Need to know how to wire my system ...I have the infinity reference series 611a I was told it was a mono block but it has two channels on the exterrior...also I have two 12 inch MTX thunder dual voice coil subs ( not sure if there the 4500 or 5500) ...neways I need to know how to wire this up to be the loudest and I have 4gage and 6 gage wire also several feet of 10 gage . Installing today need to know. Also I'm getting ride of my JL w1 12s ..(2of them) for these MTX. Did I make the right decission .

Bridge the sub in parallel. Connect the positive from one voice coil tithe positive on the other voice coil and then to the positive on the amp for bridge mode. Then do the same to the negative. It will put you at 2 ohm mono in bridge mode.which will give you full power the app can give around 312 watts.

Haynes manual or chilto if not got to infinity parts counter and they can help

Yes, it will be a complete amp instalation.

If you put a different amp in its place with all wires run the same than your Infinity ampis blown. It is now a large paperweight.

Placing the speakers next to each other face down, you will notice that the connection points run in sequence +- and +-. Now connect the - (negative) from the one speaker, to the + (positive) of the other speaker. Now connect the open + from the one speaker and the open - from the other speaker to your amp. Your amp should have a bridging indication. On the connection points of the amp, you should see a mark pointing to the first + and the last -. That will be your bridge and thus utilizing the full potential of your amplifier

check your fuses. Also check the power wire connection to the amp and then the ground source maybe move that if there is paint under it. check fuses on the amp. Check ohm load to the amp from the speakers.

remote wire? check amp fuse maybe weak ground sometimes location looks good but is weak

if your amp. work in bridge you can attach + 1st channel and + 2st channel to your sub woofer. by series 2 ohm you have 4 ohm sub woofer.

Yes. When you run two-two ohm subs to a monoblock amp its on the same channel meaning there ran parallel, and that makes it one ohm and most mono-blocks won't read one ohm. Are you popping fuses in the amp?

are you running a large ground wire directly to the battery negative terminal?