Visaton FRS 10 WP 4 Ohm (Black), 4 Inch, Waterproof Speaker

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This black 4 Ω FRS 10 WP combines 25 W rated power with 90 dB sensitivity at 1 W/1 m. Its construction suits outdoor sound systems and installations exposed to saltwater. The front-side IP65 rating depends on correct installation in a sealed enclosure.
Typical applications
- Outdoor PA and weatherproof column systems
- Boats, ships and open vehicles
- Sauna speaker systems within the specified conditions
- Model boat audio
Full specifications
| Rated power | 25 W |
|---|---|
| Maximum power | 50 W |
| Nominal impedance | 4 Ω |
| Frequency response (−10 dB) | 90–19000 Hz |
| Mean sound pressure level | 90 dB (1 W/1 m) |
| Opening angle (−6 dB) | 64°/4000 Hz |
| Excursion limit | ±3 mm |
| Resonance frequency (fs) | 190 Hz |
| Magnetic induction | 1.0 T |
| Magnetic flux | 190 µWb |
| Height of front pole-plate | 3 mm |
| Voice coil diameter | 20 mm |
| Height of winding | 5 mm |
| Cut-out diameter | 92 mm |
| Net weight | 0.36 kg |
| DC resistance (Rdc) | 3.4 Ω |
| Mechanical Q factor Qms | 8.29 |
| Electrical Q factor Qes | 1.02 |
| Total Q factor Qts | 0.91 |
| Equivalent volume Vas | 2 l |
| Effective piston area Sd | 57 cm² |
| Dynamically moved mass Mms | 2.4 g |
| Force factor Bxl | 3.8 Tm |
| Inductance of the voice coil L | 0.2 mH |
| Colour | Black |
| Terminals | 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-) |
| Protective system | IP65 at the front when installed in a sealed enclosure |
| Temperature range | −40 to 120 °C |
| Low-temperature test | EN 60068-2-1: −40 °C for 96 hours |
| Low-temperature requirements | Germanischer Lloyd |
| Plastic flammability rating | PC plastic, UL 94 V-0 |
| Ball resistance | Ball-resistant component; suitability depends on the finished installation |
Dimensions and drawings
Installation and cabinet guidance
Use a sealed enclosure to provide the front-side IP65 protection. Seal the mounting joint and protect the rear from moisture; adhesive and a front cover may be needed to complete the seal. Match the fixing positions before drilling. Optional gasket: 2170.
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