The ScanSpeak R3004/6620.00 1" Ring Radiator Illuminator tweeters continue on with the heritage of the renowned Revelator D29. The large-roll surround and textile dome diaphragm provide a flat frequency response to above 30KHz with outstanding off-axis dispersion. The face plates are die cast in aluminum for a beautiful look with maximum mechanical stability. R3004 builds on the experience of the one-inch R29 ring radiator, resulting in low resonance frequency, superb vocal rendition and excellent imaging at all listening locations.
Scan-speak’s unique AirCirc Magnet System -- named for the way it optimizes air flow within the chamber – rearranges the traditional magnet structure from a single magnet to an open magnetic circuit comprised of six separate neodymium slugs. This, in combination with the chamber, results in the elimination of the reflections and resonances that compromise the performance of traditional motors.
1" Ring Dome Diaphragm
Patented Symmetrical Drive (SD-2) motor
Diffraction Damping Rubber Front
Patented Phase Plug Design
AirCirc Motor Design with 6 Neo magnets
Die Cast Rubber Painted Alu Face Plate
Specifications
power handling (continuous/programme) = 90/150 W
frequency range = 1000-35000 Hz
resonance frequency fs = 520 Hz
impedance R = 4 Ohm
sound pressure level SPL = 90,4 dB (2,83V; 1m)
DC resistance Re = 3 Ohm
force factor BL = 2,3 N/A
voice coil inductance L = 0,03 mH
effective piston radiating area Sd = 5,6 cm2
effective mechanical mass incl. air load mms = 0,3 g
equivalent volume of compliance Vas = 0,01 l
total Q factor Qts = 0,48 (Qms=3,27, Qes=0,56)
voice coil diameter = 26 mm
maximum peak linear excursion vibration xlin = +/- 0,2 mm
