Media
Auto-advancing
Size
18"
Impedance
4Ω
RMS Power
2400W
Sensitivity
94dB
EBP
91
Either alignment
Vd
1089cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs30Hz
Qts0.31
Qes0.33
Qms7.0
Vas256.0L
Re3.7Ω
Le1.73mH
BL22.0Tm
Sd1210cm²
Mms230g
Xmax9.0mm
SPL94dB
Power2400W
Power Nominal1200W
Impedance4Ω
Min Impedance4.4Ω
F Low35Hz
F High1000Hz
Voice Coil100mm
Flux Density1.10T
Pricing & availability
Price movement
Other offers
1 vendorbluearan
Updated 17 May 2026· 4Ω
Source: inc VAT · 20%
£245.00
inc VAT
Best current price
Updated 17 May 2026
jpleisure
£236.71
Avg £240.86£4.14 below avg (-1.7%)
inc VAT
Dimensions & Physical
Weight12.7kg
Diameter460.0mm
Overall Depth209.0mm
Cutout Diameter422.0mm
Bolt Circle Diameter440.0mm
Additional Manufacturer Specs
Bl22 Tm
Fs30 Hz
Le1.73 mH
Re3.7 Ω
Sd1210 cm² (187.6 in²)
Ebp91 Hz
Mms230 g
Qes0.33
Qms7
Qts0.31
Vas256 dm³ (9.04 ft³)
η01.96 %
ConeRCK18TBX1004
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 Diameter460 mm (18 in)
Winding MaterialCopper
Magnetic Gap Depth12 mm (0.5 in)
Recommended Tuning34 Hz
Bolt Circle Diameter440 mm (17.3 in)
Recommended Enclosure200 dm³ (7.06 ft³)
Woofer Cone TreatmentTWP Waterproof Both Sides
Baffle Cutout Diameter422 mm (16.6 in)
Flange And Gasket Thickness16 mm (0.63 in)
Air Volume Occupied By Driver10.5 dm³ (0.37 ft³)
Similar Drivers
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Reference
B&C
18TBX100
18"
Best current price
£236.71
Compare on
Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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