Mono High Power Speaker Protection Circuit
A relay based, speaker protection PCB with low parts count and low footprint.
It is for single channel (mono) so you need 2 pcs for stereo amplifier.
A heavy duty relay is used so it's compatible with high power audio amplifiers.
Extra safety feature: The speaker pin of the relay is shorted to ground when the relay is off. So if there's a fault on the amplifier, any DC arc that might form in the relay contacts will be redirected to ground instead of going into the speaker.
1pc Speaker Protect Blank PCB
BOM and schematic via email.
Through hole, common parts for easy assembly.
Heavy duty relay, NE555 Timer
Faston tab connector for high current modular connection.
PCB Size: 2" x 2.6"