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P-Audio IMF-HP18W - 18 inch 500W 8 Ohm
SPL: 94.8dB Fs: 33Hz Xmax: 2.0mm
Product Code: PAUIMFHP18W | Brand: P-Audio | Model: IMF-HP18W

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Multi Packs:
Pack of 2 x IMF-HP18W £195.96 (£97.98 each)
Pack of 4 x IMF-HP18W £385.92 (£96.48 each)
P-Audio IMF-HP18W - 18" 500W 8 Ohm

The P Audio IMF-HP18W is a high output low frequency transducer. The IMF-HP18W NEW is an upgraded design that features many of P Audio's new technologies and performance upgrades. The 18 inch (457mm) diameter piston will produce extremely high sound pressure levels at very low frequencies and is ideal for high level deep bass and sub woofer response in both live sound and recorded music venues. The operating bandwidth of the IMF-HP18W is 30Hz to 200Hz. The transducer uses high energy ferrite magnetics to achieve a very high acoustic output to weight ratio.

The IMF-HP18W employs a medium format 3 inch (76.3mm) diameter voice coil that provides an AES rated 500 watts of continuous power handling and a full 2000 watts of peak rated power handling when sufficient amplifier headroom is available. The IMF-HP18W utilises P Audio's under damper venting technology to improve transducer air flow and reduce turbulence under the damper and around the voice coil.

The voice coil design is bobbin wound geometry with P Audio's precision round wire technology to maximize system conversion efficiency. The suspension has been designed specifically for high linear displacement and extended low frequency response. The transducer chassis is a heavy gauge stamped steel design that ensures a very high degree of structural integrity.

General Specifications

  • Nominal diameter - 457 mm/18 in
  • Power rating - 500 W(AES)
  • Nominal impedance - 8 Ohm
  • Sensitivity - 95 dB
  • Frequency range - 30-200 Hz
  • Chassis type - Heavy Duty Stamp Steel
  • Magnet type - Ferrite
  • Magnet weight - 2.26 kg/79.8 oz
  • Voice coil diameter - 76.3 mm/3.0 in
  • Coil material - SV-W
  • Former material - Aluminum
  • Cone material - Paper
  • Surround material - Cloth
  • Suspension - Single
  • X-max - 2.0 mm/0.08 in
  • Gap depth - 10.0 mm/0.39 in
  • Voice coil winding width - 14.0 mm/0.55 in
  • Net Weight - 9.6 kg/21.2 lb
  • Packing Dimension WxDxH (mm) - 505mm x 505mm x 250mm
  • Shipping Weight - 1 1.2 kg/24.7 lb

Small Signal Parameters

  • Re - 6.7 Ohm
  • Fs - 33 Hz
  • Mms - 156.29 g/5.51 oz
  • Mmd - 133.46 g/4.71 oz
  • Qms - 4.02
  • Qes - 0.54
  • Qts - 0.48
  • Vas - 285.0 lt/10.06 ft
  • BI - 20.08 Tm
  • Cms - 1.5e-04 m/N
  • Rms - 8.07 Ns/m
  • Le (at 1kHz) - 0.75 mH

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