20 cm (8") woofer with very good price/performance ratio. Suitable for simple 2-way speakers and car rear tray systems. Especially suited as replacement driver for many HiFi speakers.
| Technical Data: |
|---|
| Rated power | 50 W |
| Maximum power | 80 W |
| Nominal impedance Z | 4 Ohm |
| Frequency response | fu–8000 Hz |
| (fu: Lower cut-off frequency depending on cabinet) | . |
| Mean sound pressure level | 88 dB (1 W/1 m) |
| Opening angle (-6 dB) | 49°/4000 Hz |
| Excursion limit | +/−10 mm |
| Resonance frequency fs | 49 Hz |
| Magnetic induction | 1,0 T |
| Magnetic flux | 400 µWb |
| Height of front pole-plate | 5 mm |
| Voice coil diameter | 25 mm |
| Height of winding | 9 mm |
| Cutout diameter | 185 mm |
| Net weight | 1,045 kg |
| D.C. resistance Rdc | 3,2 Ohm |
| Mechanical Q factor Qms | 2,81 |
| Electrical Q factor Qes | 0,62 |
| Total Q factor Qts | 0,51 |
| Equivalent volume Vas | 45 l |
| Effective piston area Sd | 207 cm² |
| Dynamically moved mass Mms | 14 g |
| Force factor Bxl | 4,0 Tm |
| Inductance of the voice coil L | 0,5 mH |
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