I have a 04 ralliart with a pioneer avic-n1 deck, a rockford t10001bd amp powering a t115db 15 inch rockford sub I had a RF p5002 amp powering it before and it was cutting so i got the t1 now its still cutting and they say I need a new battery maybe a cap..anyone come across this before cuz i dont really take ultimate electronics word for anything anymore.

 

Prolly just need a cap, it keeps a more constant flow of power.... try it out, it will probably fix your problem.

 

what impedance are you running the sub at? Even if you're at 4 ohms, 500 watts is still probably a little much without a cap. Are your lights dimming when the bass is pounding? If so, you'd probably need to get a cap.

I've never run that much power on stock batteries. The most I ever did was 350 watts @ 2 ohms, and that was just fine with a stock batt, no cap.

 

I took it in to them warrenty and all so I dont know what its running at im pretty sure its at 4ohm and he charged my batt and it worked fine at low volume I cranked it up and all the lights in the car dimmed bad but he said a cap would only be like putting a bandaide on it and i needed a beefier battery in it I think the amp right now putting out 750 rms

 

and never let ultimate elec or best buy mess install anything nothing but probs

 

Agreed. One more thing...make sure they check the alternator, I have heard of stories when a bad alternator can't reproduce enough power quickly enough to fill the battery back up. If that's working fine, just go get an optima battery, and you should be set.