Loud feedback noise with aftermarket amp.

[Tazzman]

I installed an amp and sub tied into one set of the speaker wires going to the factory subwoofer and when the music is off and the car is not asleep I have had a loud feedback sound come out of the sub and set off the alarm on the car. I have also heard the sound when I first get in the car when the car was sleeping and I woke it up. I used a basic line converter https://www.amazon.com/dp/B07VKFSLKN?psc=1&ref=ppx_yo2ov_dt_b_product_details and i know it will keep the amp on as long as the car is awake but something is causing a signal to be sent through the amp. Has anybody else experienced this or read about it happening to anybody else?

 

[Lashlee]

First thing that is suspect for me is the basic line output convertor. I would look into a quality version (like an Audio Control piece) and verify that the wiring you've used is the correct signal for the amp.

 

[Tazzman]

First thing that is suspect for me is the basic line output convertor. I would look into a quality version (like an Audio Control piece) and verify that the wiring you've used is the correct signal for the amp.

Thanks for your thoughts on my situation! I feel everything is wired right and all the components are working properly because the base sounds really good. I was going to put a relay that could be ontrolled with a remote to keep the amp off when not in use but while waiting for the relay I found that pausing the music when leaving the car has stopped my problem from happening since using that tactic.