Speaker Mute circuit for power Amp

[steevo]

Has anyone got an effective circuit for a power on, speaker mute circuit for a power amp, i have no space so it has to be simple.

Cheers
Steevo

[nigelwright7557]

Originally posted by steevo
Has anyone got an effective circuit for a power on, speaker mute circuit for a power amp, i have no space so it has to be simple.

Cheers
Steevo

Do a search, this has been threaded numerous times.

[steevo]

Thanks, forget it, had a good look, there aint any.

[BobEllis]

Take a look at http://hafler.com/techsupport/pdf/DH-500_amp_man.pdf. The protection circuit is small except for the relay and easy build on perfrboard. Modifying it for use in another amp amounts to changing the rail resistors.

[mosfets]

Originally posted by BobEllis
Take a look at http://hafler.com/techsupport/pdf/DH-500_amp_man.pdf. The protection circuit is small except for the relay and easy build on perfrboard. Modifying it for use in another amp amounts to changing the rail resistors.

Bob, check the link, it is wonky. Yet it is there on the Halfler site. Perhaps its just me.

[steevo]

The Link doesnt work/exist any more

[farl]

http://hafler.com/techsupport/pdf/DH-500_amp_man.pdf

[BobEllis]

Thanks, Farl. What I like about the circuit is it also protects (at least tries) the speakers against amp failure. It clicks the speakers off if significant DC shows up on the input, too.

[boraomega]

Everything related to my "OMNI-protector" can be found in another tread. Follow this link:
http://www.diyaudio.com/forums/showt...777#post649777 and several consecutive posts to find everything that is necessary including one simplified explanation of how it works!