Fostex FE208E Sigma

• HP (Hyperbolic Paraboloid) shell diaphragm
• ‘ES cone’ paper made of banaba plant’s fiber
• UDR tangiential edge / damper
• ø 156mm large ferrite magnet

Technical Data:

• power handling (continuous/programme) = 34/100 W
• frequency range = 42-14000 Hz
• resonance frequency fs = 42 Hz
• impedance R = 8 Ohm
• sound pressure level SPL = 97 dB (2,83V; 1m)
• DC resistance Re = 6,4 Ohm
• force factor BL = 10,8 N/A
• voice coil inductance L = 0,0517 mH
• effective piston radiating area Sd = 201 cm²
• effective mechanical mass incl. air load mms = 13,3 g
• equivalent volume of compliance Vas = 60,1 l
• total Q factor Qts = 0,18 (Qms=6,191, Qes=0,19)
• voice coil diameter = 35 mm
• maximum peak linear excursion vibration x_lin = +/- 1,25 mm
• mounting diameter d = 182 mm
• overall diameter d = 230 mm
• mounting depth (not countersunk) t = 93,5 mm