can i do my own Bench Test

[406er 10+ year member]

soo what do i need to do a bench test. my amp is to old for MTX have any paper work. i asume ill need a Oscope and a DMM and some test tones

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[JimJ 5,000+ posts]

You're on the right track...the biggest cost is going to get a 120VAC power supply with enough current capacity to run the amp. 100A 12VDC bench supplies are not cheap.

 

[msimon 10+ year member]

Don't forget non-inductive resistors. As far as power supplies, I find that a car battery works fine. But than again, you can't find out what your amp would do at 14.4 volts with the battery.

 

[Toxic Tuan 10+ year member]

To bench the true instantaneous power of an amp ...you'll need a voltmeter and a AC Clamp meter.

 

[Bake 10+ year member]

Assuming you have everyhing you need to take the measurements why not bench it in the car at 14v?

 

[JimJ 5,000+ posts]

Assuming you have everyhing you need to take the measurements why not bench it in the car at 14v?

The idea of using a bench supply is that the supply voltage generally is more stable (if you have a sufficient PSU, of course //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif), doesn't have the voltage drop that you incur in the vehicle.

 

[_DjScrew_ 5,000+ posts]

i always wanted to do this also. made a post about it a long time back. where can you purchase the proper power supply?

 

[UndercoverPunk 5,000+ posts]

i always wanted to do this also. made a post about it a long time back. where can you purchase the proper power supply?

You most likely can't afford one...

Dominick Iraggi will do bench tests at no charge... all you have to do is pay the shipping..

 

[Bake 10+ year member]

A psu like that is not gonna be cheap. I was just offering that as opposed to a stand alone battery.

 

[_DjScrew_ 5,000+ posts]

You most likely can't afford one...
Dominick Iraggi will do bench tests at no charge... all you have to do is pay the shipping..

understood, i was just wondering out curiousity.