Precision Devices International Limited Precision Devices Made in UK
PD.123C01 - out now PD.184C01 - Out now PD.155N01 the precision dna

PDN.2151

  • Heavy-duty cast aluminium chassis for increased rigidity.
  • Power compression 2dB at rated power.
  • A B/L in excess of 35 T/m.
  • Double suspension system.
  • Suitable for horn loaded or bass reflex designs.
  • Lightweight neodymium magnet.
  • 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 (30 to 300 Hz) Program 2000 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.

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SPECIFICATIONS
Nominal Diameter530 mm / 21"
Voice Coil Diameter152 mm / 6.0"
Nominal Impedance8 Ω
Available In4 Ω/ 8 Ω/ 16 Ω
Power Rating1000 w (A.E.S.)
Peak Power (6dB Crest Factor)4000 w (A.E.S.)
Sensitivity (1w / 1m)98 dB
Frequency Range30 Hz - 1 kHz
Recommended Enclosure Volume130 - 350 Litres
Resonance31.44 Hz
Voice Coil Winding Depth30 mm / 1.18"
Magnet Gap Depth15 mm / 0.59"
Flux Density Tesla1.1 Tesla
Magnet MaterialNeodymium
Voice Coil MaterialCopper
Former MaterialGlass Fibre
Dust Dome MaterialPaper
Suspension MaterialDual Fabric
Cone Surround MaterialPaper / Fabric
THIELE SMALL PARAMETERS
Fs 31.44 Hz
Re 5.35 Ω
Qms18.3
Qes0.28
Qts0.28
Le 1.9 mh
L2 3.79 mh
R2 11.28 Ω
Vas 303.35 litres
Mms 342.86 g
Sd 1698.23 cm2
Cms 74.67 µm/N
BL35.86 T/m
Xmax10.5 mm
Vd1.76 litres
Ref. Efficiency4.81%
MOUNTING AND SHIPPING INFORMATION
Overall Diameter550 mm
Width Across Flats532 mm
Flange Height14 mm
Depth (Excl. Flange)204 mm
Magnet Diameter223 mm
Chassis Shoulder Diameter492 mm
Outer Bolt Circle6* M6 on 528mm PCD
Inner Bolt CircleN/A
Nett Weight16.3 Kg / 35.93 lb.
Shipping Weight21.25 Kg / 46.85 lb.
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