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Visaton G 25 FFL 8 Ohm, 1 Inch, Fabric Dome Tweeter

G 25 FFL · 8 Ω · part 1175 — Product photo

Product photo · Enlarge image

G 25 FFL · 8 Ω · part 1175 — Product photo Product photo G 25 FFL · 8 Ω · part 1175 — Rear view and connections Rear view and connections G 25 FFL · 8 Ω · part 1175 — Dimension drawing Dimension drawing G 25 FFL · 8 Ω · part 1175 — Response and impedance Response and impedance G 25 FFL · 8 Ω · part 1175 — Directivity pattern Directivity pattern G 25 FFL · 8 Ω · part 1175 — Cumulative spectral decay Cumulative spectral decay

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

G 25 FFL · 8 Ω · part 1175 — Product photo

Product photo

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Part number: 1175

A 25 mm fabric dome tweeter for the high-frequency range above 2000 Hz.

Nominal size
25 mm / 1 inch
Impedance
8 Ω
Rated power
80 W (12 dB/oct. high-pass from 2000 Hz)
Cut-out
80 mm
Sensitivity
90 dB (1 W/1 m)
Resonance
1600 Hz
ex VAT
£85.14 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 G 25 FFL has an optimised, double-coated fabric dome and a heavily damped surround, which together give a linear response, and its powerful magnet drive and ferrofluid-cooled voice coil provide high efficiency and power handling. This 8 Ω version takes 80 W with a 12 dB/oct. high-pass from 2000 Hz, gives 90 dB (1 W/1 m) and resonates at 1600 Hz.

Typical applications

  • Tweeter for multi-way hi-fi speakers
  • Speaker kit builds
Full specifications
G 25 FFL · 8 Ω
Rated power80 W (12 dB/oct. high-pass from 2000 Hz) / 120 W (12 dB/oct. high-pass from 4000 Hz)
Maximum power140 W (12 dB/oct. high-pass from 2000 Hz) / 180 W (12 dB/oct. high-pass from 4000 Hz)
Nominal impedance8 Ω
Frequency response (−10 dB)1000–30000 Hz
Mean sound pressure level90 dB (1 W/1 m)
Opening angle (-6 dB)167°/8000 Hz
Resonance frequency fs1600 Hz
Magnetic induction1.7 T
Magnetic flux425 µWb
Height of front pole-plate2.5 mm
Voice coil diameter25 mm
Height of winding2 mm
Cut-out80 mm
Net weight0.56 kg
D.C. resistance Rdc5.6 Ω
Mechanical Q factor Qms0.66
Electrical Q factor Qes1.11
Total Q factor Qts0.41
Effective piston area Sd4.9 cm²
Dynamically moved mass Mms0.3 g
Inductance of the voice coil L0.05 mH
Terminals4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-)
Dimensions and drawings
G 25 FFL · 8 Ω · part 1175 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Allow an 80 mm panel opening. The round faceplate is 104.5 mm in diameter, with 4.3 mm fixing holes countersunk to 8 mm on a 94 mm circle; mark them from the unit itself rather than assuming the spacing. Behind the panel allow about 24 mm for the 75 mm rear housing, plus room for the terminals and the wiring.

Mount it on a rigid baffle with a continuous seal between the faceplate and the panel, tighten the fixings evenly and only enough to seal so the faceplate is not distorted, and keep the dome clear of any grille. It is heavy for a dome tweeter, so make sure the baffle and the fixings can carry it. Connect to the 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-) blade terminals with matching push-on connectors and observe polarity; the two blade widths identify it. The power ratings apply only with a 12 dB/oct. high-pass filter, and they depend on where it is set: 80 W from 2000 Hz, or 120 W from 4000 Hz. Feed it through the system crossover or a high-pass filter that gives at least that protection; never connect it directly to a full-range signal. Use an amplifier suitable for the 8 Ω load.

Visaton lists the WG 148 R and WG 220x150 waveguides as accessories for this tweeter and offers a protective grille for the dome. A waveguide changes both the dispersion and the response, so allow for that when setting the crossover.

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