- Published in issue 7/1995 on page 115
Loudspeaker protection in cars
The output stages of many car radio/cassette players have no switch-on delay for the loudspeakers. This causes annoying clicks when the radio is switched on or off. Usually, the output stages are remotely controlIed via switching voltage outputs of the radio. One of these outputs, Vs, is used by the present circuit to switch on the amplifier before the loudspeakers and to switch off the loudspeakers before the amplifier.