First off i am going to list my equipment,
2 12" Kicker L7s subs in a '7th order custom bandpass box ( I do not know exact porting volumes) but port is huge.
1 Kicker zx1500.1 amp.
1 Kicker zx350.4 amp for inside speakers.
Alpine 9884 Head unit
jl audio 6x9s for back
Kicker 4x6 speakers for front
2 kinetik batteries ( one under hood one in trunk)
all 0 GA wiring besides 4 channel amp has 4 ga wiring
All connected to my front battery.
Have big 3 correct with 0 GA wire fused.
System was fine when i had no 4x6s and a 4 channel amp i recently got installed.
Ever since we installed the speakers and 4 channel amp, the inside speakers has been cutting off and coming back on randomly and sometimes fading back in. Seems to happen after about 10 minutes of playin. When they cut off, the subs still hit. They cut off and on random but a lot.
Then i hear this thumping from the subs. for example, i would have my system turned on and if i pause it and turn volume from 0 to 1 it will thump, if i brake, it will thump, if i switch on head lights it will thump. The thump is not too loud but its loud enough to notice it and ask wtf.
What i did,
Re sanded and re grounded mostly all connections. Checked RCA cables but im not sure to tell if they are bad but what does happen when i plug them into RCA inputs on amp, i can hear like microphone type noises and the thumping when wires are touching or are inserted in the inputs on amp. Also heard weird noise from subs when playing songs at normal loud level like another soft thumping bass beat is playing in the background. Normal level for me is 14/35 on headunit. Sometimes il go up to 18.
another thing is i have engine whine but i think its due to rca and power wire lined up together, i have to switch either one opposite form each other correct?
Im stuck on this crap. I dont know what to do. Im already sending the amp back to kicker for repair because i have strong feelings its the amps RCA input thats fucked up. Its the new 2010 model zx1500.1 amp and im sure the soder job is crappy since its victim of being poorly built due to mass production quality loss these days but who knows, we'll see.
My head unit is what im thinking is next to replace. I had it for almost 3 years and the first 8 months i had it, the lights went out on it but it shows the screen and the screen lights so its fine.
As for the inside speakers cutting off i am stuck, is it the 4 channel amp? or could it be the wiring? My buddy did it but i cant contact him lately to ask him questions.
I bought the amp in like new condition used from c-list from some lady that had it in her RV that she sold. The amp works. so i don't know if its the amp.
Any suggestions? Help?