20 cm (8") HiFi woofer with strong drive, extended rear pole plate and 35 mm voice-coil for high power handling. Elastic rubber surround and coated paper cone.
Technical Data: |
Rated power | 75 W |
Maximum power | 115 W |
Nominal impedance Z | 4 Ohm |
Frequency response | fu–6000 Hz |
(fu: Lower cut-off frequency depending on cabinet) | . |
Mean sound pressure level | 88 dB (1 W/1 m) |
Opening angle (-6 dB) | 48°/4000 Hz |
Excursion limit | +/−10 mm |
Resonance frequency fs | 29 Hz |
Magnetic induction | 1,1 T |
Magnetic flux | 600 µWb |
Height of front pole-plate | 5 mm |
Voice coil diameter | 35 mm |
Height of winding | 12 mm |
Cutout diameter | 184 mm |
Net weight | 1,5 kg |
D.C. resistance Rdc | 3,4 Ohm |
Mechanical Q factor Qms | 3,99 |
Electrical Q factor Qes | 0,38 |
Total Q factor Qts | 0,35 |
Equivalent volume Vas | 65 l |
Effective piston area Sd | 214 cm² |
Dynamically moved mass Mms | 28 g |
Force factor Bxl | 7,7 Tm |
Inductance of the voice coil L | 1,5 mH |