1994-2002 [Subscribe to Daily Digest] |
VIFA - MG18WK09-04
6½" midwoofer, glass fibre cone, magnesium chassis
Price:195 euro
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PEERLESS - 850518
High quality 6½" CSX woofer with Peerless' Sandwich cone
CSX 165 C
Thiele Small parameters: Free air Common Baffled
Nominal impedance Zn (ohm) 4
Minimum impedance/at freq. Zmin (ohm/Hz) 3.8/266
Maximum impedance Zo (ohm) 23.4
DC resistance Re (ohm) 3.5
Voice coil inductance Le (mH) 0.8
Capacitor in series with 4 ohm
(for impedance compensation) Cc (µF) 27
Resonance Frequency fs (Hz) 52.4 50.7
Mechanical Q factor Qms 3.07 3.17
Electrical Q factor Qes 0.54 0.56
Total Q factor Qts 0.46 0.48
F (Ratio fs/Qts) F (Hz) 107
Mechanical resistance Rms (Kg/s) 1.92
Moving mass Mms (g) 17.9 19.1
Suspension compliance Cms (mm/N) 0.52
Effective cone diameter D (cm) 13.5
Effective piston area Sd (cm²) 143
Equivalent volume VAS (ltrs) 14.5
Force factor Bl (N/A) 6.2
Reference voltage sensitivity
Re 2.83V 1m at 266 Hz (Measured) (dB) 90.0
Magnet and voice coil parameters:
Voice coil diameter d (mm) 33
Voice coil length h (mm) 16
Voice coil layers n 2
Flux density in gap B (T) 1.08
Total useful flux (mWb) 0.94
Height of the gap hg (mm) 6
Diameter of magnet dm (mm) 102
Height of magnet hm (mm) 16
Weight of magnet (kg) 0.54
Power handling:
Long term Max System Power (IEC) (W) 150
Price:159 euro
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SCAN-SPEAK - 15W/8530K00
Low loss linear suspension, sliced paper cone, SD-1 motor
Characteristic sensitivity (2.83V / 1m) : 85.5 dB
Recommended frequency range : 30 - 6000 Hz
Free air resonance frequency, fs : 30 Hz
DC resistance, Re : 5.8 ohm
Voice coil inductance, Le : 0.35 mH
Effective piston area, Sd : 95 cm²
Moving mass incl. air, md : 13 g
Mechanical loss, Rm : 0.5 Ns/m
Force factor, BL : 7.0 Tm
Equivalent volume, Vas : 28 ltr.
Mechanical Q-factor, Qms : 4.9
Electrical Q-factor, Qes : 0.29
Total Q-factor, Qts : 0.27
Excursion, lin./max. : ±6.5 / ±9 mm
Voice coil diameter : 38 mm
Rated power handling : 60 W
Net weight : 1.6 kg
Price 550 euro
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Hope this help
Philippos
posted by 62.103.179...
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