Amp benching

[Derek123 10+ year member]

where would you go to get an amp benched , if you can how much does it cost....

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[djjdnap 10+ year member]

her's a better question how can you do it yourself

 

[Derek123 10+ year member]

her's a better question how can you do it yourself

yea that would be cool also

 

[Gauntlet 5,000+ posts]

http://www.eatel.net/~amptech/elecdisc/measpwr.htm

 

[sundownz Pro Seller]

Get a good DC power supply, O-Scope, Voltage meter, Current Meter, and some test loads and have at //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

- Jacob

 

[djjdnap 10+ year member]

no resistors

 

[NCSU#1 10+ year member]

I followed the instructions on this web site http://www.conceptconcept.com/download/measurwatts.pdf. I measured the AC voltage across the speaker terminals, playing a 45 Hz sine wave test tone. I cranked up my amp until the clipping LED's came on. The result was 53 V. Following the formula P = Voltage squared / resistance, I get 936 watts peak. Myltiply by 0.707 gives me 662 watts RMS. I understand this is not the most reliable method of determining amp output, but I don't have an oscilloscope and I don't have a dummy resistor instead of the sub.

The sub I had hooked up for the test is a JL Audio 10W7. My amp is a PG MS-2125. It would be great if other people also used this method and we could all compare the results we get.

 

[slipknot87420 10+ year member]

can any one do this for me i got 69-71.2@ 60hz so can someone convert that to watts, it was at a 4 ohm load