BG 20 - 8 Ohm
Art. No. 3020
20 cm (8") full-range speaker with tweeter dome. High efficiency. Suitable for full-range units as vocal or guitar monitors or as a mid-range unit for full-scale or musicians' PA systems.
Typical applications
- Midrange unit for full scale or musicians' PA systems
- Vocal or guitar monitors
- Fullrange speaker for electronic organs and keyboards
Recommended cabinets
| Volume/Principle | BR-Channel | fb | fc/QTC |
| 30 l/closed | - | - | 82 Hz/0,96 |
| 30 l/bass reflex | BR 15.34 | 42 Hz | - |
| 50 l/bass reflex | BR 15.34 (length 7 cm) | 42 Hz | - |
Technical Data
| Rated power | 40 W |
|---|---|
| Maximum power | 70 W |
| Nominal impedance Z | 8 Ohm |
| Frequency response | fu–18000 Hz |
| (fu: Lower cut-off frequency depending on cabinet) | . |
|---|---|
| Mean sound pressure level | 92 dB (1 W/1 m) |
| Opening angle (-6 dB) | 45°/4000 Hz |
| Excursion limit | +/−4 mm |
| Resonance frequency fs | 38 Hz |
| Magnetic induction | 1,2 T |
| Magnetic flux | 380 µWb |
| Height of front pole-plate | 4 mm |
| Voice coil diameter | 25 mm |
| Height of winding | 8 mm |
| Cutout diameter | 184 mm |
| Net weight | 1,3 kg |
| D.C. resistance Rdc | 6,2 Ohm |
| Mechanical Q factor Qms | 3,47 |
| Electrical Q factor Qes | 0,51 |
| Total Q factor Qts | 0,44 |
| Equivalent volume Vas | 110 l |
| Effective piston area Sd | 214 cm² |
| Dynamically moved mass Mms | 10 g |
| Force factor Bxl | 6,1 Tm |
| Inductance of the voice coil L | 0,8 mH |
| Temperature range |
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