Ok well let me just say I've been having a rather weird problem for some time now. I want to give all possible information so that you guys can rule some things out so I'll start from the beginning.
I installed a car audio system a little over a year ago that consists of an audioque 1200d hooked to a fi q 12" and a jl 300/4 bridged to some hertz hsk 165s. Now, for the first 8 or so months I had virtually no problems. System worked fine. Then my I blew my sub (from having the gain too high) and around this same time I noticed my speakers began cutting out intermittently. Now, this continued sporadically for some time. Sometimes, I would not have the problem for weeks and other times it would happen multiple times a day. Sometimes, it would even happen over and over repeatedly for a few minutes and then finally stop after maybe 5 or so minutes of doing this.
Now, I have just recently put my subwoofer back in and here are the key things to note:
-The subwoofer remains playing at ALL times (never cuts out)
-The RCAs should be fine, I actually had to switch them for other reasons a few months ago but I was having this same problem on the old ones
-My gains are now set correctly using a multimeter
-This problem still happens sporadically, it doesn't seem to matter if I'm playing a really loud bass intensive song or a nice acoustic song on a moderate level of volume. It seems to strike randomly. I've played very loud dubstep songs on my system for hours straight since putting the sub back in without experiencing the problem once and out of no where it might hit while I'm playing a song not even on max volume
-My car shows the battery voltage on a small screen up front and the problem seems to happen more when the volts are lower (high 12s - mid 13s). It rarely happens when my volts are reading at 14 or 15 volts.
-The few times (and I must note very few times because this usually doesn't happen) where it cuts out repeatedly for minutes on end, I notice the volts tend to drop low on my battery meter (never below 12.5 though).
-This problem frequently happens when the car is off and when it is off it will happen consistently and continuously once its starts
-Amp doesn't seem to be turning off at all and the grounds look fine (as far as I can tell).
Based on all this, I'm guessing its some kind of power issue. But why did it never happen for so long? And why does it seem to happen so randomly? You'd think that it would happen during really heavy bass drops, but all in all, it seems to make little difference how much output is coming through the speakers when it cuts. Also my alternator and battery are both fairly new (replaced both shortly after install of the system). Could this potentially be a remote turn on issue? Maybe the amp is just going off for very short durations of time (and due to this the light never goes off)? I'm using a wire soldered off another wire to turn on both amps (the sub amp has a wire coming from the headunit remote turn on and I soldered another one into the middle of this wire to turn on the other amp). It seems so weird to me though. Maybe it's because of my lack of experience with how electronics truly work, but the problem seems to be random at best. I have spent a lot of time trying to figure out and just can't seem to figure out what would be causing this.