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Visaton Speaker Driver - WS 20 E - 4 Ohm HiFi Woofer
Art. No. 1057
Visaton WS20E - 4 Ohm HiFi Woofer.
Characteristics and Sound Properties
20 cm (8") HiFi woofer with polypropylene cone. Due to balanced frequency response curve suitable for 2-way-applications up to 2000 Hz and as low-midrange driver for large 4-way speaker systems as well. Due to the special basket design suitable as replacement driver for many HiFi speakers.
Technical Specifications
| Rated power | 80 W |
| Maximum power | 120 W |
| Nominal impedance Z | 4 Ohm |
| Frequency response (fu: Lower cut-off frequency depending on cabinet) |
fu-7000 Hz |
| Mean sound pressure level | 88 dB (1W/1m) |
| 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 |
| DC 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 litres |
| Effective piston area Sd | 240 cm2 |
| Dynamically moved mass Mms | 23 grams |
| Force factor Bxl | 4.5 Tm |
| Inductance of the voice coil L | 0.7 mH |
| Connections | 5.2 x 0.8 mm (+) 2.8 x 0.8 mm (−) |
Driver Dimensions
Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)
Frequency and Impedance Response
Loudspeaker Frequency and Impedance Response Graph
Directivity Pattern
Loudspeaker Directivity Pattern (on and off axis response)
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