Fountek RD1.0
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The Fountek RD1.0 is a compact entry level fourth generation ribbon 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 |