i have an 07 tl type s im trying to put in one 12 power acoustik fubar and i hooked everything up to the factory stereo and i got my signal from the rear deck speakers but inoticed that when i have my car running and i have the volume on low i get a rumbling from my sub i already tried changing my signal source to the rear factory subwoofer and i also tried changing my remote but i still get the rumbling can anyone tell me what it can be

 

I would check your grounds,make sure your grounding to bare metal.Did you try differnt rca's ? Then turn the levels down on the loc.

 

You could be experiencing feedback. What happens is the sub produces pressure in the trunk which moves the rear speakers which produces a signal that is sent to the sub. I've also seen this happen when closing a door. Try getting the signal from the front speakers and see if the problem goes away.

 

i already tried changing the rca wire and my ground source i noticed that the rublimg changes with my rpms since it only rumbles when the engine is running once i get past 2000 rpm the rumbling stops and if i disconect the rca wires from the output cinverter it stops so it must be sumthing with the cars factory audio system im guessing

 

sounds like you have a power wire laying on top of your speaker wires going to the converter,or a striped speaker wire conducting with the body,or loc is just junk

 

i already changed the loc but il check my wires again

 

i also noticed the rumbling will stop if i open one off my doors or open the trunk

 

Thats odd

 

problem fixed it was the active noise cancelation microphone i had to disconnect it thanks to uncald4 !!!!