25 cm (10") HiFi woofer with strong drive, extended rear pole plate and 38 mm voice-coil for high power handling. Elastic rubber surround, coated paper cone and magnet vent. Recommended cabinets: Volume/Principle BR-Channel fb 50 l/bass reflex 2 x BR 15.34 43 Hz 70 l/bass reflex 2 x BR 15.34 39 Hz 1 x BR 25.50 (length 7 cm) 100 l/bass reflex 2 x BR 15.34 (length 10 cm) 34 Hz
| Rated power | 100 W |
|---|---|
| Maximum power | 150 W |
| Nominal impedance Z | 4 Ohm |
| Frequency response | fu–5500 Hz |
| (fu: Lower cut-off frequency depending on cabinet) | . |
| Mean sound pressure level | 90 dB (1 W/1 m) |
| Excursion limit | +/−7 mm |
| Resonance frequency fs | 33 Hz |
| Magnetic induction | 1.0 T |
| Magnetic flux | 835 µWb |
| Height of front pole-plate | 7 mm |
| Voice coil diameter | 38 mm |
| Height of winding | 17 mm |
| Cutout diameter | 233 mm |
| Net weight | 3 kg |
| D.C. resistance Rdc | 3.6 Ohm |
| Mechanical Q factor Qms | 2.01 |
| Electrical Q factor Qes | 0.43 |
| Total Q factor Qts | 0.35 |
| Equivalent volume Vas | 135 l |
| Effective piston area Sd | 346 cm² |
| Dynamically moved mass Mms | 32 g |
| Force factor Bxl | 8.9 Tm |
| Inductance of the voice coil L | 0.9 mH |
| Connections | 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-) |
