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Visaton W 170 8 Ohm, 6.5 Inch, HiFi Woofer

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W 170 · 8 Ω · part 9063 — Product photo

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W 170 · 8 Ω · part 9063 — Product photo Product photo W 170 · 8 Ω · part 9063 — Dimension drawing Dimension drawing W 170 · 8 Ω · part 9063 — Response and impedance Response and impedance W 170 · 8 Ω · part 9063 — Directivity pattern Directivity pattern

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W 170 · 8 Ω · part 9063 — Product photo

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Part number: 9063

A 17 cm hi-fi woofer for simple two-way speakers, car rear tray systems and replacement work.

Nominal size
17 cm / 6.5 inch
Impedance
8 Ω
Rated power
40 W
Cut-out
146 mm
Sensitivity
87 dB (1 W/1 m)
Resonance
57 Hz
£20.95 Business price, ex VAT £25.14 inc VAT at 20%
Maximum quantity available reached.

Description

The W 170 is a straightforward, good-value 17 cm woofer for simple two-way speakers, car rear tray installations and replacement duty in finished hi-fi speakers. This 8 Ω version takes 40 W rated power, resonates at 57 Hz, gives 87 dB sensitivity from a 25 mm voice coil and has a mechanical excursion limit of ±7.5 mm.

Typical applications

  • Two-way hi-fi speakers
  • Car audio installations
  • Replacement hi-fi woofer
Full specifications
W 170 · 8 Ω
Rated power40 W
Maximum power70 W
Nominal impedance8 Ω
Frequency response (−10 dB)fu–6000 Hz (fu: lower cut-off depends on the cabinet)
Mean sound pressure level87 dB (1 W/1 m)
Opening angle (-6 dB)54°/4000 Hz
Excursion limit±7.5 mm
Resonance frequency fs57 Hz
Magnetic induction1.0 T
Magnetic flux240 µWb
Height of front pole-plate3 mm
Voice coil diameter25 mm
Height of winding7 mm
Cut-out146 mm
Net weight0.77 kg
D.C. resistance Rdc7.2 Ω
Mechanical Q factor Qms2.92
Electrical Q factor Qes0.9
Total Q factor Qts0.69
Equivalent volume Vas24 l
Effective piston area Sd137 cm²
Dynamically moved mass Mms8.7 g
Force factor Bxl5.0 Tm
Inductance of the voice coil L0.9 mH
Terminals4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Dimensions and drawings
W 170 · 8 Ω · part 9063 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Allow a 146 mm panel opening for a 170 mm frame, with the fixing holes on a 159 mm circle as 5 x 7 mm slots. Behind the panel the driver needs about 63 mm of clear depth for the basket and the 80 mm magnet, with room beyond that for the terminals and the wiring. The slots give a little adjustment, so mark them from the driver itself rather than working to a nominal pitch.

Mount it on 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. Keep the cone and the surround clear of the grille and of any internal bracing. 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 width identifies polarity; observe it and use an amplifier or crossover suited to the 8 Ω load.

The lower cut-off depends on the enclosure volume and tuning, so test the driver in the intended enclosure at the intended listening level before finalising the cabinet.

If it is going in as a replacement, check the cut-out, the fixing pattern, the depth behind the panel and the impedance against the original driver before ordering. On a car rear tray, also check that the space behind the panel stays clear once the boot is loaded.

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