MulitMeter an Amp??

[ThumpinTitan 10+ year member]

Can you Meter an amp to see the power it puts out?

Sorry for the lame question, im new to the Digital Meter World

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[forceww 10+ year member]

Yes. Take a DMM and turn it to DC voltage. Then stick the postive and negative in the positive and negative terminals on your amp channels. Turn you system up to what you usually listen to it at and play a test tone. I.E. download a 50 hz test tone on ROE and play it. Then record the voltage that it reads out. Take that voltage and square it. then divide it by the impedance and thats your wattage. For example, you turn the system on a 50 hz tone to the volume you listen to it at, you measure the voltage to be 20. You then square it so 20x20 equals 400. If you sub you have wired to the amp is wired to 2 ohms you take 400/2 so you amp is pushing 200 watts. The opposite of this is how your supposed to set your gains on your amp //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[ThumpinTitan 10+ year member]

Yes. Take a DMM and turn it to DC voltage. Then stick the postive and negative in the positive and negative terminals on your amp channels. Turn you system up to what you usually listen to it at and play a test tone. I.E. download a 50 hz test tone on ROE and play it. Then record the voltage that it reads out. Take that voltage and square it. then divide it by the impedance and thats your wattage. For example, you turn the system on a 50 hz tone to the volume you listen to it at, you measure the voltage to be 20. You then square it so 20x20 equals 400. If you sub you have wired to the amp is wired to 2 ohms you take 400/2 so you amp is pushing 200 watts. The opposite of this is how your supposed to set your gains on your amp //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Cool, thank you very much sir!! will be trying this soon

 

[SmokeEater850 10+ year member]

Okay so I did this and I came up with 648. I was under the impression my amp only did 600 @ 2 ohms and thats at 14.4v, which I'm sure I'm no where near... Does that mean my gain is too high?

If I am trying to set my gain with a DMM and get 600 watts, Do I need to get it to where the DMM reads 30v since I'm running a 2 ohm load?

Figured I'd add this here rather than start a new thread about it... Hope this is ok.

 

[dman4486 5,000+ posts]

Okay so I did this and I came up with 648. I was under the impression my amp only did 600 @ 2 ohms and thats at 14.4v, which I'm sure I'm no where near... Does that mean my gain is too high?If I am trying to set my gain with a DMM and get 600 watts, Do I need to get it to where the DMM reads 30v since I'm running a 2 ohm load?

Figured I'd add this here rather than start a new thread about it... Hope this is ok.

if you calculate 648 then yes the gain is too high.....

 

[Haunz 10+ year member]

Yes. Take a DMM and turn it to DC voltage. Then stick the postive and negative in the positive and negative terminals on your amp channels. Turn you system up to what you usually listen to it at and play a test tone. I.E. download a 50 hz test tone on ROE and play it. Then record the voltage that it reads out. Take that voltage and square it. then divide it by the impedance and thats your wattage. For example, you turn the system on a 50 hz tone to the volume you listen to it at, you measure the voltage to be 20. You then square it so 20x20 equals 400. If you sub you have wired to the amp is wired to 2 ohms you take 400/2 so you amp is pushing 200 watts. The opposite of this is how your supposed to set your gains on your amp //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Even if you meter was set to AC like it should be you arn't going to get anykind of an accurate reading...

 

[tommyk90 5,000+ posts]

Even if you meter was set to AC like it should be you arn't going to get anykind of an accurate reading...

x2

You need at least a clamp meter AND a DMM to even get somewhat close of a readout.

The DMM needs to be set to AC volts, not DC volts.

An amp takes in DC volts and coverts that to AC volts.

 

[ThumpinTitan 10+ year member]

Figured I'd add this here rather than start a new thread about it... Hope this is ok.

Its coo man, the more info put out there in less Threads is Great!!

 

[qkassidyw 10+ year member]

It won't give you a completely accurate reading but it is a GREAT starting point, then adjust it by ear (shouldn't need to too much)

And turn the meter to AC Volts like mentioned above.