Stereo Problem!!!

[brianmc]

I've got a frickin problem that I can figure out. All of a sudden all my speakers started cutting out every time my sub hits. Here's all the things I've gone through to try solving this... Tried a different head unit, replaced front speakers and tweets as well as rear speakers, replaced all rca cables, replaced all crossovers, my local shop swapped out my 4 channel to make sure it wasn't a bad solder joint, checked every connection you could imagine....
The last bit of info I've got is I can turn the sub down either through the head unit or the bass knob and crank it as high as I can stand and everything is kosher, but once the bass starts hitting all the speakers start to randomly cut out again. WTF!?! I've been messing with this for the last week and no progress. Does anyone know what I might be missing??? Any advice, even the stupidest little thing would be far beyond appreciated!

[Demon]

Sounds like something is grounding out possibly, speaker wires on the sub maybe? Maybe the amp is drawing so much power that it's causing everything to cut out.
I've had that problem before, it came down to a blown speaker was grounding out which caused the HU to enter protection mode to save itself. That was running off the HU itself, not an amp but it could be the same problem. Maybe the wires got pinched or something and you can't see it. Other than that, I'm stumped.

[D-Rock]

what is your setup. how many speakers, how many amps, how are they wired, what gauge is your wiring,......need a little more info.

Without knowing much more I would check for a voltage drop at the amp running the speakers that are cutting out. It may be time to upgrade your alternator and battery.

[brianmc]

My setup includes two amps mono Memphis 1100 and a 4 channel Memphis 480. The sub is a 12" Memphis Mono. I've got a Memphis 1 farad cap as well as a Kinetic 1800 power cell. The car battery is only a few months old. I failed to mention I did check the voltage at the amps as they're working and I'm not experiencing any loss (substantial anyhow, no more than 0.5 volts ). I'm running 4 ga from battery to cap/cell/ sub amp, and 8 ga to the 4 channel. Front speakers are a brand new set of Memphis component and the rear is a new set of Memphis 6x9's. All replaced after the problem started. Hopefully that helps a lil.

[D-Rock]

If your getting no voltage drop, and you replaced your rca's and your head unit, then really check out that ground good. take it off and make sure its getting a really good ground. If thats all good, i would say its your amp. For some reason either the vibration of the subs hitting, or the small voltage drop, is causing it to cut out.

try it without the cap too.....

amd make sure your amps are getting enouph amperage. Just cause they have voltage doesn't mean they have sufficient amps going to them.

[brianmc]

Well, I tried hooking up the amps directly to an external battery power and grounds, and I'm still having the same issues.... Grounds are perfect...

[Lil mag 2.7]

sounds like a broken rca cord, throw another one over the seats n hook it to the sub out on the head unit

[Lil mag 2.7]

shoot i just went n read that post again n it did say u already did that, sorry my baddd. well uv gone through alot of swappin parts, iv gotta lean towards the alt, whats left??? not much

[Lil mag 2.7]

check the tinsel leads on the subs n be sure they havnt arc together,they can do this n still play low vol,but than when u turn it up it goes out.

[DirtyPana]

I would try this. Disconect your subs and test the ohms on it. If it is a 4 ohm DVC, you should get 4 ohms at each coil. If you have anything lower, Like 1-0 ohms, you have a shorted out coil. this could be causeing the problem. Also, just to be quick, you can check the ohms of your sub at the wire. Disconnect it from the amp and check it there. You should have very close to whatever you have your subs wired to ohm wise. Hope that helps!

[WideTurn]

I would see if you have a friend with a sub and try hooking theirs up to see if that's the issue. The sub itself may have something touching inside. Just a guess but figured I'd throw it out there.

[gstr6800]

I had an issue similar to this a few years ago. It turned out to be the fuse block. It had a bad solder joint that would not allow high current to pass. I happened to find it when I used a set of needlenose pliers to short the fuse to the copper cable. I saw the fuse clip move a little. Repaired it and it worked. If this is not your case, I would start at the battery and work my way back. Make sure you have the appropriate size cable to handle your load. Based on the size of your amps, you should be running 0ga cable. One other trick to try is to get some jumper cables and connect up a second battery in parallel to see if you need to get a larger battery.

[brianmc]

I actually just replaced my subs. Went from 2 12's to one 12 mojo. Had the same problem before. I also tried swapping out the fuse block today, but it didn't seem to make a difference. I'll still pull the sub this evening to check the ohms! Maybe it will get me somewhere!?! Thanks for the suggestions!

[Ren504]

What ohms is your sub? Dual or single voice coil? Just give me the sub name model number along with the amp info.


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[DirtyPana]

The only other thing I can think of right now is that you may not have a very good ground. Check your ground on the amp and cap. Check all your power connections. Like gstr6800 said, start from the battery and work all the way through it all to the amp. Also, did you charge the capacitor before you hooked it up?