Media
Auto-advancing
Size
18"
Impedance
4Ω
RMS Power
2400W
Sensitivity
96dB
EBP
90
Either alignment
Vd
1210cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs35Hz
Qts0.37
Qes0.39
Qms7.0
Vas192.0L
Re3.6Ω
Le1.74mH
BL22.0Tm
Sd1210cm²
Mms225g
Xmax10.0mm
SPL96dB
Power2400W
Power Nominal1200W
Impedance4Ω
Min Impedance4.4Ω
F Low35Hz
F High1000Hz
Voice Coil100mm
Flux Density1.10T
Pricing & availability
Price movement
Other offers
1 vendorjpleisure
Updated 17 May 2026· 4Ω
Source: ex VAT · 20%
£275.46
inc VAT
Best current price
Updated 17 May 2026
bluearan
£259.00
Avg £267.23£8.23 below avg (-3.1%)
inc VAT
Dimensions & Physical
Weight9.1kg
Diameter460.0mm
Overall Depth208.0mm
Cutout Diameter422.0mm
Bolt Circle Diameter440.0mm
Additional Manufacturer Specs
Bl22 Tm
Fs35 Hz
Le1.74 mH
Re3.6 Ω
Sd1210 cm² (187.55 in²)
Ebp90 Hz
Mms225 g
Qes0.39
Qms7
Qts0.37
Vas192 dm³ (6.78 ft³)
η02.02 %
ConeRCK18NBX1004
Xmax10 mm
Xvar12 mm
SpiderDouble Silicone
Cone ShapeRadial
Pole DesignT-Pole
Winding Depth25 mm (1 in)
Surround ShapeTriple Roll
Former MaterialGlass Fibre
Magnet MaterialNeodymium Inside Slug
Nominal Diameter460 mm (18 in)
Winding MaterialCopper
Magnetic Gap Depth11 mm (0.43 in)
Recommended Tuning35 Hz
Bolt Circle Diameter440 mm (17.3 in)
Recommended Enclosure200 dm³ (7.1 ft³)
Woofer Cone TreatmentTWP Waterproof Both Sides
Baffle Cutout Diameter422 mm (16.6 in)
Flange And Gasket Thickness14 mm (0.55 in)
Air Volume Occupied By Driver8.5 dm³ (0.3 ft³)
Similar Drivers
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Reference
B&C
18NBX100
18"
Best current price
£259.00
Compare on
Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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