I have a Alpine CDA-9813, MRD-M300 (Mono) pushing a Pioneer TS-W254F 10" Sub (nominal impedance is at 4 ohms).

Recently I had to disconnect the battery, thus losing all the parameters stored in my amp. I had the amp installed at a shop a year ago, so I don't know how to work with this thing at all.

I've been playing with the controls, but I still have almost no bass. I read the manual and tried to follow, but I still don't know what I'm doing.

Any help would be greatly appreciated.