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Bass / Mid Range Driver
  • Discontinued – Special Order / OEM Only
  • Contact info@precision-devices.com for order information
  • Heavy-duty cast aluminium chassis for increased rigidity
  • A smooth extended mid range to allow easy crossover integration
  • Suitable for bass reflex designs


15" / 380 mm

Coil Diameter

4.0" / 101.6 mm

Power Rating

700 w (A.E.S.)

Frequency Range

40 Hz - 2.5 kHz


97 dB


10.5 mm
SKU: PD.15BR40.8 Category:


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General Specifications
TypeBass / Mid Range Driver
Nominal Diameter15" / 380 mm
Voice Coil Diameter4.0" / 101.6 mm
Power Rating 1 2 *700 w (A.E.S.)
Available Impedance4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)*97 dB
Frequency Range40 Hz - 2.5 kHz
Peak Power (6 dB Crest Factor)2800 w (A.E.S.)
Resonance38.37 Hz
Voice Coil Winding Depth25 mm / 0.98"
Recommended Enclosure Volume75 - 200 Litres
Flux Density1.34 Tesla
Magnet MaterialCeramic
Magnet Gap Depth9 mm / 0.35"
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Voice Coil MaterialCopper
Cone MaterialPaper
Suspension MaterialFabric
Surround MaterialFabric
Thiele Small Parameters
Fs38.37 Hz
Re5.24 Ω
Le (@ 1 kHz)1.04 mh
Vas140.15 litres
Mms118.75 g
Sd829.58 cm2
Cms145 µm/N
BL21.44 T/m
Xmax10.5 mm
Vd0.89 litres
Ref. Efficiency2.54%
EBP116.27 Hz
Dimensions & Mounting
Overall Diameter410 mm
Width Across Flats395 mm
Flange Height10 mm
Depth (Excl. Flange)148 mm
Magnet Diameter220 mm
Chassis Shoulder Diameter357 mm
Outer Bolt Circle6 * M6 on 395mm PCD
Inner Bolt Circle8 * M6 on 370mm PCD
Shipping Information
Nett Weight13.3 Kg / 29.32 lb.
Shipping Weight14.5 Kg / 31.97 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 1400 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 700 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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