I just got an Alpine 7893 HU, but i am unsure on how to adjust the interior speaker bass,(Not the subwoofer base). If anyone has an Alpine 7893 or 7892, i would appreciate it if you could tell me. Thanks.

 

look at your manual

 

If you a) don't have a manual or b) are too lazy to dig it out, here's a PDF of the manual

http://ecominet2.alpine-usa.com/html...da-7893_om.pdf

 

Two things you can do. Adjust the bass by using the frequency button directly under the volume ****. It is the button to the right of the tcorr button. Second, you can hit and hold the tcorr button for a few seconds to get the HPF and LPF crossover controls. You can set the cutoff frequencies from there.

Just repost if you want further details...