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Precision Devices Compression Driver Range - Out Now Precision Devices PD.CD1.5NR1 Precision Devices - Exporting Is Great Precision Devices PD.CD1N the precision dna


  • Radial neodymium motor structure.
  • Vented cast aluminium chassis for improved thermal control of voice coil.
  • Forced air cooling vented voice coil gap.
  • Aluminium demodulation ring.
  • 5" High temperature copper voice coil.
  • For two way ported applications and bass reinforcement in bass reflex / horn loaded enclosures.
  • Rear aluminum heat sink.


The PD.155NR1 is intended as a dedicated woofer in bass reflex and horn loaded designs. The unit is also capable as a high power upper bass driver in multiway systems. The optimised radial neodymium motor system allows more efficient management of the magnetic flux, forced air venting and rear aluminium base plate keeps the motor temperature under control and reduces power compression to a minimum. The unit features a 5-inch high temperature copper voice coil capable of handling 900W (AES) the PD.155NR1 exhibits an average sensitivity of 97dB across its working band.


* Half space response measured in a 950 Litre sealed enclosure.

*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.

** Distortion is measured at 10% of the rated power (AES Standard).

1. AES Standard (45 to 450 Hz) Program 800 Watts.

2. AES Recommended Practice.

3. Thiele - Small Parameters follow a 800 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.

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Nominal Diameter15" / 381 mm
Nominal Impedance4 / 8 / 16 Ω
Voice Coil Diameter5.0" / 127 mm
Power Rating1000 W (A.E.S.)
Peak Power (6dB Crest Factor)4000 W (A.E.S.)
Sensitivity (1w / 1m)98.5 dB
Frequency Range45 Hz - 2 kHz
Recommended Enclosure Volume75 - 200 Litres
Voice Coil Winding Depth1.20" / 30.50 mm
Magnet Gap Depth13.00 mm / 0.51"
Flux Density1.18 Tesla
Magnet MaterialNeodymium
Magnet WeightN/A
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialSolid Paper
Suspension MaterialPoly Cotton
Cone Surround MaterialPaper / M Roll Poly Cotton
Fs37 Hz
Re5.4 Ω
Le @1k2.350 mH
Le @10k1.230 mH
Vas140 Litres
Mms154.00 g
Sd895 cm2
Cms123.20 µm/N
BL28.60 T/m
Xmax12 mm
Vd0.980 Litres
Reference Efficiency 2.77 %
EBP156.12 Hz
Overall Diameter408.30 mm
Width Across Flats458.73 mm
Flange Height11.00 mm
Depth210.00 mm
Magnet Diameter168 mm
Chassis Shoulder Diameter415.00 mm
Outer Bolt Circlex6 M8 on 394 mm PCD
Inner Bolt CircleN/A
Nett Weight10.00 Kg / 22.05 lb
Shipping Weight11.00 Kg / 24.25 lb
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