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Fountek FR58EX

Fountek FR58EX Full Range Drive Unit

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The Fountek FR58EX is a compact 53mm full range drive unit featuring an aluminium cone and high flux neodymium magnet. This small drive unit has an excellent impulse response and a surprising total linear excursion of just under 6mm. The frequency response is smooth with low distortion.

Key Features:

  • Aluminium cone / dust cap
  • Rigid pressed steel chassis
  • 20mm copper voicecoil
  • High compliance rubber suspension
  • Aluminium voice coil former
  • Smooth frequency response
  • Neodymium magnet

Basic parameters:

Resonant frequency (fs) 134 Hz Nominal impedance (Zn) 8 Ω
Mechanical  Q factor (Qms) 2.60 DC resistance (Re) 6.4 Ω
Electrical Q factor (Qes) 0.67 RMS power handling 15 W
Total Q factor (Qts) 0.54 Sensitivity (2.83V/1m) 82.3dB
Equivalent volume (Vas) 0.31L Chassis (square) 62 mm

Here's the full datasheet:

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