The W4-1658SB features a polypropylene cone, rubber surround, long throw 2` voice coil, and shielded neodymium magnet, all housed in a durable plastic frame. Smooth, extended response, including a surprising amount of bass output.
Specifications:
power handling (continuous/programme) = 45/90 W
frequency range = 55-6000 Hz
resonance frequency fs = 55 Hz
impedance R = 4 Ohm
sound pressure level SPL = 87 dB (2,83V; 1m)
DC resistance Re = 3,8 Ohm
force factor BL = 5,62 N/A
voice coil inductance L = 0,144 mH
effective piston radiating area Sd = 78,5 cm2
effective mechanical mass incl. air load mms = 9,98 g
equivalent volume of compliance Vas = 7,42 l
total Q factor Qts = 0,39 (Qms=8,84, Qes=0,41)
voice coil diameter = 49,5 mm
maximum peak linear excursion vibration xlin = +/- 4,5 mm
