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Bass / Mid Range Driver
  • Discontinued – Special Order / OEM Only
  • Contact for order information
  • A perfect choice for full range high power applications in compact cabinets
  • Excels in compact sound systems
  • Ideal for low profile cabinets with excellent low frequency response
  • Lightweight neodymium magnet


8" / 200 mm

Coil Diameter

2.0" / 51 mm

Power Rating

150 w (A.E.S.)

Frequency Range

70 Hz - 5 kHz


95 dB


4 mm
SKU: PDN.8BM31.8 Category:

Sorry, this product is out of manufacture and no longer available.

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General Specifications
Type Bass / Mid Range Driver
Available Impedance 4 Ω/ 8 Ω/ 16 Ω
Nominal Diameter 8" / 200 mm
Voice Coil Diameter 2.0" / 51 mm
Peak Power (6 dB Crest Factor) * 600 w (A.E.S.)
Power Rating 1 2 * 150 w (A.E.S.)
Sensitivity (1W/ 1m) * 95 dB
Frequency Range 70 Hz - 5 kHz
Resonance 79.34 Hz
Voice Coil Winding Depth 11.5 mm / 0.45"
Recommended Enclosure Volume 5 - 20 Litres
Flux Density 1.43 Tesla
Magnet Material Neodymium
Magnet Gap Depth 6.5 mm / 0.26"
Former Material Glass Fibre
Dust Dome Material Paper
Voice Coil Material Copper
Cone Material Paper
Suspension Material Fabric
Surround Material Fabric
Thiele Small Parameters
Fs 79.34 Hz
Re 5.45 Ω
Qms 6.79
Qes 0.45
Qts 0.42
Le (@ 1 kHz) 0.34 mh
Vas 13.27 litres
Mms 22.04 g
Sd 226.98 cm2
Cms 183.17 µm/N
BL 13.57 T/m
Xmax 4 mm
Vd 0.0896 litres
Ref. Efficiency 1.74%
EBP 176.31 Hz
Dimensions & Mounting
Overall Diameter 210 mm
Width Across Flats 0 mm
Flange Height 8.5 mm
Depth (Excl. Flange) 88.5 mm
Magnet Diameter 100 mm
Chassis Shoulder Diameter 191 mm
Outer Bolt Circle 8 * M5 on 199mm PCD
Inner Bolt Circle N/A
Shipping Information
Nett Weight 2.2 Kg / 4.85 lb.
Shipping Weight 2.5 Kg / 5.51 lb.
*1 Power compression is the reduction of sensitivity at the specified power. Higher power ratings do not necessarily give a proportionate increase in SPL therefore the maximum SPL of the driver may significantly exceed that of other manufacturers with high power ratings.

1. AES Standard (60 to 600 Hz) Program 300 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 150 Watt preconditioning period.

Please note that frequency response measurements are supplied for comparison purposes only and are not a measure of the low frequency performance which may be achievable in a fully optimised system.
Frequency Response & Impedance
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