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


  • 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.
  • Dual spider configuration with silicone based damping control.
  • 4" High temperature CCAW voice coil.
  • For compact two way ported applications and bass reinforcement in horn loaded designs.
  • Rear aluminium heat sink.


Intended as a high power bass / mid driver in traditional two way or multi way systems designs. The PD.124NR1's lower FS offers the ability for lower cabinet tuning and porting in reflex designs. The unit can also be used as a dedicated bass driver in bass reflex and horn loaded designs.

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 4-inch, high temperature, CCAW voice coil capable of handling 1000W (AES).



* 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 (55 to 550 Hz) Program 1000 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 Diameter12" / 300 mm
Voice Coil Diameter4.04" / 101 mm
Available Impedances4 /8 Ω
Power Rating1000 W (A.E.S.)
Peak Power (6dB Crest Factor)4000 W (A.E.S.)
Sensitivity (1W/ 1m)99 dB
Frequency Range45 Hz - 4000Hz
Recommended Enclosure Volume30 - 70 Litres
Resonance45 Hz
Voice Coil Winding Depth22.00 mm / 0.87 "
Magnet Gap Depth11.00 mm / 0.43 "
Flux Density1.3 Tesla
Magnet MaterialNeodymium
Voice Coil MaterialCopper Clad Aluminium
Former MaterialGlass Fibre
Dust Dome MaterialSolid Paper
Suspension MaterialPoly Cotton / Sillicone Damping
Cone / Surround MaterialPaper / M Roll Poly Cotton
Fs45 Hz
Re6.1 Ω
Le (1 kHz)1.47 mH
Le (10 kHz)0.78 mH
Vas78 litres
Mms66 g
Sd540 cm2
Cms189 ┬Ám/N
BL22 T/m
Xmax8.5 mm
Vd0.459 litres
Ref. Efficiency2.52
EBP193.13 Hz
Overall Diameter331 mm
Width Across Flats320 mm
Flange Height10 mm
Depth (Excl. Flange)146 mm
Magnet Diameter138 mm
Chassis Shoulder Diameter280 mm
Outer Bolt Circle12" x4 M6 318 mm PCD
Nett Weight7.00 Kg / 15.43 lb
Shipping Weight7.50 Kg / 16.53 lb
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