Media
Auto-advancing
Size
6.5"
Impedance
4Ω
RMS Power
300W
Sensitivity
91dB
EBP
173
Vented alignment
Vd
79cm³
Frequency response
Manufacturer-provided response plots and related charts.
T/S Parameters
Valid
Fs69Hz
Qts0.39
Qes0.40
Qms10.1
Vas7.1L
Re3.1Ω
Le0.40mH
BL7.8Tm
Sd132cm²
Mms18g
Xmax6.0mm
SPL91dB
Power300W
Power Nominal150W
Impedance4Ω
Min Impedance3.5Ω
F Low70Hz
F High5000Hz
Voice Coil38mm
Flux Density1.15T
Pricing & availability
Price movement
Other offers
1 vendorjpleisure
Updated 17 May 2026· 4Ω
Source: ex VAT · 20%
£100.79
inc VAT
Best current price
Updated 17 May 2026
bluearan
£95.00
Avg £97.89£2.89 below avg (-3.0%)
inc VAT
Dimensions & Physical
Weight1.2kg
Diameter187.0mm
Overall Depth85.0mm
Cutout Diameter145.0mm
Bolt Circle Diameter172.0mm
Additional Manufacturer Specs
Bl7.8 Tm
Fs69 Hz
Le0.4 mH
Re3.1 Ω
Sd132 cm² (20.5 in²)
Ebp173 Hz
Mms18 g
Qes0.4
Qms10.05
Qts0.39
Vas7.1 dm³ (0.25 ft³)
η00.55 %
ConeRCK06NDL384
Xmax6 mm
Xvar5.5 mm
SpiderSingle
Cone ShapeExponential
Pole DesignT-Pole
Winding Depth12 mm (0.5 in)
Surround ShapeRoll
Former MaterialKapton
Magnet MaterialNeodymium Ring
Nominal Diameter170 mm (6.5 in)
Winding MaterialCopper
Magnetic Gap Depth6 mm (0.25 in)
Recommended Tuning62 Hz
Bolt Circle Diameter172 mm (6.7 in)
Recommended Enclosure9 dm³ (0.32 ft³)
Woofer Cone TreatmentWP Waterproof Front Side
Baffle Cutout Diameter145 mm (5.7 in)
Flange And Gasket Thickness11 mm (0.4 in)
Air Volume Occupied By Driver0.63 dm³ (0.02 ft³)
Similar Drivers
Keep size fixed, then add or remove T/S params to change the ranking and the comparison rows.
Reference
B&C
6NDL38
6.5"
Best current price
£95.00
Compare on
Only active params are shown here. Size stays fixed automatically.
5 active T/S params, plus size.
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