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Sub Bass Driver
  • Heavy-duty cast aluminium Chassis for increased rigidity
  • Double suspension system
  • Easy integration with 2″ compression drivers
  • Effective transducer in a variety of versatile applications


15" / 380 mm

Coil Diameter

4.5" / 115 mm

Power Rating

650 w (A.E.S.)

Frequency Range

50 Hz - 1.5 kHz


96 dB


8.1 mm
SKU: PD.156.8 Category:

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General Specifications
Type Sub Bass Driver
Available Impedance 4 Ω/ 8 Ω/ 16 Ω
Nominal Diameter 15" / 380 mm
Voice Coil Diameter 4.5" / 115 mm
Peak Power (6 dB Crest Factor) * 2600 w (A.E.S.)
Power Rating 1 2 * 650 w (A.E.S.)
Sensitivity (1W/ 1m) * 96 dB
Frequency Range 50 Hz - 1.5 kHz
Resonance 50.25 Hz
Voice Coil Winding Depth 21 mm / 0.83"
Recommended Enclosure Volume 90 - 280 Litres
Flux Density 1.5 Tesla
Magnet Material Ceramic
Magnet Gap Depth 9 mm / 0.35"
Former Material Glass Fibre
Dust Dome Material Paper
Voice Coil Material Copper
Cone Material Paper
Suspension Material Dual Fabric
Surround Material Fabric
Thiele Small Parameters
Fs 50.25 Hz
Re 5.69 Ω
Qms 7.45
Qes 0.5
Qts 0.47
Le (@ 1 kHz) 1 mh
Vas 93.4 litres
Mms 124.55 g
Sd 907.92 cm2
Cms 80.83 µm/N
BL 20.98 T/m
Xmax 8.1 mm
Vd 0.648 litres
Ref. Efficiency 3.63%
EBP 100.5 Hz
Dimensions & Mounting
Overall Diameter 410 mm
Width Across Flats 395 mm
Flange Height 10 mm
Depth (Excl. Flange) 143 mm
Magnet Diameter 220 mm
Chassis Shoulder Diameter 357 mm
Outer Bolt Circle 6 * M6 on 395mm PCD
Inner Bolt Circle 8 * M6 on 370mm PCD
Shipping Information
Nett Weight 13.25 Kg / 29.21 lb.
Shipping Weight 14.25 Kg / 31.42 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 (45 to 450 Hz) Program 1300 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 650 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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