Rms of a ? amp

 

Silver Member
Username: M0nkeyman692

Post Number: 355
Registered: Feb-07
is there any way to find the rms rating of an amp that doesnt say anything about it anywhere on it. its a nice amp that i have on a 12" sub box its for my house and its decently loud but nowhere on it it says the brand or rms rating. not even a serial code.. so if you know any way to test the rms rating that would be great
 

Silver Member
Username: Tatonka

-[Team Audib...

Post Number: 894
Registered: Mar-07
My guess (and I'm probably completely wrong but its worth a shot) is that you would do it in the reverse way of setting your gain.

Play tones and adjust your gain to where it starts to distort by ear, then just turn it down a little bit. Then hook up your DMM to your outputs on the amp, unplug the sub, and then play a 50hz tone. Read the voltage it puts out then just use that to find how many watts rms it is giving you without distortion.
 

Silver Member
Username: Press1

Yuba City, CA USA

Post Number: 230
Registered: Nov-04
You could always open it up and look at the circuit board...most of the time it will have the manufacturer's name and sometimes the amp specs.
 

Gold Member
Username: Nd4spd18

Northwest PA

Post Number: 3232
Registered: Jul-06
" and I'm probably completely wrong "

Lol yeah. You cant use speakers as load when benchtesting.
 

Silver Member
Username: Tatonka

-[Team Audib...

Post Number: 904
Registered: Mar-07
Oah well, I learned something new then :-)
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