Precision Devices International Limited Precision Devices Made in UK
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PD.1850/2

  • Heavy-duty cast aluminium chassis for increased rigidity.
  • Power compression only 1.6dB at rated power.
  • A B/L in excess of 30 T/m.
  • Double suspension.
  • Appropriate for applications as diverse as scoop bins, conventional reflex cabinets and horn loaded systems.
  • AVAILABLE IN SOLIDUS EDITION.


*2.83V. Half space response measured in a 975 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.

1. AES Standard (35 to 350 Hz) Program 1600 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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SPECIFICATIONS
Nominal Diameter460 mm / 18"
Voice Coil Diameter127 mm / 5.0"
Nominal Impedance8 Ω
Available In4 Ω/ 8 Ω/ 16 Ω
Power Rating800 w (A.E.S.)
Peak Power (6dB Crest Factor)3200 w (A.E.S.)
Sensitivity (1w / 1m)98 dB
Frequency Range35 Hz - 2 kHz
Recommended Enclosure Volume90 - 220 Litres
Resonance33.15 Hz
Voice Coil Winding Depth28 mm / 1.1"
Magnet Gap Depth12 mm / 0.47"
Flux Density Tesla1.18 Tesla
Magnet MaterialCeramic
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialFabric
Cone Surround MaterialPaper / Fabric
THIELE SMALL PARAMETERS
Fs 33.15 Hz
Re 5.22 Ω
Qms15.42
Qes0.24
Qts0.24
Le 1.33 mh
L2 2.45 mh
R2 5.3 Ω
Vas 203.84 litres
Mms 215.24 g
Sd 1164.16 cm2
Cms 107 µm/N
BL30.99 T/m
Xmax11.05 mm
Vd1.28 litres
Ref. Efficiency2.88%
MOUNTING AND SHIPPING INFORMATION
Overall Diameter474 mm
Width Across Flats459 mm
Flange Height14.5 mm
Depth (Excl. Flange)175 mm
Magnet Diameter280 mm
Chassis Shoulder Diameter414.5 mm
Outer Bolt Circle6 * M8 on 455mm PCD
Inner Bolt CircleN/A
Nett Weight22.8 Kg / 50.26 lb.
Shipping Weight26.6 Kg / 58.64 lb.
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