WTF!? multimeter/gains problems

[RiceNotNice 10+ year member]

Alright dumb ? time. I downloaded some test tones and tried to read the voltage w/a multimeter, but no matter the freq, i get no voltage. the tone plays, but i get no readings on the meter, why?!

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[bonesninja 5,000+ posts]

your on the wrong setting on the multi-meter but i don't know the correct one but i'm pretty sure thats the problem

 

[DBfan187 5,000+ posts]

Did you set the DMM to read AC voltage? If not, you need to as music is AC.

 

[B@SSAN8OR 10+ year member]

also im sure you know to put it on the speaker outputs of the amp right. depending on the amp it should be around 40 v ac and up

 

[sumone 10+ year member]

as mentioned...

1. make sure the setting is on AC voltage. if there's multiple ones, use an appropriate range. take the square root of the (max rms wattage of the amp for one channel times the speaker/sub's nominal impedance) and that should be the voltage you should expect.

2. make sure the leads are secured on both ends (meter---amp speaker terminals)

3. make sure the dmm works. batteries may be good, but the dmm may not be. a good test to this is setting the dmm on just resistance/ohms, and touching the leads together. the resistance should read 0 ohms. if this works, voltage readings should most-likely work also.

 

[IgnoreMe 5,000+ posts]

yea for soem reason my friends amp does this too. no idea why either. his speaker amp reads on the dmm, the sub amp doesnt . who the hell knows lol