hie all... well i hv jst installed my home use subwoofer which is of 220v in my cultus...a battery of 12v ovcourse....
and the result is just awesome.. see in the pics below dat hw dis become possible...
just bought a sda500 500watt dc/ac power invertor....
giving the pure sine wave.. and high efficiency....
i hv aslo put a 450watt load on dat invertor but not nw....
whole setup cost me abt 1800rs...:P...
and dis setup is easily portable for both car and home....
chk dese pics :)...





