8.7 cm (3.4") fullrange speaker with balanced frequency response and high efficiency. For speech and music reproduction in electronic divices and vehicles.
| Rated power | 15 W |
|---|---|
| Maximum power | 20 W |
| Nominal impedance Z | 4 Ohm |
| Frequency response | 100–20000 Hz |
| Mean sound pressure level | 85 dB (1 W/1 m) |
| Opening angle (-6 dB) | 143°/4000 Hz |
| Excursion limit | +/−2 mm |
| Resonance frequency fs | 137 Hz |
| Height of front pole-plate | 3 mm |
| Voice coil diameter | 15 mm |
| Height of winding | 4.3 mm |
| Cutout diameter | 80 mm |
| Net weight | 0.21 kg |
| D.C. resistance Rdc | 3.5 Ohm |
| Mechanical Q factor Qms | 6.4 |
| Electrical Q factor Qes | 1.56 |
| Total Q factor Qts | 1.25 |
| Equivalent volume Vas | 1.3 l |
| Effective piston area Sd | 37 cm² |
| Dynamically moved mass Mms | 2 g |
| Force factor Bxl | 2.1 Tm |
| Inductance of the voice coil L | 0.2 mH |
| Connections | 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-) |
| Temperature range | –25 ... 70 °C |
Protective grille made of black plastics. Can be supplied painted in other colours on request.
- Suitable for: FR 87, SL 87 WPM
