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Bass Driver
(1 customer review)
  • New ergonomic, vented cast aluminium chassis offers improved thermal control
  • Power compression only 2.7db at rated power*
  • An effective transducer in a variety of versatile applications
  • Improved motor plating providing a more resilient finish and resistance to corrosion
  • Suitable for horn-loaded and reflex designs
Klippel Verifeid


15" / 380 mm

Coil Diameter

4.0" / 101.6 mm

Power Rating

600 w (A.E.S.)

Frequency Range

40 Hz - 1.5 kHz


99 dB


8.2 mm

Designed specifically to provide powerful and accurate bass frequencies for sound reinforcement in a variety of enclosure types. The PD.1550/2’s improved linear excursion and efficient thermal path effectively dissipates heat minimising distortion and power compression effects.

The advanced magnetic assembly features a composite alloy and steel pole piece generating a uniform and stable magnetic field. The resulting high BL factor contributes to the speed, accuracy and fidelity of the PD.1550/2, maintaining control of the cone under the most demanding conditions.

£220.00 MRRP Ex. VAT

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General Specifications
TypeBass Driver
Nominal Diameter15" / 380 mm
Voice Coil Diameter4.0" / 101.6 mm
Power Rating 1 2 *600 w (A.E.S.)
Available Impedance4 Ω/ 8 Ω/ 16 Ω
Sensitivity (1W/ 1m)*99 dB
Frequency Range40 Hz - 1.5 kHz
Peak Power (6 dB Crest Factor)2400 w (A.E.S.)
Resonance46.17 Hz
Voice Coil Winding Depth22 mm / 0.87"
Recommended Enclosure Volume80 - 200 Litres
Flux Density1.5 Tesla
Magnet MaterialCeramic
Magnet Gap Depth10 mm / 0.39"
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Voice Coil MaterialCopper
Cone MaterialPaper
Suspension MaterialFabric
Surround MaterialFabric
Thiele Small Parameters
Fs46.17 Hz
Re6.59 Ω
Le (@ 1 kHz)0.78 mh
Vas126.39 litres
Mms114.38 g
Sd907.92 cm2
Cms109.33 µm/N
BL26.61 T/m
Xmax8.2 mm
Vd0.73 litres
Ref. Efficiency3.14%
EBP153.9 Hz
Dimensions & Mounting
Overall Diameter408.3 mm
Width Across Flats395 mm
Flange Height11 mm
Depth (Excl. Flange)153.7 mm
Magnet Diameter220 mm
Chassis Shoulder Diameter357 mm
Outer Bolt Circlex6 M6 on 395 mm PCD
Shipping Information
Nett Weight12.8 Kg / 28.22 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 1200 Watts.
2. AES Recommended Practice.
3. Thiele - Small Parameters follow a 1000 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
What people are saying about the PD.1550/2

Please take a moment to share your feedback with us. We love to hear your success stories and comments about our products. It can really help us, and other PD customers, on our continuing mission of creating better sound.

1 review for PD.1550/2

  1. Steve

    I don’t think there’s a better driver for longthrow folded bass

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