If you turn up the "loudness" (via menu - sound - loudness) you could turn up the bass very quick.

Or you create some presets in the EQ for yourself (See the manual for how it works - just take a little time to play with it. Then you'll be fine!)
You should be careful with the EQ-settings to boost the frequencies not too much (+12 or something) because it could cause distortion. Better set the highest level at 0 db and lower the frequencies you want to have more silent.

Generally the Equaliser is not a thing to make the music sound the way it should. You should adjust your amp and position/quality of speakers at the flat preset of the empeg.
The most important thing is adjusting the amp correct. The EQ should be just a fine-tuning for the current sound-layout (Jazz or Dance or classic or Rock...)

TeeMcBee
Got my Mk2! # 080000143