Media
Auto-advancing
Size
12"
Impedance
4Ω
RMS Power
2000W
Sensitivity
93dB
EBP
183
Vented alignment
Vd
478cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs44Hz
Qts0.23
Qes0.24
Qms6.2
Vas41.1L
Re3.6Ω
Le1.74mH
BL22.9Tm
Sd531cm²
Mms125g
Xmax9.0mm
SPL93dB
Power2000W
Power Nominal1000W
Impedance4Ω
Min Impedance4.6Ω
F Low45Hz
F High1500Hz
Voice Coil100mm
Flux Density1.10T
Pricing & availability
Price movement
Other offers
2 vendorsjpleisure
Updated 17 May 2026· 4Ω
Source: ex VAT · 20%
£212.05
inc VAT
thomann
Updated 28 Apr 2026
Source: inc VAT · 20%
£215.00
inc VAT
Best current price
Updated 17 May 2026
bluearan
£208.99
Avg £212.01£3.02 below avg (-1.4%)
inc VAT
Dimensions & Physical
Weight11.8kg
Diameter319.0mm
Overall Depth135.0mm
Cutout Diameter281.0mm
Bolt Circle Diameter299.0mm
Additional Manufacturer Specs
Bl22.91 Tm
Fs44 Hz
Le1.74 mH
Re3.6 Ω
Sd531 cm² (82.3 in²)
Ebp183 Hz
Mms125 g
Qes0.24
Qms6.23
Qts0.23
Vas41.1 dm³ (1.45 ft³)
η01.42 %
ConeRCK12TBX1004
Xmax9 mm
Xvar11 mm
SpiderDouble Silicone
Cone ShapeRadial
Pole DesignT-Pole
Winding Depth25 mm (1 in)
Surround ShapeTriple Roll
Former MaterialGlass Fibre
Magnet MaterialFerrite
Nominal Diameter320 mm (12 in)
Winding MaterialCopper
Magnetic Gap Depth12 mm (0.5 in)
Recommended Tuning43 Hz
Bolt Circle Diameter299 mm (11.8 in)
Recommended Enclosure40 dm³ (1.41 ft³)
Woofer Cone TreatmentTWP Waterproof Both Sides
Baffle Cutout Diameter281 mm (11.1 in)
Flange And Gasket Thickness13 mm (0.5 in)
Air Volume Occupied By Driver4.2 dm³ (0.15 ft³)
Similar Drivers
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Reference
B&C
12TBX100
12"
Best current price
£208.99
Compare on
Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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