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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.
|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|