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Please help!! Full audio system replacement issues

584 views 6 replies 3 participants last post by  jstnmckee  
#1 · (Edited)
I had a full audio system installed in my non Bose 2023 Colorado TB at a local shop.
They recommended and installed Audio Dynamics everything... all existing speakers and a dual 10" sub enclosure. 2 AD amps and AD dsp.
Since day 1 of the install I've had a slight hum and loss of audio in the driver's side dash and door speaker it was very random and sporadic at first but has gotten increasingly worse. Now, a little over a year since the install it's almost constant during the first 15-20 minutes of driving the truck, then the humming stops and the audio is fine.
I've had it back at the installers shop on numerous occasions and they can't seem to remedy the situation, I was told that they have tried several combinations of load resistors trying to remedy the situation and keep the audio constant in those two speakers but nothing seems to help.
I must add that I know nothing to very little about car audio.
My installer has pretty much stated they have zero ideas on how to remedy the situation, so I'm hoping someone reading this will have some useful information on how to fix this issue.
My turn signal sound and in call phone volume cuts out when the speakers begin the buzzing/dropping audio......ANY AND ALL HELP will be greatly appreciated!
I almost forgot to add that if I crank the volume it remedies the situation but at a lower volume the audio is in and out and replaced by the humming for about the first 15 minutes of starting the truck.
 
#4 ·
I used AudioControl AC-LGD 20 load resistors, which internally are 5watt16ohm sand cast resistors, but my older DSP didn't like the signal to be knocked down that much, and my volume suffered, so I swapped them out for 5watt4ohm sand cast resistors. No issues and blinker and phone and nav volume are fine. I have almost 600 watts of front stage, I'd hear it if there was an issue.

ETA: You can try my fix, but they need to use an Oscope before and after each component to isolate the issue.