Tired, close to breaking things.

[mlstrass 5,000+ posts]

Probably using the antenna or RCA as the ground...

 

[Trepkos 10+ year member]

Probably using the antenna or RCA as the ground...

Great -.-

Could that particularly harm the 2-channel amplifier.

Im hoping that wiring the ground directly to the battery will help. Wired it to the distribution block, still getting noise but now the volume is of the music is extremely low even when high on the HU and theres no bass response...

 

[AcidicDreams 10+ year member]

Great -.-
Could that particularly harm the 2-channel amplifier.

Im hoping that wiring the ground directly to the battery will help. Wired it to the distribution block, still getting noise but now the volume is of the music is extremely low even when high on the HU and theres no bass response...

Well it shouldn't be coming on when the ground wire is disconnected and might be the reason you are introducing noise into the system. Check your wiring to make sure it's not grounding out anywhere... you can do this with the multimeter (upload a pic of the front of the multimeter and we might be able to help on how to do it).

Also remember all the settings are lost when the car/deck loses power....

 

[Trepkos 10+ year member]

Well it shouldn't be coming on when the ground wire is disconnected and might be the reason you are introducing noise into the system. Check your wiring to make sure it's not grounding out anywhere... you can do this with the multimeter (upload a pic of the front of the multimeter and we might be able to help on how to do it).
Also remember all the settings are lost when the car/deck loses power....

Should I check this by mainly taking the neg ends of the dmm and putting it on the RCA and a power source and same with the antennae or I can narrow it down by unplugging both sources and the HU ground wire and seeing the response.

 

[Trepkos 10+ year member]

I did a series of tests.

First I grounded the designated ground wire to the amplifier's grounding spot on the chassis of the truck. I unplugged the RCA's from the amplifier and also unplugged the circuit tester. Unfortunately the DMM's battery is dead for the moment.

The designated ground wire was showing a negative charge. The antennae plug-in was also showing a negative charge. The RCA's, unplugged shown no charge.

So I turned on the HU with the designated ground cable and RCA cables disconnected and the HU turned on properly. So I then disconnected the antennae and repeated the process and the HU did not turn on. So I took the ground wire and grounded it back to chassis of the truck and kept the antennae plug-in unplugged from the HU aswell as the RCA cables still unplugged and showing no charge. The HU started up properly with no squealing noise.

I then plugged the RCA's in and they immediately shown a negative charge on the circuit tester, both ends, started the engine and the squealing returned(antennae unplugged), so I unplugged the RCA cables and took the circuit tester to the RCA ports on the amplifier and they also presented a negative charge(both ends).

So I don't understand if the issue is that the HU is grounding into the amplifier, which shouldn't be happening. Is the negative charge of the amplifier's RCA ports a defect in the amplifier or is it working properly? Is the antennae suppose to be showing a negative charge(even when its unplugged)?

 

[Trepkos 10+ year member]

This is where I spliced and reconnected the ground coming from the HU to a spare wire that I had...(intertwined and bent). The other end of the blue wire is the location I have been hooking up to different ground locations.

The amplifier ground location and also the new HU ground location.

The RCA cables show a 12.00v+ charge on the DMM while plugged into the amplifier, they show no reading on the DMM when unplugged, the RCA ports on the amplifier do show a 12.00v+ charge on the DMM also shown. The positive end of the DMM is hooked up to the power cable going into the amplifier.

The antennae also shows a 12+v charge when the DMM is hooked up to it, unplugged or not(not shown). I was say that the HU is grounding out through the RCA cables for some odd reason. I didn't test the RCA cables on the mono amplifier side. The other door panel fits now, all loose panel parts have been successfully re-installed.

Several problems fixed, few remain(alternator whine solution, unbalance midbass in right door, purchasing new midbass and successfully wiring comp. system on the left door. Adjusting gains and settings on amplifier and perhaps it will all finally be done.

Anyone with any real idea of what is the problem with the alternator whine and how to fix the HU so it doesn't ground out the RCA's.

 

[AcidicDreams 10+ year member]

You need to do a continuity test on those wires to check if they are grounded out somewhere. I'm not sure how to do it with your MM though...

As for ideas though I'm a little stumped though I would say that ground is probably not the best option unless there is thick metal below the sheetmetal...

have you upgraded the chassis to battery ground wire yet?

This article:

http://www.termpro.com/articles/noise.html

has a testing procedure on troubleshooting alternator whine.

 

[mlstrass 5,000+ posts]

Have you tried grounding HU directly to the battery? You could also try a ground loop isolator. Like $10 at Radio Shack and just return it if it doesn't help...

 

[Trepkos 10+ year member]

Today I will try the ground to battery and the ground loop isolator option.

Aswell as contacting Phoenix Gold for replacement woofer options.

 

[AcidicDreams 10+ year member]

Today I will try the ground to battery and the ground loop isolator option.
Aswell as contacting Phoenix Gold for replacement woofer options.

Hold off on any filter or noise reducer. If it's all properly installed there is no reason it'll have noise. Rather than bandaid it fix it...

That procedure on the link I posted should help you get up and running...

 

[Trepkos 10+ year member]

Hold off on any filter or noise reducer. If it's all properly installed there is no reason it'll have noise. Rather than bandaid it fix it...
That procedure on the link I posted should help you get up and running...

Already followed that procedured, no luck.

 

[Trepkos 10+ year member]

Well, the ground loop isolator worked in eliminating the alternator whine but unfortunately there would be no sound coming out of the left channel with the ground loop isolator's RCA. But with the KnuKonceptz RCA cable, you can hear the vocals and other musical elements through the door speakers.

So I decided the issue may be that there was only one component set plugged into the amplifier and it was plugged on the right output, so I took the pioneer 6x8 and hooked it up to the amplifier aswell so that perhaps I would be able to hear the left side through it. No luck, instead it played the right signal through both speakers, so i hooked the KnuKonceptz RCA back and up and it played normal with the exception of the squealing.

Another new issue that may be connected or not with the alternator whine grounding issue is that the HU randomly turns off and back on when the subwoofers hit hard or the even just at random moments such as when the subwoofers aren't plugged in and it may restart in a series. I slapped the wires around a bit behind the HU to see if it was just a loose wire but the slapping had no effect. It was as if the HU was just randomly turning off for no reason.

I also turned the HU and did an elimination process to see if the HU was grounding out somewhere else besides the designated ground wire. So I first disconnected the ground with the amplifier on....no response....then the RCA cables....HU is still on....then the antennae...HU cuts off, so I plug the RCA cables in....still off....then I reconnect the ground...HU turns on.

I swear the problems get more and more weird with every day.

 

[goodstuff 10+ year member]

Well, the ground loop isolator worked in eliminating the alternator whine but unfortunately there would be no sound coming out of the left channel with the ground loop isolator's RCA. But with the KnuKonceptz RCA cable, you can hear the vocals and other musical elements through the door speakers.
So I decided the issue may be that there was only one component set plugged into the amplifier and it was plugged on the right output, so I took the pioneer 6x8 and hooked it up to the amplifier aswell so that perhaps I would be able to hear the left side through it. No luck, instead it played the right signal through both speakers, so i hooked the KnuKonceptz RCA back and up and it played normal with the exception of the squealing.

Another new issue that may be connected or not with the alternator whine grounding issue is that the HU randomly turns off and back on when the subwoofers hit hard or the even just at random moments such as when the subwoofers aren't plugged in and it may restart in a series. I slapped the wires around a bit behind the HU to see if it was just a loose wire but the slapping had no effect. It was as if the HU was just randomly turning off for no reason.

I also turned the HU and did an elimination process to see if the HU was grounding out somewhere else besides the designated ground wire. So I first disconnected the ground with the amplifier on....no response....then the RCA cables....HU is still on....then the antennae...HU cuts off, so I plug the RCA cables in....still off....then I reconnect the ground...HU turns on.

I swear the problems get more and more weird with every day.

Try swaping the rca isolators and see if one is bad...run wires for the H/u power and ground straight to the battery...check what your getting for volatge with a dmm before connecting. problamatic installs can be a real ******* inducer. keep at it...

 

[pilyin 10+ year member]

Somehow your head unit is grounding out through your antennae wire. I think that's what's causing your wine. Also, make sure your amp remote wire is hooked to your remote out. If your remote wire is connected to the wrong wire, that can cause whine also.

Also, if you unplug the amp (disconnect it), does your headunit still turn off and on? If not then I think you might have a power (lack of it) issue. Have you done a big 2 upgrade?

 

[Trepkos 10+ year member]

Somehow your head unit is grounding out through your antennae wire. I think that's what's causing your wine. Also, make sure your amp remote wire is hooked to your remote out. If your remote wire is connected to the wrong wire, that can cause whine also.
Also, if you unplug the amp (disconnect it), does your headunit still turn off and on? If not then I think you might have a power (lack of it) issue. Have you done a big 2 upgrade?

Actually my amplifier remote wire is connected to the red wire of the HU and the red wire coming from the wiring harness because the HU didn't specifically tell which wire was the remote wire and I tried every available wire(P.CONT, EXT. CONT) to see if it worked as a remote wire and it didn't. so I used the red wire. The on/off issue has seemed to gone away for some odd reason. I unplugged the antennae and hooked the HU up and the whine is still present. The remote wire coming from the HU is going to the mono amplifier and then another remote wire is coming from the remote port in the mono amplifier to the 2-channel amplifier.