ok I have an spl 2000 watt amp powering a 12 inch w7. Its been good for about two months then just stopped working. I looked at my amp and the protect light is on. Everytime I unplug the RCA cables, the light turns green but as soon as they are plugged back in it goes red. I've changed wires, tried connecting to my component speakers, checked everything on my amp. I still can't figure out whats wrong with it. Its all hooked up right so I'm guessing its either me amp or the RCA outputs on my hu. I also have a capacitor hooked it up too. If anyone can give me some insight as to what is wrong I would be very thankful

 

The light goes green when you unplug the RCA's?

What happens when you unplug the RCA's from the deck, but leave the them plugged into the amp?

 

What model of SPL amp?
What type of fuse is in the amps power lead, [type and amperage]?
Do you no longer have the owners guide? 94

 

if I leave it plugged into the amp and pull it out of the hu it stays green. Only when its pulling current. And its the phantom series with the original fuses. I dont have the owners manual. Someone said that my ground could be pulling g current from my RCA. So to just try to move my ground

 

Definitely check your amps ground, it should be connected to the floor pan of the car, using a seat, seat belt or other machine bolt/stud and nut going into the cars floor pan, the cap should be grounded to the same spot].

I am not talking about the fuse(s) that are in the amp, I am talking about the fuse that is, [or should be] on the amps 2ga power cable, [by the batt.].

If the amp ground is bad and the amp is turned on, the amp will "try" and get it's ground from the RCAs signal ground and they are very small thin, low current traces on the circuit boards of the HU and amp, and will blow like fuses if more then an amp or so, [maybe less] of current is passed through them, your amp can draw over 100A, and probably draws more then a few just at an idle.

The traces in the HU are generally "thinner" then the ones in the amp and are normally the ones that burn, but I have seen them go on the amp and not on the HU and even on both the HU and amp.

An amp ground must never be disconnected, [or go bad] when the amp is on, it almost always causes damage, most commonly burnt signal ground traces in the HU.
If you have not already, plug the RCAs into another set of the HUs RCA outputs, after you have confirmed that the amp ground is good. 94

 

its a 100 amp circuit breaker. I'm thinking what your saying is probably the case. I'm gonna hook up to another hu and see whats up. Thanks for the info