The loudspeaker protection circuit for transistor amps is a different development of the ” Delayed and Loud Speaker DC Protection Circuit ” application I have previously shared .
Features of the Speaker Protection Circuit; the speaker detects dc voltage leaks that may damage the speaker, disconnects the speaker connection, has an amplifier short circuit (overcurrent protection), overtemperature protection with thermostat and LED warning.
-R and L pro locations must be connected to the emitter end of the tran from the + supply line in the transistor amps, before the output resistance. In other words, it is suitable for 2 + 2 trile amfil.
-Res resistances 12v for the relay to be calculated in 12v not exceed the election,
– The gnd line in the supply source must be taken from the starboard if the amplifier supply is different.
– Those who want to make a gnd connection from the screw pad for metal boxes can use it by jumping to the earth symbol located near the place where ‘ Earth ‘ is written and behind the LEDs.
-Term is a thermostat which is normally connected to 60-70 degree current (ie cold). If not used, it should be short-circuited.