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Discussion Starter · #1 ·
I am getting interference noise from my speakers.

My System consists of:
Sony DXMS 60 head unit
Biketronics radio install kit and controller
Hawg Wired Reference 400watt amp
2 Hawg Wired ZX 6.5" speakers in the fairing

I originally wired the setup using Low Level inputs (RCA to 3.5mm jack), and would get engine noise upon sart up and the tone would very with RPM so I checked my grounding (4ga wire from neg batt to radio cradle and a 4ga wire from cradle to Amp) at that time I added a ground wire from the radio to the cradle and nothing changed. I was fed up so I pulled the fuses and have not had a radio for the last year.

This week I decided to fix it before my 2500+ mile ride in 2 weeks. I replaced the RCA to 3.5mm adaptor thinking that it was bad, but that didn't fix it. So I dug around the garage and found the High Level harness and tried that but still have interference. Also noticed that I could faintly hear it even with the engine off.

Any help or ideas on what to check?
 

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I would ground the amp directly to the battery and see if that helps. Do you have any Day makers , or HID lights ?

Most say a shorter ground is better but a 2 foot run to the battery isn't very long. I grounded my HU to the chaise and the amp to the battery. Using low level connection to the amp. I have no interference at all. I also have HID lighting in there too.
 

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I would ground the amp directly to the battery and see if that helps. Do you have any Day makers , or HID lights ?

Most say a shorter ground is better but a 2 foot run to the battery isn't very long. I grounded my HU to the chaise and the amp to the battery. Using low level connection to the amp. I have no interference at all. I also have HID lighting in there too.

What he said!????



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Discussion Starter · #4 ·
I would ground the amp directly to the battery and see if that helps. Do you have any Day makers , or HID lights ?

Most say a shorter ground is better but a 2 foot run to the battery isn't very long. I grounded my HU to the chaise and the amp to the battery. Using low level connection to the amp. I have no interference at all. I also have HID lighting in there too.
The ground from the battery to the cradle and Amp to cradle share the same stud, so essentially it is direct to the Battery. Part of me thinks the problem is the head unit, reason being I was on a police escorted ride the day before I pulled the fuses and I was getting crazy loud tones/beeps as the cops would pass.
 

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The ground from the battery to the cradle and Amp to cradle share the same stud, so essentially it is direct to the Battery. Part of me thinks the problem is the head unit, reason being I was on a police escorted ride the day before I pulled the fuses and I was getting crazy loud tones/beeps as the cops would pass.
You better make sure all paint is removed where your grounded. I just prefer a straight run the the battery.
 

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I had the same problem once, bought a filter off of ebay, no more problems since. 4 channel rca ground loop isolator. It's blue, cost about $15.
 

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Discussion Starter · #10 ·
I have found that the noise is coming from the Sony head unit or the Biletronics adaptor. After trying all sorts of things I bypassed the Amp and hooked up the speakers to the radio had no left channel and the whining persist. So then I hooked up my IPod directly to the Amp, it has never sounded so clean. I may just leave it hooked up this way instead of buying a new radio.

Thanks for the ideas!
 

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I have found that the noise is coming from the Sony head unit or the Biletronics adaptor. After trying all sorts of things I bypassed the Amp and hooked up the speakers to the radio had no left channel and the whining persist. So then I hooked up my IPod directly to the Amp, it has never sounded so clean. I may just leave it hooked up this way instead of buying a new radio.



Thanks for the ideas!

Then it's probably your radio that isn't grounded properly.


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