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Old 29th November 2008, 10:14 PM   #1
steevo is offline steevo  United Kingdom
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Default Spekaer Mute circuit for power Amp

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
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Old 29th November 2008, 10:49 PM   #2
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Default Re: Spekaer Mute circuit for power Amp

Quote:
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.
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Old 30th November 2008, 12:28 AM   #3
steevo is offline steevo  United Kingdom
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Thanks, forget it, had a good look, there aint any.
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Old 30th November 2008, 01:19 AM   #4
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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.
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Old 30th November 2008, 01:53 AM   #5
mosfets is offline mosfets  Canada
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Quote:
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.
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Old 30th November 2008, 09:40 AM   #6
steevo is offline steevo  United Kingdom
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The Link doesnt work/exist any more
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Old 30th November 2008, 10:33 AM   #7
farl is offline farl  United Arab Emirates
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http://hafler.com/techsupport/pdf/DH-500_amp_man.pdf
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Old 30th November 2008, 12:23 PM   #8
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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.
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Old 30th November 2008, 02:30 PM   #9
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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!
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