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 |
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