Precision Devices PD.185NR1 Sub Bass Driver 18 inch

Rp. 8.590.000 Rp. 5.950.000

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  • 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.
  • 5" High temperature copper voice coil.
  • Triple-roll surround straight cone geometry.
  • For sub bass applications in bass reflex / horn loaded enclosures.


The PD.185NR1 is ideally suited to applications where high power handling, long excursion and perfect linearity is required. Ideal for bass reflex design cabinets. The robust mechanical design and construction makes this unit an ideal choice for fixed or touring applications. The optimised radial neodymium motor system allows more efficient management of the magnetic flux, forced air venting and rear aluminium base plate keeps the motors temperature under control and reduced power compression to a minimum. The unit features a 5-inch, high temperature, copper voice coil capable of handling 1400W (AES) the PD.185NR1 exhibits an average sensitivity of 96dB 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 (35 to 350 Hz) Program 1000 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.

Nominal Diameter18" / 457.2 mm
Nominal Impedance4 / 8 / 16 Ω
Voice Coil Diameter5.0" / 127 mm
Power Rating1400 W (A.E.S.)
Peak Power (6dB Crest Factor)5600 W (A.E.S.)
Sensitivity (1w / 1m)97.5 dB
Frequency Range30 Hz - 800 Hz
Recommended Enclosure Volume90 - 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
Fs34 Hz
Re5.4 Ω
Le @1k2.490 mH
Le @10k1.290 mH
Vas102 Litres
Mms216.00 g
Sd1164 cm2
Cms99.70 µm/N
BL29.50 T/m
Xmax11.75 mm
Vd1.400 Litres
Reference Efficiency2.50 %
EBP117.24 Hz

Overall Diameter473.60 mm
Width Across Flats458.73 mm
Flange Height14.50 mm
Depth200.00 mm
Magnet Diameter140 mm
Chassis Shoulder Diameter415.00 mm
Outer Bolt Circlex6 M8 on 456 mm PCD