Rivendell61 Posted May 3, 2005 Share Posted May 3, 2005 I have a multimeter which I use to adjust bias, etc on my tube amp--but beyond that I have zero understanding of how to use it. How do I measure DC voltage on speaker outputs for a SS amp? I need REALLY basic info like which probes to place on which terminals..... Do I measure with vol. at various positions? Etc... Thanks! Mark Quote Link to comment Share on other sites More sharing options...
dragonfyr Posted May 3, 2005 Share Posted May 3, 2005 Can you tell us what it is you are trying to do? We may then be able to better provide methods to achieve your goals... Quote Link to comment Share on other sites More sharing options...
Rivendell61 Posted May 3, 2005 Author Share Posted May 3, 2005 I had raised the question of DC on speaker outs in 2 Channel because of comments I'd read on AA about DC on D-Class amp speaker outputs. I have one amp (SI) which buzzed loudly on turn on--so I wondered if this might be the cause. And two new ones I thought I'd check before hooking them up to speakers. But basically I am just being curious, and would like to know how to check--and see if they are within normal limits. Mark Quote Link to comment Share on other sites More sharing options...
3dzapper Posted May 3, 2005 Share Posted May 3, 2005 Mark, Check across the red and black binding post for each channel. Put your red lead on the red post and the black on the black. With the amp powered up, ideally, there will be zero volts DC. Don't worry about a reading of say 0.05V, some meters don't like to read 0.00. Rick Quote Link to comment Share on other sites More sharing options...
Rivendell61 Posted May 3, 2005 Author Share Posted May 3, 2005 Terrific Rick! Thanks for the help-- Mark Quote Link to comment Share on other sites More sharing options...
D-MAN Posted May 3, 2005 Share Posted May 3, 2005 DC won't cause humming. DC will also burn out vc windings. DC isn't the problem unless you are burning up speakers. AC causes humming. DM Quote Link to comment Share on other sites More sharing options...
yaffstone Posted May 5, 2005 Share Posted May 5, 2005 D-man is right, so set the multimeter to V AC and see what you get. Also check what is going into the amp before blaming the amplifier. Quote Link to comment Share on other sites More sharing options...
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