amp turns on and off until it gets warm

i have 2 amps installed one is pushing 2 rockfordfosgate 10in woofers with a 4 channel amp and the other one is pushing 4 5x7's eclipse speakers it is to a 4 channel amp, the one pushing the door speakers cuts in and out until it gets warm then doesn't do it any more

any help with this would help thanks

WOW do you think that u might do a little troubleshooting first.

How is the amp hooked up?

Where are the remote wires comming from? and the power wires? Be detailed if you want more help

ok from the deck i have 2 sets of rca's going to a crossover then from there i have one rca going out to the sub amp which is bridged into 2 channels then one rca going from the high and mid into the other amp and then a speaker hooked up to each channel.remote wire comes from the deck and power wire from batterey

thanks

I think that you might of missed what I was asking

The remote wire comes from your deck right?

Than goes to what amp?

How do you get your other amp to turn on?

You need to find the source of the problem and you are nowhere even close to finding it yet . The problem could be the cd, the crossover or the amp. You need to start eliminating equipment to find the problem. To me it sounds like a cold solder joint, thus when it warms up it makes a better contact, this could be anywhere in the audio chain.

Start by bypass the crossover  all together, run the "faulty" channel direct from the cd player, if the problem goes away the problem should be in the crossover. If it does not go away, next step.

Keep the crossover disconnected. Turn all built in crossovers on the amp and if applicable on the cd player to off, no lp or no hp. Take the rca from the front amplifier and plug it into the sub amp, if the problem still exists it should be the sub amplifier, but more work is necessary to find out. If the problem does not exist plug the sub rca into the front amp, with moderate volume only, not loud, does the front amp now start to cut out, if not the problem is not the cd player, but should be the other amp, if the front amp is now cutting out it will be the cd player or the sub rca wire.

To verify the rca cable as the cause, swap in a new rca cable on the sub rca channel, is the problem there or not, plug it into both amplifiers to check, if the problem is ther on both amps it is the cd player.