How to measure watts / wattage on my amp

[BrownVanMan 10+ year member]

I have a sony XM-404EQX it says 40wrms X 4 or 100wrms X 2 bridged....

http://www.crutchfield.com/S-AmLpwQ1twTS/p_158XM404EQ/Sony-Xplod-XM-404EQX.html?tab=other_items

I have a DMM now do i just check the amps being put out then convert it to watts? this is why i want to know

i have 4, 4 ohm 12" subs wired up for a 1 ohm load. The amp will easily power ALL of them and i have it brided on only the rear channels, not even using the fronts.

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[treadburner 10+ year member]

cant do it at 1 ohm

 

[smgreen20 10+ year member]

Yea, you'll have to go 4 ohms on a bridged channel w/that amp. I have a review somewhere on that amp, well actually its 5ch brother, and it did do about 25% more power then it's rated at.

This is not a power house amp, just a good and actually clean 4 corner amp.

 

[nineball 10+ year member]

I have a sony XM-404EQX it says 40wrms X 4 or 100wrms X 2 bridged....
http://www.crutchfield.com/S-AmLpwQ1twTS/p_158XM404EQ/Sony-Xplod-XM-404EQX.html?tab=other_items

I have a DMM now do i just check the amps being put out then convert it to watts? this is why i want to know

i have 4, 4 ohm 12" subs wired up for a 1 ohm load. The amp will easily power ALL of them and i have it brided on only the rear channels, not even using the fronts.

even if your amp could handle a 1ohm load you would only be giving your speakers, in a best case scenario, 50watts each. they would laugh at you.

 

[Kold_Killa 10+ year member]

And to determine the output of the amp you will need more than a DMM... you'll need a clamp.

That being said, you will need more than 40 watts per woofer... that is practically nothing for most 12" woofers.

 

[tEh ShOcKeR]

CL that POS and get a descent mono amp.