13 cm (5") HiFi low-midrange driver with coated paper cone, elastic rubber surround and 25 mm voice-coil. Suitable as woofer and due to the very balanced frequency response also as low-midrange driver especially in large 3-way speaker systems.
Technical Data:
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| Rated power | 50 W |
| Maximum power | 80 W |
| Nominal impedance Z | 8 Ohm |
| Frequency response | fu–12000 Hz |
| (fu: Lower cut-off frequency depending on cabinet) | . |
| Mean sound pressure level | 87 dB (1 W/1 m) |
| Opening angle (-6 dB) | 113°/4000 Hz |
| Excursion limit | +/−8 mm |
| Resonance frequency fs | 52 Hz |
| Magnetic induction | 0,9 T |
| Magnetic flux | 283 µWb |
| Height of front pole-plate | 4 mm |
| Voice coil diameter | 25 mm |
| Height of winding | 8,5 mm |
| Cutout diameter | 109 mm |
| Net weight | 0,63 kg |
| D.C. resistance Rdc | 6 Ohm |
| Mechanical Q factor Qms | 2,26 |
| Electrical Q factor Qes | 0,59 |
| Total Q factor Qts | 0,47 |
| Equivalent volume Vas | 12 l |
| Effective piston area Sd | 74 cm² |
| Dynamically moved mass Mms | 6 g |
| Force factor Bxl | 4,6 Tm |
| Inductance of the voice coil L | 0,6 mH |
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