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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


8" / 200 mm

Coil Diameter

2.0" / 51 mm

Power Rating

200 w (A.E.S.)

Frequency Range

50 Hz - 4.5 kHz


92 dB


4.5 mm
SKU: PD.8BM20.8 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) * 800 w (A.E.S.)
Power Rating 1 2 * 200 w (A.E.S.)
Sensitivity (1W/ 1m) * 92 dB
Frequency Range 50 Hz - 4.5 kHz
Resonance 49.04 Hz
Voice Coil Winding Depth 13 mm / 0.51"
Recommended Enclosure Volume 5 - 20 Litres
Flux Density 1.29 Tesla
Magnet Material Ceramic
Magnet Gap Depth 6 mm / 0.24"
Former Material Glass Fibre
Dust Dome Material Paper
Voice Coil Material Copper
Cone Material Paper
Suspension Material Fabric
Surround Material Rubber
Thiele Small Parameters
Fs 49.04 Hz
Re 5.86 Ω
Qms 7.28
Qes 0.42
Qts 0.4
Le (@ 1 kHz) 0.52 mh
Vas 22.18 litres
Mms 34.42 g
Sd 226.98 cm2
Cms 306.33 µm/N
BL 12.48 T/m
Xmax 4.5 mm
Vd 0.102 litres
Ref. Efficiency 0.90%
EBP 116.76 Hz
Dimensions & Mounting
Overall Diameter 210 mm
Width Across Flats 0 mm
Flange Height 8.5 mm
Depth (Excl. Flange) 84.5 mm
Magnet Diameter 135 mm
Chassis Shoulder Diameter 191 mm
Outer Bolt Circle 8 * M5 on 199mm PCD
Inner Bolt Circle N/A
Shipping Information
Nett Weight 3.6 Kg / 7.94 lb.
Shipping Weight 3.9 Kg / 8.6 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 (50 to 500 Hz) Program 800 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 200 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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