The Scan-speak D2905/9500 is similar to the D2905/9300, but with non-resonant chamber. The optimized pole piece geometry reduces flow resistance and the anti-resonator-plug in the rear chamber eliminates turbulence. A light ferrofluid is used in the air gap to ensure optimal linear mechanical behavior and minimal micro-dynamic non-linearity. This tweeter has a smooth transparent sound and very low levels of distortion. A perfect choice for any high end system.
Specifications
power handling (continuous/programme) = 150/460 W
frequency range = 1500-28000 Hz
resonance frequency fs = 550 Hz
impedance R = 6 Ohm
sound pressure level SPL = 90 dB (2,83V; 1m)
DC resistance Re = 4,7 Ohm
force factor BL = 3,5 N/A
voice coil inductance L = 0,07 mH
effective piston radiating area Sd = 8,5 cm2
effective mechanical mass incl. air load mms = 0,45 g
equivalent volume of compliance Vas = 0,02 l
total Q factor Qts = 0,38 (Qms=1,04, Qes=0,6)
voice coil diameter = 28 mm
maximum peak linear excursion vibration xlin = +/- 0,4 mm
