1800 watt amp with 4 gauge wire?

[ricksi30 923]

I think I might run it at 4 omhs that way i won't destroy my alt. and it won't be a true 4 ohms either cause "1 ohm" is really .7 ohm. Idk. I want to run it at full power but I don't want to destroy my car.

If it were me id run it at 1 ohm and back the gain off if necessary.