Visaton SL 87 WPM 4 Ω
Waterproof 8 cm (3.3") fullrange speaker with a transparent plastic cone and rubber sealing ring. High mean sound pressure level and compact design. Optimised for voice and signal output. *) IP protection class for front side when built into a sealed enclosure **) 1 m height of water, 18.5 h
| Brand | Visaton |
| Model | SL 87 WPM 4 Ω |
| Kind | Full range |
| Nominal diameter (mm) | |
| Impedance (Ω) | 4 |
| Rated power (W) | 20 |
| Maximum power (W) | 30 |
| Sensitivity (dB, 1 W/1 m) | 89 |
| Frequency response | 200 Hz – 5000 Hz |
| Resonance frequency, fs (Hz) | 290 |
| DC resistance, Re (Ω) | |
| Mechanical Q, Qms | |
| Electrical Q, Qes | |
| Total Q, Qts | |
| Equivalent volume, Vas (l) | |
| Effective piston area, Sd (cm²) | |
| Moving mass, Mms (g) | |
| Force factor, BL (T·m) | |
| Voice coil inductance, Le (mH) | |
| Linear excursion, Xmax (mm) | |
| Excursion limit, Xmech (mm) | 1.5 |
| Voice coil diameter (mm) | 20 |
| Cutout diameter (mm) | 80 |
| Mounting depth (mm) | |
| Cone material | |
| Magnet material | |
| Weight (kg) | 0.24 |