Is there any company that makes transformers to change 120VAC (wall outlet) into 12VDC (like a car battery) that can put out at least 40 amps? I need it for the speaker system i built. It is literally car speaker components, amplifer, and sub woofers that i made boxes for and i move around different places like parties and cookouts. In the past i have used a regular automotive battery charger hooked up to a car battery and ran the power cables to it. Without the charger plugged in the system drains the battery within 30 min or so.
As far as i can tell, it has to be more than 40A but it can be less than 50A. The fuses in the main power wires blow when i put 40s in there, but hold with 50s–it also depends on the amount of bass in the songs too it seems. Ultimately i just want something that looks prettier than a grungy battery with jumper cables hooked to it.