Ok, straight to the point. Wiring up a Kenwood 600W amp. Attach everything but the speakers to see if I have power. Click of the key, amp is on/LED lights up. Ok, turn off car, hook speakers up to the amp. Click of the key, nothing. This is the third amp now. The first 2 were visoniks, which I knew were junk anyways, so I blamed it on the amp. But now, I know I have a working amp (well at least I hope its still working). Any ideas as to why it just would stop working? I unhooked the speakers and tried again and still nothing. All wiring still sound. All fuses OK. I've hooked up many a car stereo for friends and myself in other cars and never once had a problem, espically not this strange of a problem.
Why do people bang their heads against the wall over and over again doing the same thing and expecting a different result? After the third amp I think it's safe to say that the problem is external, but the proper trouble shooting would have concluded this on the first amp.
You should let us know what proceedures you have gone through already so we know what to recopmmend.
Amplifiers need:
Power
Ground
remote
signal
You should verify all these things with a VOM. If the source of the signal is the OEM, it's very possible that it has load-sensing outputs. If this is the case, there is a circuit that mutes the amp outputs if the circuit does not detect the proprer impedance. You don't mention the source so I am not sure on this.
Use the VOM to check these things. Make sure that what is not there is there and everything will work fine.
Well, in my defense, the first two amps were Visionik. I have all things listed accept for remote I believe. I have replaced the remote wire, but still nothing. And no, there was no burnt electrical smell. Since I did not do the original wiring of the deck (already there when I bought the car) I am going to assume it has something to do with that, or the deck itself. The deck is one of those cheap Sony Xplod decks. Maybe I'll just rewire and upgrade. I know it sounds like I don't know what I am doing, but I have wired more than a dozen stereos for people with great sucsess. This was the first time I've ever run into any type of problem. Thanks for the replies though.
For starters, make sure you a) unhook the neg. battery terminal, as mentioned, b) start off with volume, gains, etc... turned all the way down (on HU and Amp), c) check for shorts at the speakers (as mentioned), d) after ensuring that all wires are hooked up correctly (power from + terminal to input on amp, remote lead from HU to amp, ground from output on amp to chassis, speaker + to amp + (same with -)) and from there, turn up the volume on your HU to where you normally listen to it (a little over actually) and then slowly turn the gains on the amp up (until you hear distortion (provided you can actually get some sound from your speakers; once you hear any distortion, turn the gains down slightly from that point). Not only should everything be hooked up properly, but you'll even have properly set gains (within reason).
Also, if the amp has a built in x-over, make sure its crossing over the proper freq. (My amp has a HP/LP x-over that is simply a button I push).
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