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Visaton FRS 7 4 Ohm, 2.5 Inch, Full Range Speaker

FRS 7 · 4 Ω · part 2011 — Product photo

Product photo · Enlarge image

FRS 7 · 4 Ω · part 2011 — Product photoProduct photo FRS 7 · 4 Ω · part 2011 — Label and terminalsLabel and terminals FRS 7 · 4 Ω · part 2011 — Dimension drawingDimension drawing FRS 7 · 4 Ω · part 2011 — Response and impedanceResponse and impedance FRS 7 · 4 Ω · part 2011 — Directivity patternDirectivity pattern

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

FRS 7 · 4 Ω · part 2011 — Product photo

Product photo

Open original image
Part number: 2011

A compact full-range driver with 88 dB sensitivity for narrow speaker columns, electronic equipment and model projects.

Nominal size
6.5 cm / 2.5 inch
Impedance
4 Ω
Rated power
8 W
Cut-out
61 mm
Sensitivity
88 dB (1 W/1 m)
Resonance
220 Hz
ex VAT
£13.14 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 small metal basket and waterproof cone suit compact installations. The listed IP64 protection applies only to the front in a sealed enclosure.

Typical applications

  • Narrow column loudspeakers
  • Equipment monitoring
  • Model projects
  • Electronic instruments
Full specifications
FRS 7 · 4 Ω
Rated power8 W
Maximum power15 W
Nominal impedance4 Ω
Frequency response (−10 dB)200–20000 Hz
Mean sound pressure level88 dB (1 W/1 m)
Opening angle (-6 dB)149°/4000 Hz
Excursion limit±1.5 mm
Resonance frequency fs220 Hz
Magnetic induction1.2 T
Magnetic flux160 µWb
Height of front pole-plate2 mm
Voice coil diameter14 mm
Height of winding3.5 mm
Cut-out61 mm
Net weight0.2 kg
D.C. resistance Rdc3.6 Ω
Mechanical Q factor Qms3.21
Electrical Q factor Qes1.96
Total Q factor Qts1.22
Equivalent volume Vas0.3 l
Effective piston area Sd22 cm²
Dynamically moved mass Mms0.8 g
Force factor Bxl1.7 Tm
Inductance of the voice coil L0.3 mH
Terminals2.8 x 0.5 mm (+)/2.8 x 0.5 mm (-)
Protective systemIP64 at the front when installed in a sealed enclosure
Temperature range-40 to 100 °C
Dimensions and drawings
FRS 7 · 4 Ω · part 2011 — Dimension drawing

Dimension drawing · Open original image

Installation and cabinet guidance

Check the 61 mm panel opening against the actual basket before cutting, and leave room for the rear connections. Align the fixing holes before drilling. Optional grille: 2312.

Use an amplifier suitable for the 4 Ω load and observe terminal polarity. For a 100 V line system, connect through a suitable line transformer; do not connect the driver directly to the line.

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