · Re 5.6 Ω
Electrical Q · Qes 0.48
Mechanical Q · Qms 2.5
Effective piston area · Sd 124 cm²
Moving mass · Mms 13.8 g
Force factor · Bl 6.2 Tm
Voice-coil inductance · Le 0.77 mH
Sensitivity 87 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 4.5 mm
Excursion definition One-way; half of the datasheet’s 9 mm peak-to-peak linear coil travel.
Outer dimension (listed) 176 mm
Baffle cutout diameter 144.5 mm
Mounting depth 76.7 mm
Hifi Kit SKU SB16PFCR25-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1 (15.02.2019)
6.5 ″ 8 Ω 38 Hz 0.4 27 L 144.5 mm Compare SB Acoustics SB17CAC35-4 SB Acoustics SB17CAC35-4 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 4 Ω
Free-air resonance · Fs 29.5 Hz
Total Q · Qts 0.29
Equivalent volume · Vas 37.8 L
DC resistance · Re 3.1 Ω
Electrical Q · Qes 0.31
Mechanical Q · Qms 4.7
Effective piston area · Sd 118 cm²
Moving mass · Mms 15.2 g
Force factor · Bl 5.3 Tm
Voice-coil inductance · Le 0.13 mH
Sensitivity 90 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5.5 mm
Excursion definition One-way; half of the datasheet’s 11 mm peak-to-peak linear coil travel.
Outer dimension (listed) 171 mm
Baffle cutout diameter 145 mm
Mounting depth 75 mm
Hifi Kit SKU SB17CAC35-4 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.2 (08.01.2019)
6.5 ″ 4 Ω 29.5 Hz 0.29 37.8 L 145 mm Compare SB Acoustics SB17CAC35-8 SB Acoustics SB17CAC35-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 28 Hz
Total Q · Qts 0.36
Equivalent volume · Vas 42 L
DC resistance · Re 5.7 Ω
Electrical Q · Qes 0.4
Mechanical Q · Qms 4.46
Effective piston area · Sd 118 cm²
Moving mass · Mms 15.4 g
Force factor · Bl 6.2 Tm
Voice-coil inductance · Le 0.15 mH
Sensitivity 86.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5.5 mm
Excursion definition One-way; half of the datasheet’s 11 mm peak-to-peak linear coil travel.
Outer dimension (listed) 171 mm
Baffle cutout diameter 145 mm
Mounting depth 75 mm
Hifi Kit SKU SB17CAC35-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.2 (08.01.2019)
6.5 ″ 8 Ω 28 Hz 0.36 42 L 145 mm Compare SB Acoustics SB17NBAC35-4 SB Acoustics SB17NBAC35-4 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 4 Ω
Free-air resonance · Fs 30 Hz
Total Q · Qts 0.29
Equivalent volume · Vas 42.6 L
DC resistance · Re 3.1 Ω
Electrical Q · Qes 0.31
Mechanical Q · Qms 4.3
Effective piston area · Sd 118 cm²
Moving mass · Mms 12.4 g
Force factor · Bl 4.9 Tm
Voice-coil inductance · Le 0.13 mH
Sensitivity 90 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5.5 mm
Excursion definition One-way; half of the datasheet’s 11 mm peak-to-peak linear coil travel.
Outer dimension (listed) 171 mm
Baffle cutout diameter 150 mm
Mounting depth 75 mm
Hifi Kit SKU SB17NBAC35-4 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.4 (16.02.2016)
6.5 ″ 4 Ω 30 Hz 0.29 42.6 L 150 mm Compare SB Acoustics SB17NBAC35-8 SB Acoustics SB17NBAC35-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 31.5 Hz
Total Q · Qts 0.35
Equivalent volume · Vas 45 L
DC resistance · Re 5.7 Ω
Electrical Q · Qes 0.38
Mechanical Q · Qms 4.1
Effective piston area · Sd 118 cm²
Moving mass · Mms 12.5 g
Force factor · Bl 5.9 Tm
Voice-coil inductance · Le 0.15 mH
Sensitivity 86.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5.5 mm
Excursion definition One-way; half of the datasheet’s 11 mm peak-to-peak linear coil travel.
Outer dimension (listed) 171 mm
Baffle cutout diameter 145 mm
Mounting depth 75 mm
Hifi Kit SKU SB17NBAC35-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.0 (09.01.2017)
6.5 ″ 8 Ω 31.5 Hz 0.35 45 L 145 mm Compare SB Acoustics SB20PFCR30-4 SB Acoustics SB20PFCR30-4 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 4 Ω
Free-air resonance · Fs 34 Hz
Total Q · Qts 0.33
Equivalent volume · Vas 66.2 L
DC resistance · Re 3.4 Ω
Electrical Q · Qes 0.37
Mechanical Q · Qms 2.78
Effective piston area · Sd 216 cm²
Moving mass · Mms 22.4 g
Force factor · Bl 6.6 Tm
Voice-coil inductance · Le 0.71 mH
Sensitivity 92.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5.75 mm
Excursion definition One-way; half of the datasheet’s 11.5 mm peak-to-peak linear coil travel.
Outer dimension (listed) 218 mm
Baffle cutout diameter 187 mm
Mounting depth 82.4 mm
Hifi Kit SKU SB20PFCR30-4 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1 (15.02.2019)
8 ″ 4 Ω 34 Hz 0.33 66.2 L 187 mm Compare SB Acoustics SB20PFCR30-8 SB Acoustics SB20PFCR30-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 8 Ω
Free-air resonance · Fs 34 Hz
Total Q · Qts 0.37
Equivalent volume · Vas 66.2 L
DC resistance · Re 5.6 Ω
Electrical Q · Qes 0.43
Mechanical Q · Qms 2.66
Effective piston area · Sd 216 cm²
Moving mass · Mms 21.2 g
Force factor · Bl 7.7 Tm
Voice-coil inductance · Le 0.84 mH
Sensitivity 90.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5.75 mm
Excursion definition One-way; half of the datasheet’s 11.5 mm peak-to-peak linear coil travel.
Outer dimension (listed) 218 mm
Baffle cutout diameter 187 mm
Mounting depth 82.4 mm
Hifi Kit SKU SB20PFCR30-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
The manufacturer marks this datasheet as preliminary.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1 (15.02.2019)
8 ″ 8 Ω 34 Hz 0.37 66.2 L 187 mm Compare SB Acoustics SB23MFCL45-4 SB Acoustics SB23MFCL45-4 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 4 Ω
Free-air resonance · Fs 27 Hz
Total Q · Qts 0.34
Equivalent volume · Vas 37 L
DC resistance · Re 3.3 Ω
Electrical Q · Qes 0.36
Mechanical Q · Qms 7.7
Effective piston area · Sd 210 cm²
Moving mass · Mms 59 g
Force factor · Bl 9.6 Tm
Voice-coil inductance · Le 0.73 mH
Sensitivity 87.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 12 mm
Excursion definition One-way; half of the datasheet’s 24 mm peak-to-peak linear coil travel.
Outer dimension (listed) 234 mm
Baffle cutout diameter 203 mm
Mounting depth 122.1 mm
Hifi Kit SKU SB23MFCL45-4 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.3 (11.03.2016)
8 ″ 4 Ω 27 Hz 0.34 37 L 203 mm Compare SB Acoustics SB23MFCL45-8 SB Acoustics SB23MFCL45-8 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 8 Ω
Free-air resonance · Fs 28.5 Hz
Total Q · Qts 0.43
Equivalent volume · Vas 37 L
DC resistance · Re 6.2 Ω
Electrical Q · Qes 0.46
Mechanical Q · Qms 7.3
Effective piston area · Sd 210 cm²
Moving mass · Mms 53 g
Force factor · Bl 11.3 Tm
Voice-coil inductance · Le 1.02 mH
Sensitivity 85 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 10.5 mm
Excursion definition One-way; half of the datasheet’s 21 mm peak-to-peak linear coil travel.
Outer dimension (listed) 234 mm
Baffle cutout diameter 203 mm
Mounting depth 122.1 mm
Hifi Kit SKU SB23MFCL45-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.3 (11.03.2016)
8 ″ 8 Ω 28.5 Hz 0.43 37 L 203 mm Compare SB Acoustics SB29NRX75-6 SB Acoustics SB29NRX75-6 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 6 Ω
Free-air resonance · Fs 21 Hz
Total Q · Qts 0.35
Equivalent volume · Vas 102 L
DC resistance · Re 4.2 Ω
Electrical Q · Qes 0.38
Mechanical Q · Qms 5.7
Effective piston area · Sd 312 cm²
Moving mass · Mms 78 g
Force factor · Bl 10.7 Tm
Voice-coil inductance · Le 1.8 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 11 mm
Excursion definition One-way; half of the datasheet’s 22 mm peak-to-peak linear coil travel.
Outer dimension (listed) 290 mm
Baffle cutout diameter 249 mm
Mounting depth 119 mm
Hifi Kit SKU SB29NRX75-6 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
10 ″ 6 Ω 21 Hz 0.35 102 L 249 mm Compare SB Acoustics SB29NRX75-8 SB Acoustics SB29NRX75-8 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 8 Ω
Free-air resonance · Fs 26 Hz
Total Q · Qts 0.37
Equivalent volume · Vas 85.6 L
DC resistance · Re 6.2 Ω
Electrical Q · Qes 0.39
Mechanical Q · Qms 7.06
Effective piston area · Sd 311 cm²
Moving mass · Mms 58.9 g
Force factor · Bl 12.4 Tm
Voice-coil inductance · Le 1.34 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 11 mm
Excursion definition One-way; half of the datasheet’s 22 mm peak-to-peak linear coil travel.
Outer dimension (listed) 290 mm
Baffle cutout diameter 249 mm
Mounting depth 119 mm
Hifi Kit SKU SB29NRX75-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.1 (08.08.2019)
10 ″ 8 Ω 26 Hz 0.37 85.6 L 249 mm Compare SB Acoustics SB34NRX75-6 SB Acoustics SB34NRX75-6 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 12 in
Nominal impedance 6 Ω
Free-air resonance · Fs 19 Hz
Total Q · Qts 0.4
Equivalent volume · Vas 260 L
DC resistance · Re 4.2 Ω
Electrical Q · Qes 0.43
Mechanical Q · Qms 5.1
Effective piston area · Sd 508 cm²
Moving mass · Mms 99 g
Force factor · Bl 10.7 Tm
Voice-coil inductance · Le 1.8 mH
Sensitivity 90 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 11 mm
Excursion definition One-way; half of the datasheet’s 22 mm peak-to-peak linear coil travel.
Outer dimension (listed) 346 mm
Baffle cutout diameter 302 mm
Mounting depth 142 mm
Hifi Kit SKU SB34NRX75-6 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
12 ″ 6 Ω 19 Hz 0.4 260 L 302 mm Compare SB Acoustics SB34NRXL75-8 SB Acoustics SB34NRXL75-8 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 12 in
Nominal impedance 8 Ω
Free-air resonance · Fs 22 Hz
Total Q · Qts 0.28
Equivalent volume · Vas 205 L
DC resistance · Re 6.2 Ω
Electrical Q · Qes 0.29
Mechanical Q · Qms 5.5
Effective piston area · Sd 508 cm²
Moving mass · Mms 93 g
Force factor · Bl 16.6 Tm
Voice-coil inductance · Le 1.2 mH
Sensitivity 91 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 10 mm
Excursion definition One-way; half of the datasheet’s 20 mm peak-to-peak linear coil travel.
Outer dimension (listed) 346 mm
Baffle cutout diameter 305 mm
Mounting depth 146 mm
Hifi Kit SKU SB34NRXL75-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV.0 (17.10.2012)
12 ″ 8 Ω 22 Hz 0.28 205 L 305 mm Compare SB Acoustics Satori MW16P-8 SB Acoustics Satori MW16P-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 29 Hz
Total Q · Qts 0.33
Equivalent volume · Vas 48 L
DC resistance · Re 6.2 Ω
Electrical Q · Qes 0.35
Mechanical Q · Qms 4.5
Effective piston area · Sd 119 cm²
Moving mass · Mms 12.4 g
Force factor · Bl 6.3 Tm
Voice-coil inductance · Le 0.2 mH
Sensitivity 87.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6 mm
Excursion definition One-way; half of the datasheet’s 12 mm peak-to-peak linear coil travel.
Outer dimension (listed) 165 mm
Baffle cutout diameter 140.1 mm
Mounting depth 75.6 mm
Hifi Kit SKU MW16P-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
6.5 ″ 8 Ω 29 Hz 0.33 48 L 140.1 mm Compare SB Acoustics Satori MW19P-8 SB Acoustics Satori MW19P-8 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 7 in
Nominal impedance 8 Ω
Free-air resonance · Fs 32.5 Hz
Total Q · Qts 0.33
Equivalent volume · Vas 48 L
DC resistance · Re 6 Ω
Electrical Q · Qes 0.36
Mechanical Q · Qms 4.06
Effective piston area · Sd 158 cm²
Moving mass · Mms 17.9 g
Force factor · Bl 7.8 Tm
Voice-coil inductance · Le 0.2 mH
Sensitivity 89 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6.7 mm
Excursion definition One-way; half of the datasheet’s 13.4 mm peak-to-peak linear coil travel.
Outer dimension (listed) 187 mm
Baffle cutout diameter 163 mm
Mounting depth 90.2 mm
Hifi Kit SKU MW19P-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV. 2 (11.03.2016)
7 ″ 8 Ω 32.5 Hz 0.33 48 L 163 mm Compare SB Acoustics Satori WO24P-4 SB Acoustics Satori WO24P-4 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 9 in
Nominal impedance 4 Ω
Free-air resonance · Fs 28 Hz
Total Q · Qts 0.4
Equivalent volume · Vas 71 L
DC resistance · Re 3.3 Ω
Electrical Q · Qes 0.42
Mechanical Q · Qms 6.7
Effective piston area · Sd 255 cm²
Moving mass · Mms 42 g
Force factor · Bl 7.6 Tm
Voice-coil inductance · Le 0.29 mH
Sensitivity 91 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 8.5 mm
Excursion definition One-way; half of the datasheet’s 17 mm peak-to-peak linear coil travel.
Outer dimension (listed) 242 mm
Baffle cutout diameter 203 mm
Mounting depth 116.4 mm
Hifi Kit SKU WO24P-4 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV. 1 (18.05.2017)
9 ″ 4 Ω 28 Hz 0.4 71 L 203 mm Compare SB Acoustics Satori WO24P-8 SB Acoustics Satori WO24P-8 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 9 in
Nominal impedance 8 Ω
Free-air resonance · Fs 24.5 Hz
Total Q · Qts 0.38
Equivalent volume · Vas 87.5 L
DC resistance · Re 5.8 Ω
Electrical Q · Qes 0.41
Mechanical Q · Qms 5.7
Effective piston area · Sd 255 cm²
Moving mass · Mms 44.5 g
Force factor · Bl 9.9 Tm
Voice-coil inductance · Le 0.56 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 8.5 mm
Excursion definition One-way; half of the datasheet’s 17 mm peak-to-peak linear coil travel.
Outer dimension (listed) 242 mm
Baffle cutout diameter 209.3 mm
Mounting depth 116.4 mm
Hifi Kit SKU WO24P-8 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
REV. 1 (06.01.2017)
9 ″ 8 Ω 24.5 Hz 0.38 87.5 L 209.3 mm Compare SEAS Excel E0015-08S W15CY001 SEAS Excel E0015-08S W15CY001 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 38 Hz
Total Q · Qts 0.36
Equivalent volume · Vas 14 L
DC resistance · Re 5.5 Ω
Electrical Q · Qes 0.43
Mechanical Q · Qms 2.22
Effective piston area · Sd 75 cm²
Moving mass · Mms —
Force factor · Bl 5.5 Tm
Voice-coil inductance · Le 0.49 mH
Sensitivity 85.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 4 mm
Excursion definition One-way; half of the datasheet’s 8 mm peak-to-peak linear coil travel.
Outer dimension (listed) 146 mm
Baffle cutout diameter 112 mm
Mounting depth 75.5 mm
Hifi Kit SKU E0015-08S T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
5 ″ 8 Ω 38 Hz 0.36 14 L 112 mm Compare SEAS Excel E0017-08S W18EX001 SEAS Excel E0017-08S W18EX001 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 34 Hz
Total Q · Qts 0.26
Equivalent volume · Vas 30 L
DC resistance · Re 6.1 Ω
Electrical Q · Qes 0.3
Mechanical Q · Qms 1.8
Effective piston area · Sd 126 cm²
Moving mass · Mms —
Force factor · Bl 8.4 Tm
Voice-coil inductance · Le 0.65 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 176 mm
Baffle cutout diameter 145.2 mm
Mounting depth 81 mm
Hifi Kit SKU E0017-08S T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
6.5 ″ 8 Ω 34 Hz 0.26 30 L 145.2 mm Compare SEAS Excel E0022-08S W22EX001 SEAS Excel E0022-08S W22EX001 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 8 Ω
Free-air resonance · Fs 25 Hz
Total Q · Qts 0.34
Equivalent volume · Vas 98 L
DC resistance · Re 6.1 Ω
Electrical Q · Qes 0.41
Mechanical Q · Qms 2.14
Effective piston area · Sd 220 cm²
Moving mass · Mms —
Force factor · Bl 8.1 Tm
Voice-coil inductance · Le 0.61 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 221.4 mm
Baffle cutout diameter 186.4 mm
Mounting depth 93 mm
Hifi Kit SKU E0022-08S T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
8 ″ 8 Ω 25 Hz 0.34 98 L 186.4 mm Compare SEAS Excel E0042-08S W18NX001 SEAS Excel E0042-08S W18NX001 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 40 Hz
Total Q · Qts 0.34
Equivalent volume · Vas 24 L
DC resistance · Re 6.3 Ω
Electrical Q · Qes 0.41
Mechanical Q · Qms 2.08
Effective piston area · Sd 126 cm²
Moving mass · Mms —
Force factor · Bl 7 Tm
Voice-coil inductance · Le 0.43 mH
Sensitivity 87.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 7 mm
Excursion definition One-way; half of the datasheet’s 14 mm peak-to-peak linear coil travel.
Outer dimension (listed) 176 mm
Baffle cutout diameter 121.5 mm
Mounting depth 81 mm
Hifi Kit SKU E0042-08S T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
6.5 ″ 8 Ω 40 Hz 0.34 24 L 121.5 mm Compare SEAS Excel E0049-04S W16NX001 SEAS Excel E0049-04S W16NX001 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 4 Ω
Free-air resonance · Fs 37 Hz
Total Q · Qts 0.33
Equivalent volume · Vas 15 L
DC resistance · Re 3 Ω
Electrical Q · Qes 0.38
Mechanical Q · Qms 2.66
Effective piston area · Sd 94 cm²
Moving mass · Mms —
Force factor · Bl 5.3 Tm
Voice-coil inductance · Le 0.25 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 7 mm
Excursion definition One-way; half of the datasheet’s 14 mm peak-to-peak linear coil travel.
Outer dimension (listed) 146 mm
Baffle cutout diameter 126 mm
Mounting depth 73.5 mm
Hifi Kit SKU E0049-04S T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
5 ″ 4 Ω 37 Hz 0.33 15 L 126 mm Compare SEAS Excel E0049-08S W16NX001 SEAS Excel E0049-08S W16NX001 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 39 Hz
Total Q · Qts 0.35
Equivalent volume · Vas 14 L
DC resistance · Re 6.2 Ω
Electrical Q · Qes 0.41
Mechanical Q · Qms 2.16
Effective piston area · Sd 94 cm²
Moving mass · Mms —
Force factor · Bl 7.3 Tm
Voice-coil inductance · Le 0.41 mH
Sensitivity 85 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 7 mm
Excursion definition One-way; half of the datasheet’s 14 mm peak-to-peak linear coil travel.
Outer dimension (listed) 146 mm
Baffle cutout diameter 126 mm
Mounting depth 73.5 mm
Hifi Kit SKU E0049-08S T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
5 ″ 8 Ω 39 Hz 0.35 14 L 126 mm Compare SEAS Extreme XM001-04S L26ROY SEAS Extreme XM001-04S L26ROY Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 4 Ω
Free-air resonance · Fs 25 Hz
Total Q · Qts 0.42
Equivalent volume · Vas 56 L
DC resistance · Re 3.3 Ω
Electrical Q · Qes 0.45
Mechanical Q · Qms 5.6
Effective piston area · Sd 342 cm²
Moving mass · Mms —
Force factor · Bl 12 Tm
Voice-coil inductance · Le 0.73 mH
Sensitivity 87 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 14 mm
Excursion definition One-way; half of the datasheet’s 28 mm peak-to-peak linear coil travel.
Outer dimension (listed) 269 mm
Baffle cutout diameter 236 mm
Mounting depth 142.3 mm
Hifi Kit SKU XM001-04S T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
10 ″ 4 Ω 25 Hz 0.42 56 L 236 mm Compare SEAS Extreme XM004-04S L26RO4Y SEAS Extreme XM004-04S L26RO4Y Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 4 Ω
Free-air resonance · Fs 26 Hz
Total Q · Qts 0.27
Equivalent volume · Vas 40 L
DC resistance · Re 3.5 Ω
Electrical Q · Qes 0.29
Mechanical Q · Qms 3.94
Effective piston area · Sd 342 cm²
Moving mass · Mms —
Force factor · Bl 17.7 Tm
Voice-coil inductance · Le 2.33 mH
Sensitivity 86 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 15 mm
Excursion definition One-way; half of the datasheet’s 30 mm peak-to-peak linear coil travel.
Outer dimension (listed) 269 mm
Baffle cutout diameter 236 mm
Mounting depth 142.3 mm
Hifi Kit SKU XM004-04S T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
10 ″ 4 Ω 26 Hz 0.27 40 L 236 mm Compare SEAS Prestige H1085-08 L18RCY/P SEAS Prestige H1085-08 L18RCY/P Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 33 Hz
Total Q · Qts 0.31
Equivalent volume · Vas 38 L
DC resistance · Re 5.6 Ω
Electrical Q · Qes 0.37
Mechanical Q · Qms 2.01
Effective piston area · Sd 125 cm²
Moving mass · Mms —
Force factor · Bl 6.5 Tm
Voice-coil inductance · Le 0.92 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 4 mm
Excursion definition One-way; half of the datasheet’s 8 mm peak-to-peak linear coil travel.
Outer dimension (listed) 176 mm
Baffle cutout diameter 145 mm
Mounting depth 73 mm
Hifi Kit SKU 1484 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
6.5 ″ 8 Ω 33 Hz 0.31 38 L 145 mm Compare SEAS Prestige H1152-08 CA12RCY SEAS Prestige H1152-08 CA12RCY Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 4.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 57 Hz
Total Q · Qts 0.31
Equivalent volume · Vas 5 L
DC resistance · Re 6.4 Ω
Electrical Q · Qes 0.36
Mechanical Q · Qms 2.17
Effective piston area · Sd 55 cm²
Moving mass · Mms —
Force factor · Bl 6.35 Tm
Voice-coil inductance · Le 1.05 mH
Sensitivity 86 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 3 mm
Excursion definition One-way; half of the datasheet’s 6 mm peak-to-peak linear coil travel.
Outer dimension (listed) 120.4 mm
Baffle cutout diameter 95.8 mm
Mounting depth 58.5 mm
Hifi Kit SKU H1152-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
4.5 ″ 8 Ω 57 Hz 0.31 5 L 95.8 mm Compare SEAS Prestige H1215-08 CA18RNX SEAS Prestige H1215-08 CA18RNX Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 35 Hz
Total Q · Qts 0.31
Equivalent volume · Vas 33 L
DC resistance · Re 5.8 Ω
Electrical Q · Qes 0.37
Mechanical Q · Qms 1.9
Effective piston area · Sd 136 cm²
Moving mass · Mms —
Force factor · Bl 7.2 Tm
Voice-coil inductance · Le 1.2 mH
Sensitivity 88.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6 mm
Excursion definition One-way; half of the datasheet’s 12 mm peak-to-peak linear coil travel.
Outer dimension (listed) 176 mm
Baffle cutout diameter 145.2 mm
Mounting depth 78 mm
Hifi Kit SKU H1215-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
6.5 ″ 8 Ω 35 Hz 0.31 33 L 145.2 mm Compare SEAS Prestige H1216-08 CA15RLY SEAS Prestige H1216-08 CA15RLY Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 44 Hz
Total Q · Qts 0.34
Equivalent volume · Vas 14 L
DC resistance · Re 5.6 Ω
Electrical Q · Qes 0.42
Mechanical Q · Qms 1.88
Effective piston area · Sd 80 cm²
Moving mass · Mms —
Force factor · Bl 5.5 Tm
Voice-coil inductance · Le 0.82 mH
Sensitivity 87.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 146 mm
Baffle cutout diameter 112 mm
Mounting depth 67.5 mm
Hifi Kit SKU H1216-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
5 ″ 8 Ω 44 Hz 0.34 14 L 112 mm Compare SEAS Prestige H1217-08 CA18RLY SEAS Prestige H1217-08 CA18RLY Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 42 Hz
Total Q · Qts 0.47
Equivalent volume · Vas 32 L
DC resistance · Re 5.8 Ω
Electrical Q · Qes 0.56
Mechanical Q · Qms 2.92
Effective piston area · Sd 136 cm²
Moving mass · Mms —
Force factor · Bl 5.6 Tm
Voice-coil inductance · Le 1.05 mH
Sensitivity 90 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 176 mm
Baffle cutout diameter 145.2 mm
Mounting depth 73 mm
Hifi Kit SKU H1217-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
6.5 ″ 8 Ω 42 Hz 0.47 32 L 145.2 mm Compare SEAS Prestige H1288-08 CA22RNX SEAS Prestige H1288-08 CA22RNX Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 8 Ω
Free-air resonance · Fs 29 Hz
Total Q · Qts 0.41
Equivalent volume · Vas 97 L
DC resistance · Re 6.1 Ω
Electrical Q · Qes 0.52
Mechanical Q · Qms 2.04
Effective piston area · Sd 230 cm²
Moving mass · Mms —
Force factor · Bl 7 Tm
Voice-coil inductance · Le 1 mH
Sensitivity 89.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6 mm
Excursion definition One-way; half of the datasheet’s 12 mm peak-to-peak linear coil travel.
Outer dimension (listed) 220.6 mm
Baffle cutout diameter 186.4 mm
Mounting depth 90 mm
Hifi Kit SKU H1288-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
8 ″ 8 Ω 29 Hz 0.41 97 L 186.4 mm Compare SEAS Prestige H1305-08 CA26RFX SEAS Prestige H1305-08 CA26RFX Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 8 Ω
Free-air resonance · Fs 29 Hz
Total Q · Qts 0.34
Equivalent volume · Vas 129 L
DC resistance · Re 6.3 Ω
Electrical Q · Qes 0.4
Mechanical Q · Qms 2.14
Effective piston area · Sd 350 cm²
Moving mass · Mms —
Force factor · Bl 10.7 Tm
Voice-coil inductance · Le 1.95 mH
Sensitivity 90.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 7 mm
Excursion definition One-way; half of the datasheet’s 14 mm peak-to-peak linear coil travel.
Outer dimension (listed) 269 mm
Baffle cutout diameter 232.2 mm
Mounting depth 107.5 mm
Hifi Kit SKU H1305-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
10 ″ 8 Ω 29 Hz 0.34 129 L 232.2 mm Compare SEAS Prestige H1411-08 A26RE4 SEAS Prestige H1411-08 A26RE4 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 8 Ω
Free-air resonance · Fs 25 Hz
Total Q · Qts 0.39
Equivalent volume · Vas 169 L
DC resistance · Re 6.3 Ω
Electrical Q · Qes 0.43
Mechanical Q · Qms 3.84
Effective piston area · Sd 350 cm²
Moving mass · Mms —
Force factor · Bl 9.7 Tm
Voice-coil inductance · Le 3.8 mH
Sensitivity 89 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 4 mm
Excursion definition One-way; half of the datasheet’s 8 mm peak-to-peak linear coil travel.
Outer dimension (listed) 269 mm
Baffle cutout diameter 232.2 mm
Mounting depth 100.5 mm
Hifi Kit SKU H1411-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
10 ″ 8 Ω 25 Hz 0.39 169 L 232.2 mm Compare SEAS Prestige H1455-08 ER15RLY SEAS Prestige H1455-08 ER15RLY Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 44 Hz
Total Q · Qts 0.32
Equivalent volume · Vas 15 L
DC resistance · Re 5.6 Ω
Electrical Q · Qes 0.41
Mechanical Q · Qms 1.55
Effective piston area · Sd 80 cm²
Moving mass · Mms —
Force factor · Bl 5.5 Tm
Voice-coil inductance · Le 0.73 mH
Sensitivity 87.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way; half of the datasheet’s 10 mm peak-to-peak linear coil travel.
Outer dimension (listed) 146 mm
Baffle cutout diameter 112 mm
Mounting depth 67.5 mm
Hifi Kit SKU H1455-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
5 ″ 8 Ω 44 Hz 0.32 15 L 112 mm Compare SEAS Prestige H1456-08 ER18RNX SEAS Prestige H1456-08 ER18RNX Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 37 Hz
Total Q · Qts 0.32
Equivalent volume · Vas 32 L
DC resistance · Re 5.9 Ω
Electrical Q · Qes 0.39
Mechanical Q · Qms 1.58
Effective piston area · Sd 136 cm²
Moving mass · Mms —
Force factor · Bl 7.2 Tm
Voice-coil inductance · Le 0.67 mH
Sensitivity 88.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6 mm
Excursion definition One-way; half of the datasheet’s 12 mm peak-to-peak linear coil travel.
Outer dimension (listed) 176 mm
Baffle cutout diameter 145 mm
Mounting depth 78 mm
Hifi Kit SKU H1456-08 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Jul 2007-1
6.5 ″ 8 Ω 37 Hz 0.32 32 L 145 mm Compare Scan-Speak Classic 18W/8535-01 Scan-Speak Classic 18W/8535-01 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 25 Hz
Total Q · Qts 0.38
Equivalent volume · Vas 68.9 L
DC resistance · Re 5.85 Ω
Electrical Q · Qes 0.46
Mechanical Q · Qms 2.1
Effective piston area · Sd 145 cm²
Moving mass · Mms 17.2 g
Force factor · Bl 5.9 Tm
Voice-coil inductance · Le 0.33 mH
Sensitivity 87.2 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 177 mm
Baffle cutout diameter 158 mm
Mounting depth —
Hifi Kit SKU 18W/8535-01 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: December 20, 2012.
6.5 ″ 8 Ω 25 Hz 0.38 68.9 L 158 mm Compare Scan-Speak Classic 18W/8545-01 Scan-Speak Classic 18W/8545-01 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 in
Nominal impedance 8 Ω
Free-air resonance · Fs 25 Hz
Total Q · Qts 0.2
Equivalent volume · Vas 68.6 L
DC resistance · Re 5.7 Ω
Electrical Q · Qes 0.22
Mechanical Q · Qms 1.55
Effective piston area · Sd 145 cm²
Moving mass · Mms 18 g
Force factor · Bl 8.4 Tm
Voice-coil inductance · Le 0.39 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6.5 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 177 mm
Baffle cutout diameter 158 mm
Mounting depth —
Hifi Kit SKU 18W/8545-01 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: January 4, 2012.
6.5 ″ 8 Ω 25 Hz 0.2 68.6 L 158 mm Compare Scan-Speak Classic 21W/8555-10 Scan-Speak Classic 21W/8555-10 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 8 Ω
Free-air resonance · Fs 20 Hz
Total Q · Qts 0.31
Equivalent volume · Vas 134 L
DC resistance · Re 5.5 Ω
Electrical Q · Qes 0.33
Mechanical Q · Qms 4.5
Effective piston area · Sd 220 cm²
Moving mass · Mms 32 g
Force factor · Bl 8.2 Tm
Voice-coil inductance · Le 0.4 mH
Sensitivity 87 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6.5 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 214 mm
Baffle cutout diameter 194 mm
Mounting depth —
Hifi Kit SKU 21W/8555-10 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: January 22, 2016.
8 ″ 8 Ω 20 Hz 0.31 134 L 194 mm Compare Scan-Speak Classic 25W/8565-00 Scan-Speak Classic 25W/8565-00 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 8 Ω
Free-air resonance · Fs 20 Hz
Total Q · Qts 0.41
Equivalent volume · Vas 225 L
DC resistance · Re 5.5 Ω
Electrical Q · Qes 0.44
Mechanical Q · Qms 5.4
Effective piston area · Sd 330 cm²
Moving mass · Mms 43 g
Force factor · Bl 8.2 Tm
Voice-coil inductance · Le 0.4 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6.5 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 255 mm
Baffle cutout diameter 227 mm
Mounting depth —
Hifi Kit SKU 25W/8565-00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
10 ″ 8 Ω 20 Hz 0.41 225 L 227 mm Compare Scan-Speak Discovery 12W/4524G00 Scan-Speak Discovery 12W/4524G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 4 in
Nominal impedance 4 Ω
Free-air resonance · Fs 50 Hz
Total Q · Qts 0.27
Equivalent volume · Vas 8.2 L
DC resistance · Re 3.1 Ω
Electrical Q · Qes 0.3
Mechanical Q · Qms 3.35
Effective piston area · Sd 59 cm²
Moving mass · Mms 6.1 g
Force factor · Bl 4.4 Tm
Voice-coil inductance · Le 0.4 mH
Sensitivity 88.8 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 3 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 124.7 mm
Baffle cutout diameter 100 mm
Mounting depth —
Hifi Kit SKU 12W/4524G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
4 ″ 4 Ω 50 Hz 0.27 8.2 L 100 mm Compare Scan-Speak Discovery 12W/8524G00 Scan-Speak Discovery 12W/8524G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 4 in
Nominal impedance 8 Ω
Free-air resonance · Fs 52 Hz
Total Q · Qts 0.32
Equivalent volume · Vas 8.2 L
DC resistance · Re 5.7 Ω
Electrical Q · Qes 0.35
Mechanical Q · Qms 3.42
Effective piston area · Sd 59 cm²
Moving mass · Mms 5.6 g
Force factor · Bl 5.4 Tm
Voice-coil inductance · Le 0.6 mH
Sensitivity 85.8 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 3 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 124.7 mm
Baffle cutout diameter 100 mm
Mounting depth —
Hifi Kit SKU 12W/8524G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
4 ″ 8 Ω 52 Hz 0.32 8.2 L 100 mm Compare Scan-Speak Discovery 15W/4424G00 Scan-Speak Discovery 15W/4424G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5.25 in
Nominal impedance 4 Ω
Free-air resonance · Fs 44 Hz
Total Q · Qts 0.21
Equivalent volume · Vas 14.5 L
DC resistance · Re 2.9 Ω
Electrical Q · Qes 0.22
Mechanical Q · Qms 3.73
Effective piston area · Sd 80 cm²
Moving mass · Mms 8.1 g
Force factor · Bl 5.4 Tm
Voice-coil inductance · Le 0.4 mH
Sensitivity 90.6 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 2.8 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 149 mm
Baffle cutout diameter 114 mm
Mounting depth —
Hifi Kit SKU 15W/4424G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 21, 2011.
5.25 ″ 4 Ω 44 Hz 0.21 14.5 L 114 mm Compare Scan-Speak Discovery 15W/8424G00 Scan-Speak Discovery 15W/8424G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 5.25 in
Nominal impedance 8 Ω
Free-air resonance · Fs 46 Hz
Total Q · Qts 0.25
Equivalent volume · Vas 14.5 L
DC resistance · Re 5.5 Ω
Electrical Q · Qes 0.27
Mechanical Q · Qms 3.6
Effective piston area · Sd 80 cm²
Moving mass · Mms 7.54 g
Force factor · Bl 6.6 Tm
Voice-coil inductance · Le 0.5 mH
Sensitivity 87.7 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 2.6 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 149 mm
Baffle cutout diameter 114 mm
Mounting depth —
Hifi Kit SKU 15W/8424G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
5.25 ″ 8 Ω 46 Hz 0.25 14.5 L 114 mm Compare Scan-Speak Discovery 18W/4424G00 Scan-Speak Discovery 18W/4424G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 / 7 in
Nominal impedance 4 Ω
Free-air resonance · Fs 49 Hz
Total Q · Qts 0.38
Equivalent volume · Vas 24.1 L
DC resistance · Re 3.2 Ω
Electrical Q · Qes 0.42
Mechanical Q · Qms 4.57
Effective piston area · Sd 137 cm²
Moving mass · Mms 11.4 g
Force factor · Bl 5.2 Tm
Voice-coil inductance · Le 0.47 mH
Sensitivity 90.9 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 2.8 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 179.6 mm
Baffle cutout diameter 144.3 mm
Mounting depth —
Hifi Kit SKU 18W/4424G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
6.5 / 7 ″ 4 Ω 49 Hz 0.38 24.1 L 144.3 mm Compare Scan-Speak Discovery 18W/4434G00 Scan-Speak Discovery 18W/4434G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 / 7 in
Nominal impedance 4 Ω
Free-air resonance · Fs 47 Hz
Total Q · Qts 0.35
Equivalent volume · Vas 20.7 L
DC resistance · Re 3 Ω
Electrical Q · Qes 0.37
Mechanical Q · Qms 7.81
Effective piston area · Sd 137 cm²
Moving mass · Mms 14.41 g
Force factor · Bl 6 Tm
Voice-coil inductance · Le 0.39 mH
Sensitivity 91.3 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 4.3 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 179.6 mm
Baffle cutout diameter 144.3 mm
Mounting depth —
Hifi Kit SKU 18W/4434G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
6.5 / 7 ″ 4 Ω 47 Hz 0.35 20.7 L 144.3 mm Compare Scan-Speak Discovery 18W/8424G00 Scan-Speak Discovery 18W/8424G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 / 7 in
Nominal impedance 8 Ω
Free-air resonance · Fs 54 Hz
Total Q · Qts 0.45
Equivalent volume · Vas 20.3 L
DC resistance · Re 5.7 Ω
Electrical Q · Qes 0.51
Mechanical Q · Qms 4.04
Effective piston area · Sd 137 cm²
Moving mass · Mms 11.3 g
Force factor · Bl 6.6 Tm
Voice-coil inductance · Le 0.69 mH
Sensitivity 89.4 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 2.6 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 179.6 mm
Baffle cutout diameter 144.3 mm
Mounting depth —
Hifi Kit SKU 18W/8424G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
6.5 / 7 ″ 8 Ω 54 Hz 0.45 20.3 L 144.3 mm Compare Scan-Speak Discovery 18W/8434G00 Scan-Speak Discovery 18W/8434G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 6.5 / 7 in
Nominal impedance 8 Ω
Free-air resonance · Fs 50 Hz
Total Q · Qts 0.43
Equivalent volume · Vas 19.5 L
DC resistance · Re 5.6 Ω
Electrical Q · Qes 0.46
Mechanical Q · Qms 7.58
Effective piston area · Sd 137 cm²
Moving mass · Mms 13.7 g
Force factor · Bl 7.2 Tm
Voice-coil inductance · Le 0.55 mH
Sensitivity 88.7 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 4.2 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 179.6 mm
Baffle cutout diameter 144.3 mm
Mounting depth —
Hifi Kit SKU 18W/8434G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
6.5 / 7 ″ 8 Ω 50 Hz 0.43 19.5 L 144.3 mm Compare Scan-Speak Discovery 22W/4534G00 Scan-Speak Discovery 22W/4534G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 4 Ω
Free-air resonance · Fs 30 Hz
Total Q · Qts 0.34
Equivalent volume · Vas 95 L
DC resistance · Re 3 Ω
Electrical Q · Qes 0.37
Mechanical Q · Qms 3.7
Effective piston area · Sd 235 cm²
Moving mass · Mms 23.7 g
Force factor · Bl 6 Tm
Voice-coil inductance · Le 0.33 mH
Sensitivity 92.4 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5.7 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 225 mm
Baffle cutout diameter 185 mm
Mounting depth —
Hifi Kit SKU 22W/4534G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
8 ″ 4 Ω 30 Hz 0.34 95 L 185 mm Compare Scan-Speak Discovery 22W/8534G00 Scan-Speak Discovery 22W/8534G00 Specifications & sources
Type Midwoofer
Nominal size (Hifi Kit) 8 in
Nominal impedance 8 Ω
Free-air resonance · Fs 30 Hz
Total Q · Qts 0.39
Equivalent volume · Vas 94.2 L
DC resistance · Re 5.9 Ω
Electrical Q · Qes 0.43
Mechanical Q · Qms 4.14
Effective piston area · Sd 235 cm²
Moving mass · Mms 23.1 g
Force factor · Bl 7.8 Tm
Voice-coil inductance · Le 0.56 mH
Sensitivity 88.8 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 5.8 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 225 mm
Baffle cutout diameter 185 mm
Mounting depth —
Hifi Kit SKU 22W/8534G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: January 30, 2013.
8 ″ 8 Ω 30 Hz 0.39 94.2 L 185 mm Compare Scan-Speak Discovery 26W/4534G00 Scan-Speak Discovery 26W/4534G00 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 4 Ω
Free-air resonance · Fs 23 Hz
Total Q · Qts 0.36
Equivalent volume · Vas 156 L
DC resistance · Re 3.8 Ω
Electrical Q · Qes 0.37
Mechanical Q · Qms 9.57
Effective piston area · Sd 350 cm²
Moving mass · Mms 52 g
Force factor · Bl 8.8 Tm
Voice-coil inductance · Le 0.7 mH
Sensitivity 90.5 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 272 mm
Baffle cutout diameter —
Mounting depth —
Hifi Kit SKU 26W/4534G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Some product-page values differ. This entry uses the linked manufacturer datasheet for T/S parameters and sensitivity.
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: April 14, 2011
10 ″ 4 Ω 23 Hz 0.36 156 L — Compare Scan-Speak Discovery 26W/4558T00 Scan-Speak Discovery 26W/4558T00 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 4 Ω
Free-air resonance · Fs 21 Hz
Total Q · Qts 0.31
Equivalent volume · Vas 94.9 L
DC resistance · Re 2.6 Ω
Electrical Q · Qes 0.33
Mechanical Q · Qms 5.56
Effective piston area · Sd 352 cm²
Moving mass · Mms 105 g
Force factor · Bl 10.5 Tm
Voice-coil inductance · Le 0.83 mH
Sensitivity 88 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 12.5 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 270 mm
Baffle cutout diameter 240 mm
Mounting depth —
Hifi Kit SKU 26W/4558T00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
10 ″ 4 Ω 21 Hz 0.31 94.9 L 240 mm Compare Scan-Speak Discovery 26W/8534G00 Scan-Speak Discovery 26W/8534G00 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 10 in
Nominal impedance 8 Ω
Free-air resonance · Fs 23 Hz
Total Q · Qts 0.4
Equivalent volume · Vas 150 L
DC resistance · Re 5.7 Ω
Electrical Q · Qes 0.42
Mechanical Q · Qms 9.12
Effective piston area · Sd 350 cm²
Moving mass · Mms 50.5 g
Force factor · Bl 10.1 Tm
Voice-coil inductance · Le 0.96 mH
Sensitivity 89 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 6 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 272 mm
Baffle cutout diameter 231 mm
Mounting depth —
Hifi Kit SKU 26W/8534G00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: May 5, 2011
10 ″ 8 Ω 23 Hz 0.4 150 L 231 mm Compare Scan-Speak Discovery 30W/4558T00 Scan-Speak Discovery 30W/4558T00 Specifications & sources
Type Woofer
Nominal size (Hifi Kit) 12 in
Nominal impedance 4 Ω
Free-air resonance · Fs 17 Hz
Total Q · Qts 0.32
Equivalent volume · Vas 197 L
DC resistance · Re 2.6 Ω
Electrical Q · Qes 0.34
Mechanical Q · Qms 5.01
Effective piston area · Sd 466 cm²
Moving mass · Mms 135 g
Force factor · Bl 10.5 Tm
Voice-coil inductance · Le 0.83 mH
Sensitivity 89 dB
Sensitivity conditions 2.83 V / 1 m
Linear excursion · Xmax 12.5 mm
Excursion definition One-way (±); manufacturer’s stated linear excursion.
Outer dimension (listed) 308 mm
Baffle cutout diameter 280 mm
Mounting depth —
Hifi Kit SKU 30W/4558T00 T/S data checked against manufacturer datasheet · 2026-09-08. Product specifications · Manufacturer datasheet ↗
Size, outer dimension and cutout: Hifi Kit product specifications. Mounting depth: manufacturer drawing, behind the mounting face; additional ventilation clearance is not included.
Datasheet updated: February 22, 2011.
12 ″ 4 Ω 17 Hz 0.32 197 L 280 mm 
