Anyone can help why no bass? Seems everything is good. I tried in the menu but nothing. Any idea? JBL
If all else fails disconnect the 12v for a few minutes. This will revert your stereo back to original settings... If that doesn't work, it's time to test your speakers and if they're good, it's time to replace your deck or amp if there's no loose connections.
Deck also means head unit, which also means the thing that the touch screen and knobs are attached to.
We found the problem. The problem was the speaker wires was changed. So - + and +-. And thats why was no bass.
