BF 45 S - 8 OHM

Overview

The BF 45 S - 8 OHM is a miniature full-range loudspeaker manufactured by Visaton GmbH & Co. KG. It features an 8-ohm nominal impedance and a rated power handling capacity of 4 W, with a maximum music load capability of 8 W. The unit utilizes a black aluminum diaphragm housed in a transparent plastic basket. Its frequency response spans from 90 Hz to 20 kHz, with a sensitivity of 79 dB at 1 W/1 m. The physical dimensions are approximately 4.5 cm (1.8 inches) in diameter.

Feature Summary

• Features a black aluminum diaphragm for balanced frequency response
• Housed in a transparent plastic basket with two mounting holes
• Designed as a compact full-range speaker for general audio applications

Applications

• Miniature audio reproduction systems
• General purpose loudspeaker integration
• Compact electronic device audio output

Procurement Notes

Verify the specific impedance variant required, as the BF 45 series includes both 4 Ohm and 8 Ohm options. Confirm that the 8 Ohm specification matches the target circuit design. Ensure the rated power of 4 W is sufficient for the intended application environment. Check RoHS3 compliance status if regulatory adherence is mandatory for the project.

Selection Notes

Select this component when a small form factor is critical alongside standard 8-ohm impedance requirements. The 79 dB sensitivity indicates moderate efficiency suitable for low-to-mid power amplifiers. Consider the 4 W rating against peak signal levels to prevent thermal damage. The rectangular or round mounting constraints should align with the available space in the enclosure design.

Part Context

This model belongs to Visaton's miniature speaker lineup, characterized by compact dimensions and versatile audio performance. The BF 45 series is widely recognized for its reliability in small-scale audio projects. The specific 8 Ohm variant ensures compatibility with standard consumer electronics and amplifier outputs designed for higher impedance loads.

FAQ

What is the maximum power handling capacity?

The maximum music load capacity is 8 W, while the continuous rated power is 4 W.

What is the frequency response range?

The frequency response ranges from 90 Hz to 20 kHz.