Visaton FR 77 8 Ohm, 3 Inch, Full Range Speaker
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The FR 77 combines 5 W rated power with 87 dB sensitivity. Its square frame suits built-in speech and music systems.
Typical applications
- Conference systems
- Communication equipment
- Multimedia installations
- Column loudspeakers
Full specifications
| Rated power | 5 W |
|---|---|
| Maximum power | 7 W |
| Nominal impedance | 8 Ω |
| Frequency response (−10 dB) | 150–20000 Hz |
| Mean sound pressure level | 87 dB (1 W/1 m) |
| Resonance frequency fs | 250 Hz |
| Cut-out | 71 mm — check fit against the driver before cutting |
| Net weight | 0.15 kg |
| Terminals | 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-) |
| Temperature range | -20 to 70 °C |
Dimensions and drawings

Dimension drawing · Open original image
Installation and cabinet guidance
Allow for a 77 mm square frame and 32.8 mm speaker depth, plus room for the connections. Confirm the required panel opening against the actual driver before cutting.
Use an amplifier suitable for the 8 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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