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Visaton W 250 S 8 Ohm, 10 Inch, HiFi Woofer

W 250 S · 8 Ω · part 9035 — Product photo

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W 250 S · 8 Ω · part 9035 — Product photoProduct photo W 250 S · 8 Ω · part 9035 — Dimension drawingDimension drawing W 250 S · 8 Ω · part 9035 — Response and impedanceResponse and impedance

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

W 250 S · 8 Ω · part 9035 — Product photo

Product photo

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Part number: 9035

A 25 cm hi-fi woofer with a 38 mm voice coil for the bass in large multi-way systems.

Nominal size
25 cm / 10 inch
Impedance
8 Ω
Rated power
100 W
Cut-out
233 mm
Sensitivity
90 dB (1 W/1 m)
Resonance
31 Hz
ex VAT
£99.00 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 250 S is a 25 cm hi-fi woofer with a strong motor, an extended rear pole plate, a vented magnet and a 38 mm voice coil for high power handling, driving a coated paper cone on an elastic rubber surround. This 8 Ω version handles 100 W rated power, resonates at 31 Hz and has a d.c. resistance of 6.6 Ω.

Typical applications

  • Three-way hi-fi speakers (bass/midrange)
  • Large multi-way speaker systems
Full specifications
W 250 S · 8 Ω
Rated power100 W
Maximum power150 W
Nominal impedance8 Ω
Frequency response (−10 dB)fu–5500 Hz (fu: lower cut-off depends on the cabinet)
Mean sound pressure level90 dB (1 W/1 m)
Excursion limit±7 mm
Resonance frequency fs31 Hz
Magnetic induction1.0 T
Magnetic flux835 µWb
Height of front pole-plate7 mm
Voice coil diameter38 mm
Height of winding17 mm
Cut-out233 mm
Net weight3 kg
D.C. resistance Rdc6.6 Ω
Mechanical Q factor Qms1.88
Electrical Q factor Qes0.39
Total Q factor Qts0.32
Equivalent volume Vas121 l
Effective piston area Sd346 cm²
Dynamically moved mass Mms38 g
Force factor Bxl9.2 Tm
Inductance of the voice coil L1.5 mH
Terminals4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Dimensions and drawings
W 250 S · 8 Ω · part 9035 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Allow a 233 mm cut-out for a frame that measures 283 mm across, with the fixing holes on a 267 mm circle for 4.8 mm screws; mark the hole positions from the driver itself before drilling. Behind the baffle allow about 112 mm of clear depth for the basket and its 120 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. The driver weighs 3 kg, so brace the baffle and fix into solid material, and allow for the ±7 mm excursion limit when siting a grille.

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 8 Ω load.

Visaton's published enclosure suggestions for this driver: 50 l bass reflex with two BR 15.34 ports (fb 43 Hz); 70 l bass reflex with two BR 15.34 ports or one BR 25.50 port cut to 7 cm (fb 39 Hz); 100 l bass reflex with two BR 15.34 ports cut to 10 cm (fb 34 Hz).

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