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Thumbnail Filmstrip of BF 37 - 4 Ohm Images
Visaton Speaker Driver - BF37 - 4 Ohm 3.7 cm / 1.5" Fullrange Speaker
Art. No. 2260
Characteristics and Sound Properties
3.7 cm (1.5") fullrange speaker with a wide and balanced frequency response and very good low range reproduction. With powerful Neodymium driver and high membrane excursion limit, optimised for small vented enclosures/enclosures with a passive radiator.Suitable for applications where slim construction and good music and speech reproduction are required.
Typical Applications:-
- Flat TVs
- Info terminals
- Other compact devices speech and music reproduction
Technical Specifications
| Rated power | 5 W |
| Maximum power | 8W |
| Nominal impedance Z | 4 Ohm |
| Frequency response (fu: Lower cut-off frequency depending on cabinet) |
100-20000 Hz |
| Mean sound pressure level | 74 dB (1 W/1 m) |
| Excursion limit | ±3.4 mm |
| Resonance frequency fs | 155 Hz |
| Net weight | 33.1 g |
| DC resistance Rdc | 3.8 Ohm |
| Mechanical Q factor Qms | 5.11 |
| Electrical Q factor Qes | 0.86 |
| Total Q factor Qts | 0.74 |
| Equivalent volume Vas | 0.06 litres |
| Effective piston area Sd | 6.2 cm2 |
| Dynamically moved mass Mms | 1.0g |
| Force factor Bxl | 1.99 Tm |
| Inductance of the voice coil L | 0.17 mH |
| Connections | Solder lugs |
| Protective system | IP X4 *) |
*) IP protection class for front side when built into a sealed enclosure (gluing of the loudspeaker might be necessary)