Help Using DMM to set gains

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Apr 12, 2014 | 11:28 PM

ep120794

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From: california

Help Using DMM to set gains

Where do I put the probes from the DMM on this picture? Do I also need to unplug the rca speaker inputs from the amp?

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Apr 13, 2014 | 12:05 AM

acchd

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From: Charlotte Metro

Measure at speaker outputs at amp and disconnect your speakers.

Apr 13, 2014 | 12:15 AM

ep120794

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From: california

So is that the bottom picture where it says R CH (+ and -) and L CH (+ and -)? That 4 different holes. Where do the probes go?

Apr 13, 2014 | 12:58 AM

acchd

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From: Charlotte Metro

Quote:

Originally Posted by ep120794

So is that the bottom picture where it says R CH (+ and -) and L CH (+ and -)? That 4 different holes. Where do the probes go?

Yep that's right.

Apr 13, 2014 | 09:31 AM

ep120794

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From: california

Do I just choose either the L Ch or R channel and the the red probe in the positive and the black probe in the negative after pulling the speaker wire out of those posts and after disconnect the speaker inputs?

Apr 13, 2014 | 09:44 AM

AAWAV

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From: Las Vegas

Quote:

Originally Posted by ep120794

correct - opposite rd probe on neg and black on pos will work too... you are measuring AC, hence there is no positive or negative signal (actually there is but it is both!). you are measuring a "sinus wave".

Last edited by AAWAV; Apr 13, 2014 at 09:47 AM.