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¦¸ðµ¨ : Vifa BC25SG15-04
¦
¦Diaphragm : Pre-coated textile
¦
¦Voice Coil : 25mm(diam) on aluminium former, copper clad
¦
¦alu wire 2layers, 1.8mm winding height
¦
¦Magnet : Ferrite, 70mm X 32mm diam., 15mm thickness
¦
¦Ferro fluid : Yes, light type
¦
¦(Pre-coated textile diaphragm for improved consistence
¦Damped cavity in pole for lower resonance frequency and
¦reduced distortion
¦Ferro fluid cooled for higher power handling
¦Optimized face plate for linear frequency response
¦Magnetically shielded with rear magnet and shielding cup)
¦DATA
¦
¦Nominal impedance : 4 OHM
¦
¦Voice coil resistance : 3 OHM
¦
¦Power handling(continuous IEC 268-5), 2,500Hz @12db/oct[W] : 90
¦
¦Sensitivity, 1m@2.83V[dB]:95
¦
¦Resonance frequency[Hz] : 1100
¦
¦Voice coil diameter[mm] : 25
¦
¦Effective cone area[sq. Cm]: 6.8
¦
¦Moving mass, Mms[g] : 0.33
¦
¦Force factor, BL[Tm]:2.2
¦
¦Qms : 2.9
¦
¦Qes : 1.5
¦
¦Qts : 1.0
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