Dmm -rms output

[audiobaun 5,000+ posts]

Is there a thread, or a formula to be able to read off of a dmm for true rms of an amplifier.Anyone know how to do this?I thought Ive read at one time, and not finding the information any longer.Thanks

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[Kangaroux 5,000+ posts]

RMS output you need at least 2 things, a dmm and a AC clamp meter. Clamp the positive speaker wire coming out of your amp with the meter, and use the DMM to measure the AC voltage at the speaker terminals. Multiply the 2 values you get to get your RMS. Divide voltage by current to get your impedance rise

 

[audiobaun 5,000+ posts]

RMS output you need at least 2 things, a dmm and a AC clamp meter. Clamp the positive speaker wire coming out of your amp with the meter, and use the DMM to measure the AC voltage at the speaker terminals. Multiply the 2 values you get to get your RMS. Divide voltage by current to get your impedance rise

I thank you sir..I knew it wasnt a very hard method,and i think i do have an ac clamp as well..Thank you..I will give it a try over the weekend

 

[Kangaroux 5,000+ posts]

I thank you sir..I knew it wasnt a very hard method,and i think i do have an ac clamp as well..Thank you..I will give it a try over the weekend

When you come to test it try and roll up the volume a bit, don't just do it at max volume. That way you get a more accurate reading

 

[audiobaun 5,000+ posts]

When you come to test it try and roll up the volume a bit, don't just do it at max volume. That way you get a more accurate reading

Ok ...alright,will do that..I thank you