I just installed a new Pioneer Avic F-Series Navigation Unit into my TL-S. The problem is now the music sounds a little crappy when ever i go past like 15 on the volume level. I also have 2 12-Inch subs installed but i also have the stock sub installed just not connected. As for the stock amp i believe it is still connected but I'm not sure if that is whats causing the problem. Also still have the stock speakers but that was never a problem before i installed the new deck. i just need to figure out what it is thats causing this crappy sound to come out. Please Acurazine, pimp my ride! Uhhh I mean please help me out with my problem.

 

Do you have the "loud" or "boost" button selected on the headunit?

If not, you have subs pushing out the bass so turn the bass pretty much off coming through the speakers and turn the treble up.

If you want to figure out which speaker/s are causing the issue turn off your subs and fade and adjust to each speaker seeing how they individually sound to make sure they are not blown.

 

alright i'll try this out thank you