Media
Auto-advancing
Size
12"
Impedance
4Ω
RMS Power
800W
Sensitivity
100dB
EBP
250
Vented alignment
Vd
313cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs50Hz
Qts0.19
Qes0.20
Qms3.3
Vas70.0L
Re3.1Ω
Le0.72mH
BL16.5Tm
Sd522cm²
Mms54g
Xmax6.0mm
SPL100dB
Power800W
Power Nominal400W
Impedance4Ω
Min Impedance4.3Ω
F Low50Hz
F High2000Hz
Voice Coil76mm
Flux Density1.25T
Pricing & availability
Price movement
Other offers
4 vendorsbluearan
Updated 17 May 2026· 4Ω
Source: inc VAT · 20%
£159.00
inc VAT
thomann
Updated 28 Apr 2026
Source: inc VAT · 20%
£166.00
inc VAT
jpleisure
Updated 17 May 2026· 4Ω
Source: ex VAT · 20%
£166.33
inc VAT
jpleisure
Updated 17 May 2026· 4Ω
Source: ex VAT · 20%
£167.21
inc VAT
Best current price
Updated 17 May 2026
bluearan
£159.00
Avg £163.51£4.51 below avg (-2.8%)
inc VAT
Dimensions & Physical
Weight3.9kg
Diameter315.0mm
Overall Depth141.0mm
Cutout Diameter283.0mm
Bolt Circle Diameter298.0mm
Additional Manufacturer Specs
Bl16.5 Tm
Fs50 Hz
Le0.72 mH
Re3.1 Ω
Sd522 cm² (80.91 in²)
Ebp250 Hz
Mms54 g
Qes0.2
Qms3.25
Qts0.19
Vas70 dm³ (2.47 ft³)
η04.57 %
ConeRCK12NDL764
Xmax6 mm
Xvar7 mm
SpiderSingle
Cone ShapeExponential
Pole DesignStraight Pole
Winding Depth18.5 mm (0.73 in)
Surround ShapeDouble Roll
Former MaterialGlass Fibre
Magnet MaterialNeodymium Inside Slug
Nominal Diameter320 mm (12 in)
Winding MaterialAluminium
Magnetic Gap Depth10 mm (0.39 in)
Bolt Circle Diameter298 mm (11.73 in)
Woofer Cone TreatmentNone
Baffle Cutout Diameter283 mm (11.14 in)
Flange And Gasket Thickness14 mm (0.55 in)
Air Volume Occupied By Driver2.5 dm³ (0.09 ft³)
Similar Drivers
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Reference
B&C
12NDL76
12"
Best current price
£159.00
Compare on
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5 active T/S params, plus size.
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