About using the 500 watt car amp as an inverter through at 12 volt to 220 volt transformer. The 500 watt car amp is primaraly designed to work into a 4 ohm load per chanel.
500 watts at 4 ohms is at around 45 volts. Ohms law EXE Devided by R = Watts.
The car amp rating was given as total power most likly for 2 chanels.
Another thing to keep in mind about CAR AUDIO. There are "NO" laws governing specs none zip doda there ain't any.
Your amp may do 500 watts or it may do 100 watts. Curenly the worlds most powerfull car amp does an acual 10,000 watts and that is trure actual RMS power.
This amp is from Earthquake the model PW-10000. We sell these. We use 4 of these in our record holding compitition SPL car ( a 78 ford curier).
Weve acctully clocked this amp at 13,344 watts into a 1/2 ohm inductive load.
The call these amps "Digital". There design is much like inverter and car speed controls.
I drive an 85 ford ranger. It is all electric. The curtis speed control is about 12" long 6" wide and 3" tall. Its rated 400 amps at 120 volt This is 48000 watts of control In a very small package.
Its a kik to drive,no gas bill.
JK TAS Jerry
BTW TAS is for The Audio Source Of Salem. We do car adio and mobile electronics.
JK TAS Jerry