Visaton FR 10 F 4 Ohm, 4 Inch, Full Range Speaker
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This 4 Ω model specifies 20 W rated power and a response extending to 22 kHz at −10 dB. Its two-lug frame differs from the four-slot FR 10.
Typical applications
- Vehicle audio installations
- Compact built-in music systems
Full specifications
| Rated power | 20 W |
|---|---|
| Maximum power | 30 W |
| Nominal impedance | 4 Ω |
| Frequency response (−10 dB) | 100–22000 Hz |
| Mean sound pressure level | 86 dB (1 W/1 m) |
| Opening angle (-6 dB) | 122°/4000 Hz |
| Excursion limit | ±4 mm |
| Resonance frequency fs | 150 Hz |
| Height of front pole-plate | 3 mm |
| Voice coil diameter | 14 mm |
| Height of winding | 2.5 mm |
| Cut-out | 94 mm |
| Net weight | 0.2 kg |
| D.C. resistance Rdc | 3.7 Ω |
| Mechanical Q factor Qms | 6.5 |
| Electrical Q factor Qes | 1.99 |
| Total Q factor Qts | 1.52 |
| Equivalent volume Vas | 2.2 l |
| Effective piston area Sd | 52 cm² |
| Dynamically moved mass Mms | 2.4 g |
| Force factor Bxl | 1.7 Tm |
| Inductance of the voice coil L | 0.35 mH |
| Terminals | 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-) |
| Temperature range | –25 to 70 °C |
Dimensions and drawings

Dimension drawing · Open original image
Installation and cabinet guidance
Allow for a 94 mm panel opening and a 115.5 mm fixing pitch. Leave room behind the speaker for the magnet, terminals and wiring. Optional grilles: 4640, 4642 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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