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Visaton WS 20 E 4 Ohm, 8 Inch, HiFi Woofer

Visaton WS 20 E - 4 Ω — Product photo

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Visaton WS 20 E - 4 Ω — Product photoProduct photo Visaton WS 20 E - 4 Ω — Dimension drawingDimension drawing Visaton WS 20 E - 4 Ω — Response and impedanceResponse and impedance Visaton WS 20 E - 4 Ω — Directivity patternDirectivity pattern

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Visaton WS 20 E - 4 Ω — Product photo

Product photo

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Part number: 1057

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.

Rated power
80 W
Maximum power
120 W
Nominal impedance Z
4 Ω
Frequency response
fu–7000 Hz
Mean sound pressure level
88 dB (1 W/1 m)
Cutout diameter
186 mm
ex VAT
£35.94 inc VAT
Maximum quantity available reached.

Stock and dispatch
Selected products are held in UK stock; other lines are sourced to order. Dispatch timing depends on the product and quantity.

Delivery information. Need it for a specific date? Ask us.

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Description

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.

Typical applications

  • Custom loudspeaker systems
  • Replacement-driver projects
  • Low-frequency or full-range duties described by the manufacturer
Full specifications
WS 20 E 4 Ohm, 8 Inch, HiFi Woofer
Rated power80 W
Maximum power120 W
Nominal impedance Z4 Ω
Frequency responsefu–7000 Hz
Mean sound pressure level88 dB (1 W/1 m)
Opening angle (-6 dB)67°/4000 Hz
Excursion limit±6 mm
Resonance frequency fs47 Hz
Magnetic induction0.85 T
Magnetic flux400 µWb
Height of front pole-plate5 mm
Voice coil diameter30 mm
Height of winding11 mm
Cutout diameter186 mm
Net weight1.3 kg
D.C. resistance Rdc3.3 Ω
Mechanical Q factor Qms5.56
Electrical Q factor Qes1.44
Total Q factor Qts1.14
Equivalent volume Vas39 l
Effective piston area Sd240 cm²
Dynamically moved mass Mms23 g
Force factor Bxl4.5 T m
Inductance of the voice coil L0.7 mH
Connections5.2 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Protective system (front only, in a sealed enclosure)IP 65
Dimensions and drawings
Visaton WS 20 E - 4 Ω — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Use the manufacturer drawing to confirm cut-out, depth and fixing positions before machining the enclosure.

Connect an amplifier suitable for the stated nominal impedance and observe terminal polarity where marked.

The stated IP protection applies to the front only when the driver is built into a sealed enclosure; Visaton notes that bonding the driver and adding a front cover or grille may be necessary.

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