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MADE IN ENGLAND PRECISION DEVICES Specifications • Heavy duty cast aluminium frame for increased rigidity • Bass/Mid Range • 150WRMS • 2” copper voice coil assembly • Neodymium magnet assembly • Net Weight: 2.2kg PDN.8BM31 Nominal Diameter Voice coil diameter Nominal Impedance Power rating (AES) 1 Sensitivity 2 (1W/1M) Frequency range Enc Vol recommended Displacement limit (peak-peak) Resonance Voice coil Voice coil winding depth Magnet gap depth Flux Density Dust dome Suspension Cone/Surround 20cm (8”) 51 mm (2”) 4, 8 or 16 Ohms 150 Watts RMS 95 dB/1W/1m 70-5.0 KHz 5-20 Litres 12 mm 70 Hz copper 11.5 mm 6.5 mm 1.425 T Paper Fabric Paper/fabric Notes 1. AES Standard (60 to 600 Hz) Program 300 Watts 2. AES Recommended Practice. Thiele - Small Parameters Perfectly suited for full range high power applications in compact enclosures, the PDN.8BM30 excels in compact sound systems popular for total coverage of the dance floor where low profile cabinets are required with excellent low frequency response. Neodymium technology ensures superb versatility in situations in which a conventional ceramic magnet transducer is unsuitable on grounds of portability or ease of installation. Fs L1 L2 Res RMSE-load Qts RMSE-free Qms Vas Qes Mms Sd Cms R2 BL Xmax Re 71.037 Hz 0.461 mH 1.161 mH 81.455 Ohms 0.556 Ohms 0.286 0.815 Ohms 4.650 15.171 Litres 0.305 21.247 grams 213.82 sq cm 236.246 µM/N 4.400 Ohms 12.889 T/m 4.00 mm 5.347 Ohms Notes 3. Thiele - Small Parameters follow a 150 Watt preconditioning period. Response Detail Impedance Detail Mechanical Data Dimensions in mm 4.5 200 Nett Weight 2.2 Kg (4.85 Lbs.) 190 210 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. Half space response measured in a 975 Litre sealed box. WORLD HEADQUARTERS Precision Devices Grantley Way Wakefield West Yorkshire WF1 4PY England Tel: +44 (0) 1924 332188 Fax: +44 (0) 1924 239988 Email: [email protected] W: www.precision-devices.com FACTORY Precision Devices Jenson House Cardrew Industrial Estate Redruth Cornwall TR15 1SS England PDN.8BM31 8 Fixing holes M5 89.5 Shipping weight 2.5 Kg (5.51 Lbs.) Precision Devices operate a policy of continuous research and development. The implementation of new materials or production methods will always equal or exceed the published specifications, which may change without notice. Details shown on this sheet are correct at time of printing. April 2005