Would it possible to operate a car head unit and a 400W amp off of a 430W PSU?

 

Are you considering using it inside the automobile, or outside?

 

It's a setup in my garage and/or room

 

Would it possible to operate a car head unit and a 400W amp off of a 430W PSU?

Yes they are ideal...

 

Car amp draw a lot of current at 12V. In yr case for 400W it will be 33Amps.
Are u sure the PSU won't go into protection when the heavy bass starts thumping ?

 

Power amps aren't 100% efficient, so the 400 watt amp may draw, for example 10-20% more power than it "puts out". (depends on the particular amp). So if you try to drive it steadily at max output it may overload the supply.
But hopefully you won't need it that loud in your room.
Do you have neighbors, parents ??

 

I would be more inclined to use a 12V automotive starting battery and a ~10A 14V PSU to keep the battery charged...

 

Hello,

Is the power supply 12 Volts dedicated?
Or is it a PC powers supply?

You might want to look for an CB powe rsupply like the one in the link:
http://www.ebay.com/itm/ASTRON-RS-5...omm_Device_Power_Supplies&hash=item43c1607874

Bertus

 

I would be more inclined to use a 12V automotive starting battery and a ~10A 14V PSU to keep the battery charged...

great idea,, this would also get rid of a lot of the noise floor class a-b, and d amps tend to have naturally,, add a psu and the "hum" might get annoying..

 

I would be more inclined to use a 12V automotive starting battery and a ~10A 14V PSU to keep the battery charged...

+1 You could use s smaller motorcycle battery which can be bought for about $50 and puts out about 220A peak crank current.

 

Itll be a dedicated psu, and is noise floor audio distortion?

 

Itll be a dedicated psu, and is noise floor audio distortion?

No, noise is noise.

 

Could i use two exact psu together?

 

I am leaning towards the small motorcycle battery idea, would I have to worry about the amp-hour rating? Or just the cold cranking amps? Because with my cheap PSU the hum is getting to be irritating