Audax AP170M0 Bass Midrange

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Audax AP170M0 Bass Midrange

High performance 173mm / 6½ inch bass midrange drive unit featuring a paper cone (made from virgin pulp), a resonance free polymer chassis and a fully shielded magnet system. This drive unit has that lovely smooth pulp cone sound that eludes so many plastic coned drivers. Downloadable datasheet at bottom of this page.

New old stock in original factory boxes - supply is very limited.

Key Features:

  • Lightweight pulp cone
  • Non resonant high impact polymer chassis
  • Aluminium voice coil former
  • High temperature voice coil
  • High loss foam suspension
  • Fully shielded magnet

Basic parameters:

Resonant frequency (fs) 59.7 Hz Nominal impedance (Zn) 8 Ω
Mechanical  Q factor (Qms) 3.30 DC resistance (Re) 6.2 Ω
Electrical Q factor (Qes) 1.06 RMS power handling 45 W
Total Q factor (Qts) 0.80 Sensitivity (2.83V/1m) 87.3 dB
Equivalent volume (Vas) 17.62L Chassis (squared section) 173 mm

Here's the full datasheet:

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