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Audax HM170X2 Bass Midrange

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Audax HM170X2 Bass Midrange

Patented TPX (Polymethylpentene) cone.

Audiophile 170mm / 6½ inch drive unit from the prestige range. Featuring a patented TPX (Polymethylpentene) cone and fully ventilated chassis / pole piece, edgewound flat copper voicecoil, high loss rubber phase plug. Superb drive unit with a text book response curve.

New old stock in original factory boxes - very rare.

Key Features:

  • Patented TPX Polymethylpentene cone
  • Non resonant diecast Zamak chassis
  • Edgewound flat copper voicecoil
  • High compliance rubber suspension
  • Kapton voice coil former
  • High loss rubber phase plug
  • Gold plated terminals

Basic parameters:

Resonant frequency (fs) 46 Hz Nominal impedance (Zn) 8 Ω
Mechanical  Q factor (Qms) 10.62 DC resistance (Re) 6.0 Ω
Electrical Q factor (Qes) 0.46 RMS power handling 70 W
Total Q factor (Qts) 0.44 Sensitivity (2.83V/1m) 90 dB
Equivalent volume (Vas) 29.8L Chassis diameter (cropped) 188 mm

Here's the full datasheet:

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