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Vifa BC25TG-15-04 Tweeter

4Ω soft dome tweeter, 104mm faceplate.

This 104mm standard tweeter features a 4 ohm 25 mm voice coil, a ferrite magnet assembly, a damped textile dome and ferrofluid in the magnetic gap for enhanced cooling of the voice coil. The BC25TG-15-04 has an injection moulded faceplate with recessed mounting holes, and comes complete with a foam sealing gasket to reduce vibration. Response linearity is very good at this price point.

A full datasheet can be downloaded from the bottom of this page.

Key Features:

  • 25mm damped textile dome
  • Ferrite magnet assembly
  • Ferrofluid cooled voicecoil
  • Smooth, linear response.
  • Excellent value

Basic parameters:

Resonant frequency (fs) 1128 Hz Nominal impedance (Zn) 4 Ω
Effective diaphragm diameter 25 mm DC resistance (Re) 2.99Ω
Ferrofluid ? Y/N Yes RMS power handling 50 W
Recommended crossover 2.5 kHz 12dB Faceplate diameter 104mm
Sensitivity (2.83V/1m) 89.8 dB Cutout hole diameter 70mm

Here's the full datasheet: 

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