SKU: V-1057-WS20E WS 20 E - 4 Ohm

Visaton Speaker Driver - WS 20 E - 4 Ohm HiFi Woofer
Art. No. 1057

Characteristics and Sound Properties
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 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 uWb
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 (−)
Protective system	IP 65 (Front only)