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Visaton W 170 S 4 Ohm, 6.5 Inch, HiFi Woofer

W 170 S · 4 Ω · part 9024 — Product photo

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W 170 S · 4 Ω · part 9024 — Product photoProduct photo W 170 S · 4 Ω · part 9024 — Rear view and connections (8 Ω version shown)Rear view and connections (8 Ω version shown) W 170 S · 4 Ω · part 9024 — Dimension drawingDimension drawing W 170 S · 4 Ω · part 9024 — Response and impedanceResponse and impedance W 170 S · 4 Ω · part 9024 — Directivity patternDirectivity pattern

Product photographs and manufacturer drawings. Images are not to scale.

W 170 S · 4 Ω · part 9024 — Product photo

Product photo

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Part number: 9024

A 17 cm hi-fi woofer built for long cone travel and bass duty in multi-way speakers.

Nominal size
17 cm / 6.5 inch
Impedance
4 Ω
Rated power
50 W
Cut-out
148 mm
Sensitivity
86 dB (1 W/1 m)
Resonance
36 Hz
ex VAT
£62.34 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.

Quantity discounts

Description

The W 170 S is a hi-fi woofer designed for long cone excursions, with a coated paper cone, a powerful motor with an extended rear pole plate and a special voice coil and elastic rubber surround to suit the travel. This 4 Ω version handles 50 W rated power, has an excursion limit of ±10 mm and a d.c. resistance of 3.2 Ω.

Typical applications

  • Two-way hi-fi speakers
  • Three-way hi-fi speakers (bass/midrange)
Full specifications
W 170 S · 4 Ω
Rated power50 W
Maximum power80 W
Nominal impedance4 Ω
Frequency response (−10 dB)fu–8000 Hz (fu: lower cut-off depends on the cabinet)
Mean sound pressure level86 dB (1 W/1 m)
Opening angle (-6 dB)72°/4000 Hz
Excursion limit±10 mm
Resonance frequency fs36 Hz (datasheet: 40 Hz)
Magnetic induction1.0 T
Magnetic flux314 µWb
Height of front pole-plate4 mm
Voice coil diameter25 mm
Height of winding12.5 mm
Cut-out148 mm
Net weight1.1 kg
D.C. resistance Rdc3.2 Ω
Mechanical Q factor Qms2.16
Electrical Q factor Qes0.51
Total Q factor Qts0.41
Equivalent volume Vas38 l
Effective piston area Sd129 cm²
Dynamically moved mass Mms12 g
Force factor Bxl4.4 Tm
Inductance of the voice coil L0.6 mH
Terminals4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Temperature range−20 to 70 °C
Dimensions and drawings
W 170 S · 4 Ω · part 9024 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Allow a 148 mm cut-out for a frame that measures 187.3 mm across, with the fixing holes on a 175.8 mm circle for 4.4 mm screws; mark the hole positions from the driver itself before drilling. Behind the baffle allow about 74 mm of clear depth for the basket and its 80 mm magnet, with room beyond that for the terminals and the wiring.

Fit it to a rigid baffle with a continuous gasket or sealing strip between the frame and the panel, and tighten the fixings evenly and only enough to seal so the frame is not pulled out of shape. Check that the cone and the rubber surround stay clear of the grille and of any internal bracing. It is made for long strokes, so allow for the ±10 mm excursion limit when siting a grille or fascia.

The terminals take 4.8 x 0.8 mm blades on the positive side and 2.8 x 0.8 mm on the negative, so blade size identifies polarity. Use matching push-on connectors, observe polarity, insulate the joints and keep the wiring clear of the moving parts, and choose an amplifier or crossover suited to the 4 Ω load.

Confirm the closed-box volume and tuning before construction. Visaton's published bass-reflex suggestions for this driver: 20 l bass reflex with one BR 19.24 port cut to 14 cm (fb 44 Hz); 30 l bass reflex with one BR 15.34 port cut to 12 cm (fb 39 Hz); 50 l bass reflex with a BR 15.34 port (fb 33 Hz).

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