Sub Bass Driver
  • New ergonomic, vented cast aluminium chassis offers improved thermal control
  • A bl in excess of 20 t/m
  • Improved motor plating providing a more resilient finish and resistance to corrosion
  • Suitable for bass guitar applications
Klippel Verifeid
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Designed as an extremely powerful low frequency transducer for bass and compact bass applications. The PD.154/2 is Ideal for three-way direct radiating systems in which the powerful bass response comes into its own.

Equally at home in drum fill and stage monitor wedges where exceptional low frequency performance makes it an ideal choice. The PD.154/2 is also a faultless choice for bass guitar applications.

General Specifications
Nominal Diameter15" / 380 mm
Voice Coil Diameter4.0" / 101.6 mm
Available Impedances4 Ω/ 8 Ω/ 16 Ω
Power Rating 1 2 *500 w (A.E.S.)
Peak Power (6dB Crest Factor)*2000 w (A.E.S.)
Sensitivity (1W – 1m)*97 dB
Frequency Range40 Hz - 2 kHz
Recommended Enclosure Volume80 - 200 Litres
Resonance44.94 Hz
Voice Coil Winding Depth22 mm / 0.87"
Magnet Gap Depth11 mm / 0.43"
Flux Density1.1 Tesla
Magnet MaterialCeramic
Magnet Weight
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialFabric
Cone MaterialPaper
Surround MaterialFabric
Thiele Small Parameters
Fs44.94 Hz
Re6.5 Ω
Le (@1 kHz)
Le (@10 kHz)1.03 mh
Vas114.9 litres
Mms126.62 g
Sd907.92 cm2
Cms99 µm/N
BL29.44 T/m
Xmax7.7 mm
Vd0.658 litres
Ref. Efficiency3.94%
EBP166.44 Hz


Dimensions & Mounting
Overall Diameter410 mm
Widths Across Flats395 mm
Flange Height10 mm
Depth (Excl. Flange)146 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 Kg / 28.66 lb.
Shipping Weight14 Kg / 30.86 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 (40 to 400 Hz) Program 1000 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 500 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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