sub tuneing

[500000watts 10+ year member]

I am pretty sure he is talking about setting the gain...
Take the total power you will be putting out (RMS rating, not MAX) and multiply it by the load the amp will 'see', (what your speakers will be wired to, represented in ohms.) Then take the square root of that number..

Get a DMM (digial multi meter, can be had for $20 at any hardware store) and put the probes in the amp's terminals. Turn on a 40-60Hz test tone at the highest volume you will play the stereo (NOT the highest volume capable of the unit), and adjust the gain until you get the number that you figured out earlier.

It's easy. If you don't get it, it's not the ADD, it's stupidity.

im trying to figure out how to set it up so i can do that? ^

 

[500000watts 10+ year member]

is it posible to use the multi meter to see how many watts im puttin out of my amp?

 

[creyc 10+ year member]

is it posible to use the multi meter to see how many watts im puttin out of my amp?

If you're amp is hooked up to a bunch of light bulbs/resistors/heating coils, then yes. Just find the voltage and square it, then divide that by the load your amp sees, in Ohms.

Speakers are a bit different however because they have a different resistance at every frequency, so you wont get an accurate measurement if you use that method on a speaker. ^

 

[500000watts 10+ year member]

so can anyone tell me what mode i need to set the multi meter to in order to find the number i calculated?