Amplified speaker help

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Jan 16, 2013 | 04:58 PM

C-TownGlider26

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From: Cleveland, Ohio

Amplified speaker help

Evening all,

I just wanted to see if anyone here could throw out any ideas to try in order to fix my amplified speaker system I just put in. I have a soundstream pn4.5200 amp, ran KnuKoncept wiring kit (fantastic kit by the way, best I have ever used), used a Line output converter to get the stock speaker leads to RCA, then attached to focal ic 165 speakers. It is a 2013 Road Glide by the way.

Now that you know all the components, I hooked up the entire system and everything sounded amazing. Bustin eardrums at 1/2 volume. Anyways, I started to button everything back up in the fairing and as soon as I got the fairing back on, a loud screeching sound came from the speakers and has continued since. I checked the ground and there were no kinks as I ran the ground wire back to the negative terminal. I removed the ground from the battery terminal and tried it on the fairing mount to no avail. Long story short I went through the entire wiring and have narrowed it down to the outputs from the amp. When I move them around to a different position the signal clears momentarily depending on the exact position but I can not get it to stay clear.

If anyone has any ideas on what it could possibly be please post. The only other idea that I could possibly think is that the amp has drawn too much from the battery because it is a 500 watt amp and I left it running on battery power alone while I ziptied and put back on the fairing which did not allow the alternator to spool, which would explain why it began screeching so suddenly. I was thinking about getting the gas tank on and starting her up then check the results, but I would really be upset if the problem was not resolved and I would have to get the tank back off again.

Any suggestions are appreciated. Thank You

Jan 16, 2013 | 05:02 PM

UltraNutZ

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disconnect your RCA jacks. Does the screeching sound go away? If so you may want to look at the line level converters used.

Jan 16, 2013 | 05:08 PM

C-TownGlider26

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From: Cleveland, Ohio

Quote:

Originally Posted by UltraNutZ

disconnect your RCA jacks. Does the screeching sound go away? If so you may want to look at the line level converters used.

I disconnected the RCAs and the screeching sound persisted. That is why I believe it is at the speaker outputs, I checked all connections but the only ones that seem to change the sound are the speaker output connector from the amp to the speaker wire to the speakers.

Jan 16, 2013 | 05:19 PM

UltraNutZ

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From: East of the Sun, West of the Moon

disconnect your harness for the speakers from the amp.
disconnect all 4 speakers from the wires they're connected to
(if you have crossovers you'll want to disconnect those)
grab a DMM set it to continuity (beep) and test each wire in the harness that plugs into the amp to ground to see if one of the speaker wires is grounded out somewhere

or alternatively if you have a 12v test light connect the clip to a +12v source and then touch each pin in the harness that connects to the amp to see if it lights up.

Last edited by UltraNutZ; Jan 16, 2013 at 05:27 PM.

Jan 16, 2013 | 05:24 PM

UltraNutZ

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From: East of the Sun, West of the Moon

also for grins.. take a piece of wire long enough to reach from a good solid ground point and ground the RCA jacks to see what happens.

This most certainly sounds like a grounding problem to me.

Jan 16, 2013 | 05:37 PM

C-TownGlider26

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From: Cleveland, Ohio

Thanks UN. I will give that a try tomorrow when I get some daylight. For now all I can do is kick my feet up, tip a few back, and try not to worry about the cluster**** I'm in for tomorrow. I'll let you know how it goes.