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Fountek RD1.0

Fountek RD1.0 Ribbon Tweeter

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The Fountek RD1.0 is a compact, inexpensive entry level fourth generation tweeter with a 90mm circular faceplate. This design features a 40x8mm ribbon mounted in an aperiodic shallow horn coupled to a powerful neodymium magnet assembly yielding a smooth, extended response with high efficiency and low distortion. The ribbon is made from an ultra light (10mg) multilayer aluminium sandwich with a cross section of 0.015mm (approx 0.6 thou). An impedance matching transformer is built into the back of the housing.

We recommend a minimum crossover frequency of 3.5kHz / 18db octave.

Key Features:

  • Extended response 3000Hz - 40kHz
  • Ultra lightweight ribbon
  • Neodymium magnet system
  • Built in transformer
  • Low distortion
  • Excellent transients
  • High efficiency design
  • 4th generation technology
  • Great value for money

Basic parameters:

Frequency range 3000Hz-40kHz Nominal impedance (Zn) 8 Ω
Ribbon dimensions 8x40mm DC resistance (Ribbon) 0.018 Ω
Effective area (squared) 320mm RMS power handling 12 W
Crossover frequency 3.5kHz/18db Peak power 25W
Sensitivity (2.83V/1m) 93dB Faceplate (diameter) 90mm