Okay so there's just 1 channel that is extremely lower then all my other channels. I wanted to make sure it was the wires so I used a different rca chord and it worked with all the other channels except the one that still had low sound. Not the wires.
Now I wanted to make sure it wasn't the amp since its brand new. (Alpine pdx f4) so i unplugged it from the channel that wasn't working from the back of my stereo and plugged it into a different channel that worked and then tested all 4 channels on the amp and they all produced the right level of sound on a different channel through the deck. Then when i plugged it into the the 1 channel on the stereo it was low again. So im almost 100% positive it is the Deck. Could it possibly be that im hooking up something wrong or is my deck just faulty?