Using car amp+subwoofer for home use

[Tohdj]

Hi all,

 

i've a set of car amp and subwoofer which i don't intend to install in my car.

 

so i'm thinking of using them to enhance my mini-hifi's sound effects.

 

my questions is the amp needs 12VDC. i can put a transformer to step down from 240VAC to 12VDC, but what is the current to supply? AFAIK, transformers have a power rating...and P=VI.

[Headshok]

check your 12V power source how many amp it is. u can get the 22A one from sim lim tower, that should be just nice for a normal amp.

[Tohdj]

hi,

 

my amp does not have any label which indicates the power supply rating. only got a 12V label...and a 800W sticker on the top. It is a 4 channel amp.

 

Is it possible to calculate the max current which this amp can take using these values?

 

thanks in advance.