Precision Devices PD.1852

Specifications:

Nominal Diameter 18" / 460 mm

Voice Coil Diameter 5.0" / 127 mm
Nominal Impedance 8 Ohms
Power Rating 1000 Watts (A.E.S.)
Peak Power (6dB Crest Factor) 4000 Watts (A.E.S.)
Sensitivity (1w - 1m) 98 dB
Frequency Range 35 Hz - 2 kHz
Recommended Enclosure Volume 90 -220 Litres
Resonance 34 Hz
Voice Coil Winding Depth 29 mm / 1.14"
Magnet Gap Depth 12 mm / 0.453"
Magnet Weight 170 oz / 4.81 Kg
Flux Density 1.18 Tesla
Magnet Material Ceramic
Voice Coil Material Copper
Dust Dome Material Paper
Suspension Material Dual silicone suspension
Cone / Surround Material Paper / HGBC

Thiele Small Parameters:

Fs 40 Hz
Re 5.871 Ohms
Qts 0.33
Qms 11.18
Qes 0.34
Vas 129.1 litres
Mms 242 grams
Sd 1164 cm2
Cms 67.09 µm/N
BL 32 T/m
Xmax 12 mm
Vd 1.397 litres
Reference Efficiency 2.34%

Mounting and Shipping Information

Overall Diameter 474 mm
Width Across Flat 459 mm
Flange Height 14.5 mm
Depth 185 mm
Magnet Diameter 166 mm
Chassis Shoulder Diameter 414.5 mm
Outer Bolt Circle 6x M8 on 455 mm PCD
Inner Bolt Circle N/A
Nett Weight 11.5 Kg / 25.35 lb
Shipping Weight 12.9 Kg / 28.44 lb