Media
Auto-advancing
Size
8"
Impedance
4Ω
RMS Power
400W
Sensitivity
94dB
EBP
117
Vented alignment
Vd
154cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs75Hz
Qts0.57
Qes0.64
Qms5.2
Vas10.1L
Re2.6Ω
Le0.15mH
BL7.3Tm
Sd220cm²
Mms27g
Xmax7.0mm
SPL94dB
Power400W
Power Nominal200W
Impedance4Ω
Min Impedance3.0Ω
F Low75Hz
F High3000Hz
Voice Coil51mm
Flux Density1.05T
Pricing & availability
Price movement
Best current price
Updated 17 May 2026
thomann
£104.00
inc VAT
Dimensions & Physical
Weight1.9kg
Diameter225.0mm
Overall Depth90.0mm
Cutout Diameter187.0mm
Bolt Circle Diameter210.0mm
Additional Manufacturer Specs
Bl7.3 Tm
Fs75 Hz
Le0.15 mH
Re2.6 Ω
Sd220 cm² (34.1 in²)
Ebp117 Hz
Mms27 g
Qes0.64
Qms5.22
Qts0.57
Vas10.1 dm³ (0.36 ft³)
η00.73 %
ConeRCK008NDL514
Xmax7 mm
Xvar7 mm
SpiderSingle
Cone ShapeExponential
Pole DesignStraight Pole
Winding Depth16 mm (0.63 in)
Surround ShapeDouble Roll
Former MaterialGlass Fibre
Magnet MaterialNeodymium Inside Slug
Nominal Diameter200 mm (8 in)
Winding MaterialCopper
Magnetic Gap Depth8 mm (0.31 in)
Recommended Tuning65 Hz
Bolt Circle Diameter210 mm (8.3 in)
Recommended Enclosure14 dm³ (0.49 ft³)
Woofer Cone TreatmentTWP Waterproof Both Sides
Baffle Cutout Diameter187 mm (7.4 in)
Flange And Gasket Thickness11 mm (0.4 in)
Air Volume Occupied By Driver1.1 dm³ (0.04 ft³)
Similar Drivers
Keep size fixed, then add or remove T/S params to change the ranking and the comparison rows.
Reference
B&C
8NDL51
8"
Best current price
£104.00
Compare on
Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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