Visaton BG 20 8 Ohm, 8 Inch, Full Range Speaker

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Product photographs and manufacturer drawings. Images are not to scale.
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The BG 20 combines an 8 Ω load with a dual-cone design and 92 dB sensitivity at 1 W/1 m. Choose the enclosure to suit the application: its lower frequency limit depends on the cabinet.
Typical applications
- Vocal and guitar monitors
- Electronic organ and keyboard cabinets
- Midrange sections in PA systems
Full specifications
| Rated power | 40 W |
|---|---|
| Maximum power | 70 W |
| Nominal impedance | 8 Ω |
| Frequency response (−10 dB) | fu–18,000 Hz; lower limit depends on cabinet |
| Mean sound pressure level | 92 dB (1 W/1 m) |
| Opening angle (−6 dB) | 45°/4000 Hz |
| Excursion limit | ±6 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 |
| Cut-out diameter | 184 mm |
| Net weight | 1.3 kg |
| DC resistance (Rdc) | 6.2 Ω |
| 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 |
| Terminals | 4.8 x 0.8 mm (+)/2.8 x 0.8 mm (-) |
| Temperature range | –25 to 70 °C; contact us for use in extreme temperatures |
Dimensions and drawings
Installation and cabinet guidance
Cabinet options:
- 30 litre sealed cabinet: fc 82 Hz, Qtc 0.96.
- 30 litre bass-reflex cabinet with a BR 15.34 port: tuning frequency 42 Hz.
- 50 litre bass-reflex cabinet with a BR 15.34 port shortened to 7 cm: tuning frequency 42 Hz.
Cabinet and port components are not included with the driver.
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