Visaton FR 10 4 Ohm, 4 Inch, Full Range Speaker
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The FR 10 is designed for music and speech in built-in audio systems, vehicles and speaker columns. This 4 Ω version handles 30 W rated power and fits a 100 mm mounting cut-out.
Typical applications
- Built-in music systems
- Vehicle audio installations
- Electronic instruments
- Column loudspeakers
Full specifications
| Rated power | 30 W |
|---|---|
| Nominal impedance | 4 Ω |
| Frequency response (−10 dB) | 80–20000 Hz |
| Mean sound pressure level | 86 dB (1 W/1 m) |
| Opening angle (-6 dB) | 113°/4000 Hz |
| Excursion limit | ±4 mm |
| Resonance frequency fs | 90 Hz |
| Magnetic induction | 0.95 T |
| Magnetic flux | 180 µWb |
| Height of front pole-plate | 3 mm |
| Voice coil diameter | 20 mm |
| Height of winding | 6 mm |
| Cut-out | 100 mm |
| Net weight | 0.38 kg |
| D.C. resistance Rdc | 3.2 Ω |
| Mechanical Q factor Qms | 2.29 |
| Electrical Q factor Qes | 0.7 |
| Total Q factor Qts | 0.54 |
| Equivalent volume Vas | 2.3 l |
| Effective piston area Sd | 50 cm² |
| Dynamically moved mass Mms | 5.7 g |
| Force factor Bxl | 4.6 Tm |
| Inductance of the voice coil L | 0.2 mH |
| Terminals | 5.2 x 0.5 mm (+)/2.8 x 0.5 mm (-) |
| Temperature range | –25 to 70 °C |
Dimensions and drawings

Dimension drawing · Open original image
Installation and cabinet guidance
Allow for a 100 mm panel opening and align the four mounting slots before drilling. Use connectors that fit the 5.2 × 0.5 mm positive and 2.8 × 0.5 mm negative terminals, leaving room behind them for the wiring. Optional grilles: 4642, 4640, 4670 and 4744.
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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