Hey all, i recently picked up a us amps usa 400x and the specs are 2x200@2ohm
And 1x400@4 ohm,but on the amp it says 1 ohm stable but i cant find specs to support that?
Is this amp actually stable @1ohm stereo and 2ohm bridged? im confused.....

Any help is welcomed

 

The 400 was stable to 1ohm, the 400x is not.

http://www.usamps.com/old_site/products/inv/usa-400.htm

 

no sherlock,thats why im asking,my 400x says 1 ohm stable right on it. i have searched and found what you found.thanx fr trying tho.

 

NICE!! you'll be getting a lot of help!

 

why not contact the company that designs the amp, and ask them? with the amount of people who don't bother to read the manual that came with tier equipment, then ask obvious questions, I don't think it's too 'out there' to post a link to the products website... if it says right on it that it's 1 ohm stable, then why wouldn't it be?

not to be a smartass, but is it possible that you have a 400, and not a 400x? if it has "400X" printed on it, and you believe it to be a 400x, why wouldn't you believe that it's 1 ohm stable, since that's printed on there as well

Mark

 

US amps used the x designation for 4ohm stable amps. They might have used the wrong side cover from the regular 400 model on it.

So Mr Watson, the bottom line if it is the 400X then it is not stable to 1ohm just like the web site says.

Kinda like how the old chrysler town and countrys would say dodge caraven somewhere on the inside.

 

wasent trying to be rude,was just a joke, anyways even on the us website for the 400x specs the pic of the 400x you can see it says 1 ohm stable on it there too,so wrong side cover on that one too?hmmm

 

I would call and ask WTF....but my guess is both amps are 1ohm stable if the sticker says 1ohm stable...

looking up the data sheet for the outputs might be another hint

 

I dont know what web site you are refering to but the link I gave you only pictures the 400 and not the X.

 

USA-400 Only
One Ohm Stable
50 Watts x 2 into 4 Ohms
66 Watts x 2 into 3 Ohms
100 Watts x 2 into 2 Ohms
200 Watts x 2 into 1 Ohms
200 Watts Bridged into 4 Ohms
264 Watts Bridged into 3 Ohms
400 Watts Bridged into 2 Ohms
Available in Black or Chrome


USA-400X Only
Two Ohm Stable
100 Watts x 2 into 4 Ohms
132 Watts x 2 into 3 Ohms
200 Watts x 2 into 2 Ohms
400 Watts Bridged into 4 Ohms
Available in Black or Chrome


"(Specifications subject to change without notice.)"

You can believe what you read and hear, or not. It's up to you.
Best thing is to try it, then you'll know! Then let us all know how hot it gets!