Natural rubber surround and handcoated paper cone with coated fabric dust cap, to reduce resonances and distortion.
The large magnet system and a symmetrical driving force accomplished through a special coil winding technique for the voice coil gives an excellent linearity. The very large magnet system provides a reasonable efficiency and a low Q.
The extremely stiff and stable injection moulded metal basket keeps the critical components in perfect alignment. And large windows in the basket both above and below the spider reduce sound reflexion, air flow noise and cavity resonance to a minimum.
Specifications
power handling (continuous/programme) = 60/200 W
frequency range = 45-5000 Hz
resonance frequency fs = 57 Hz
impedance R = 8 Ohm
sound pressure level SPL = 86 dB (2,83V; 1m)
DC resistance Re = 6,4 Ohm
force factor BL = 6,35 N/A
voice coil inductance L = 1,05 mH
effective piston radiating area Sd = 55 cm2
effective mechanical mass incl. air load mms = 6,1 g
equivalent volume of compliance Vas = 5 l
total Q factor Qts = 0,31 (Qms=2,17, Qes=0,36)
voice coil diameter = 26 mm
maximum peak linear excursion vibration xlin = +/- 6,4 mm
