US Amps vlx-400

[Andrew2006 10+ year member]

i would liek to know a little about this amp before i buy it, its a US Amps vlx-400

like whats the ratings and all on it, i was going to get it off this guy i know

for 800.00 and i use going to use it on my RD Audio HW v.2 and its a dual 2 ohm

someone please help me

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[Jh8909 10+ year member]

I think it pulls upwards of around 400 amps at full tilt and is basically a 4k amp. but your getting great class a/b power. gotta have the electrical to support it though.

 

[MakeshiftAudio 10+ year member]

It's class A/B so expect about 50-60% efficiency. Does well at lower impedances. Lots of power at .5 nominal. It will get fairly warm. Very nice amp otherwise. Extreme sound quality. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[Andrew2006 10+ year member]

i got stock electrical right now just building a little at a time so i plan on upgrading my electrical system and how man batteries would i have to run if i got a 200+ amp alt and anyone know what its rated at 1 Ohm i tried to look it up on usamps.com but no luck but is 800.00 worth it?

 

[Andrew2006 10+ year member]

bump

 

[Jh8909 10+ year member]

dude...amp guts

 

[Andrew2006 10+ year member]

forgot about that website thanks

 

[Jh8909 10+ year member]

lulz brainfart.

 

[Violence. 10+ year member]

will pull about 450-500amps at .5ohm. i talked to greg at us amps about these. 1/2 ohm all day long with no issues. class a/b boards. long as hell. will do around 2600@.5 ohms maybe a touch more. rated at 12.4v. very clean power but you will need a very strong electrical for it. bridged is left most negative and right most positive IIRC.

 

[Andrew2006 10+ year member]

lulz brainfart.

yeah haha sorry about that

will pull about 450-500amps at .5ohm. i talked to greg at us amps about these. 1/2 ohm all day long with no issues. class a/b boards. long as hell. will do around 2600@.5 ohms maybe a touch more. rated at 12.4v. very clean power but you will need a very strong electrical for it. bridged is left most negative and right most positive IIRC.

thanks for that info man

 

[AKDropem 10+ year member]

Must Have Electrical or you will burn up power supply and then you will have an $800 paper weight or you can sell it to some one who knows how to fix it.

-----Consider Multi-alternator set up------------

If you are having troubles deciding on an amp you can plug and play go with Class D

 

[Eagle 10+ year member]

I ran the same amp daily for 1 year on my treo CSX 15. I got 2800rms @ 1ohm running it daily! I had 1 200amp alt. yellow top under the hood and 4 stinger sp-1000's in the trunk! Ran fine never got hot on me at all! Did 5600rms out of it on 16v in my buddys van Wired to 0.5ohm The amp is rated 2400x1@1ohm@ 12.8volts! hope that helps! The only down side to this is my Sundown 3000d is more powerful and is half the size!

 

[Mr. Slate 10+ year member]

Must Have Electrical or you will burn up power supply and then you will have an $800 paper weight or you can sell it to some one who knows how to fix it. -----Consider Multi-alternator set up------------

If you are having troubles deciding on an amp you can plug and play go with Class D

Bad advice. I beefy alternator is all you need.