HELP! Trouble with subs/amp on stock HU with HK
Okay so I had my amp and subs wired to my stock HK system and here are my problems:
-bass is amazing when IDLING but begins to get muddy and terrible as soon as I go above 40km/hr, exactly like what happens with my HK 6x9s - they used to distort once the car went faster than 40km/hr. I guess this has to do with the vehicle's speed sensitive volume control adjusting the signal on the fly.
-loud humming sound at idle
-LOC from the main stock amp -> RCA to aftermarket amp
-remote turn on from the HK mini-amp (stupid installer)
Why is the signal changing as I drive, just like with the stock HK 6x9s? Is this solely due to the remote turn on trigger from the HK amp, and can be fixed by tapping into the MAIN amp for the trigger?
What is causing the loud humming at idle?