did I short something out?

audiotroubles
10+ year member

Junior Member
I just recently installed my sub and amp and capacitor. Before I did the install, the stereo sound worked fine for the speakers in the doors.

After installing the amp, cap, and sub, the stereo turns on fine (it's a navi unit and it shows everything), but I have no sound. If I turn it all the way up I can hear a faint sound coming from the passenger front speaker, and the sub makes a little sound when I turn up the gain.

I uninstalled the amp and cap and sub and the stereo still just has a very faint amount of sound at the front passenger side, but that is it.

Does anyone know what might have happened?

 
Pioneer AVIC-N2 head unit

with the earlier setup I had, everything worked fine, I installed the amp for the sub to the rca jacks at the head unit and everything worked fine, later I decided to go with a more powerful amp, louder sub and a stiffening capacitor, and can't get any sound from the speakers after I installed these. Before I installed the higher powered stuff, everything worked fine and I was able to hear the stereo sound from the stock door speakers fine, but once I installed the new setup I can't get any sound from the speakers (unless I turn it all the way up and then I hear very faint, very distorted sounds coming from the speakers)

not sure what the question about speaker level input means

I also uninstalled the new setup (cap, amp, and sub) and I still can only hear very faint sounds from the passenger side front speaker only.

 
never seen back to the future? lol

so are your door speakers running off an amp or the HU?

do the subs work like they should?

go back and look at ALL your wiring. my guess is something isnt connected.

 
The only thing that I installed is the sub, amp, and cap.

The speakers in the doors are just the stock ones connected directly to the stereo with no aftermarket amp.

I think maybe that when I installed the cap it did something to the speakers in the doors.

The reason I got the cap is because in the amp install instructions, they recommended it. Do you think that this happened because of the cap? I haven't tried to install the sub without the cap, because of the door speaker problem. I have all the amp and cap wires unplugged now and I will probably need to just install new door speakers.

Maybe the head unit is having problems and not the speakers. As mentioned before, the speakers in the doors worked fine before I installed the new setup. I have a different head unit that I can plug in to see if the speakers play through that. I guess that's my next step. Hopefully it's just the head unit and with the spare one that I put in I can get it going.

Also, everything is still somewhat open to be able to see the wiring and everything is plugged in. I didn't install new door speakers, just the sub, amp for the sub, and the cap for the amp for the sub.

 
check all the wiring for the headunit. it sounds like the ground wire is loose so double check that. are you the person who installed the headunit or did a shop do it?the reason i ask is you may have knocked a wire loose when you removed the h.u. to connect the rca cable without knowing

also the cap did not cause your problem , what he meant was caps are useless in car audio and are a waste of money.

 
It's very probably you disconnected the speaker OEM harness when installing the RCAs on the HU. Sometimes they are seperate from the main wire harness and it may have fallen behind the dash and you can't see it. Check to make sure the wires coming from the HU labeled as your front speakers are connected to your OEM wires. But did you even remove your HU? It sounds like all you did was replace the existing amp (and reuse the existing RCAs) and also install the cap.

Since the HU turns on it doesn't appear as if you shorted it when connecting anything. But the fact that your HU amp and the RCA for the subwoofer out doesn't work is odd. Did you double check the audio settings to make sure the subwoofer out option is turned on? That would take care of one of the problems.

Caps do have specific instructions on how to charge them before you connect them (hopefully you followed this).

 
It turned out to be the head unit. I was having other problems with the navigation stuff on it and I think there is something wrong with it internally. I remade the harness to connect to the replacement head unit that I have and everything works fine now.

I followed the capacitor instructions on charging it, using a resistor and such, but now that everything works again, I probably wont use the cap. I have since bypassed the capacitor and will take it off of my amp rack when I get time.

Thanks everyone for helping me try to pinpoint the problem.

 
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audiotroubles

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