I've got a vibe monoblock 4 amp (2800w) and the wiring in the car is fine, I've troubleshooted this with a 12" vibe active sub and all works fine.
I've got 0guage wire >> 4 guage to fit in the terminal.
When connecting 12v power wire, there is a spark on contact and the power light stays off and the fuses didn't blow.
After I looked inside I saw there was no burn marks or broken parts. I'm not an expert in electronics but took a quick volt meter and had a glance around and was seeing a figure of 0.23? (May have been -0.23, can't remember)
When I tried wiring it all up again, now when I connected the power to the 12v terminal, it sparked and then the fuses blew.
The fuses are 3x 30a
Anyone have any ideas, I've attached some pictures of the circuit board, check www.rlmedia.org/amp/