Fountek FR89EX-4

• underhung motor design, Neodymium magnet
• +/-5mm liner excursion
• aluminum cone,25mm voice coil
• low distortion,fast transient
• high power handling

Specifications

• power handling (continuous/programme) = 25 W
• frequency range = 70-2000 Hz
• resonance frequency fs = 97 Hz
• impedance R = 4 Ohm
• sound pressure level SPL = 83,7 dB (2,83V; 1m)
• DC resistance Re = 3,4 Ohm
• force factor BL = 2,861 N/A
• effective piston radiating area Sd = 27,34 cm²
• effective mechanical mass incl. air load mms = 2,587 g
• equivalent volume of compliance Vas = 1,111 l
• total Q factor Qts = 0,452 (Qms=1,47, Qes=0,653)
• voice coil diameter = 25 mm
• maximum peak linear excursion vibration x_lin = +/- 5 mm
• mounting diameter d = 73 mm
• overall diameter d = 88,4 mm
• mounting depth (not countersunk) t = 46,9 mm
• mass m = 0,525 kg