Visaton SL 87 WP 4 Ω
Water proof 8 cm (3.3") full-range loudspeaker with a transparent plastic cone and rubber sealing ring. High mean sound pressure. Optimised for voice and signal output. Magnetically shielded. Properties: Plastic: Mylar (Membrane)
| Brand | Visaton |
| Model | SL 87 WP 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) | 87 |
| Frequency response | 180 Hz – 10000 Hz |
| Resonance frequency, fs (Hz) | 270 |
| DC resistance, Re (Ω) | 3.8 |
| Mechanical Q, Qms | 6.91 |
| Electrical Q, Qes | 3.14 |
| Total Q, Qts | 2.16 |
| Equivalent volume, Vas (l) | 0.37 |
| Effective piston area, Sd (cm²) | 41 |
| Moving mass, Mms (g) | 2.1 |
| Force factor, BL (T·m) | 2.68 |
| Voice coil inductance, Le (mH) | 0.47 |
| Linear excursion, Xmax (mm) | |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 20 |
| Cutout diameter (mm) | 80 |
| Mounting depth (mm) | |
| Cone material | |
| Magnet material | |
| Weight (kg) | 0.27 |