20 cm (8") HiFi woofer with polypropylene cone. Due to balanced frequency response curve suitable as low-midrange driver for large 4-way speaker systems. Due to the special basket design suitable as replacement driver for many HiFi speakers.
Technical Data: |
Rated power | 80 W |
Maximum power | 120 W |
Nominal impedance Z | 4 Ohm |
Frequency response | fu–7000 Hz |
(fu: Lower cut-off frequency depending on cabinet) | . |
Mean sound pressure level | 88 dB (1 W/1 m) |
Opening angle (-6 dB) | 67°/4000 Hz |
Excursion limit | +/−6 mm |
Resonance frequency fs | 47 Hz |
Magnetic induction | 0,85 T |
Magnetic flux | 400 µWb |
Height of front pole-plate | 5 mm |
Voice coil diameter | 30 mm |
Height of winding | 11 mm |
Cutout diameter | 186 mm |
Net weight | 1,3 kg |
D.C. resistance Rdc | 3,3 Ohm |
Mechanical Q factor Qms | 5,56 |
Electrical Q factor Qes | 1,44 |
Total Q factor Qts | 1,14 |
Equivalent volume Vas | 39 l |
Effective piston area Sd | 240 cm² |
Dynamically moved mass Mms | 23 g |
Force factor Bxl | 4,5 T m |
Inductance of the voice coil L | 0,7 mH |
Connections | 5,2 x 0,8 mm (+) 2,8 x 0,8 mm (−) |