I agree with rp: start flat, and definitely turn those contours off. (to 12 O'clock, it looks like.)
Work just with your graphic EQ sliders, from flat (= all sliders half-way up). Graphics are a really good way to learn about what frequencies are important to getting your sound.
And you'll want to have fresh strings, right?
Only you know what sound you're looking for (clarity means different things to different folks).
Once you hear your bass flat, before you boost
anything, see what you can improve by
removing frequencies that you don't want.
If you pull out a lot of mids, it'll start seeming quieter; so nudge up the volume as needed.
Unless you have a low F# string, you're pretty safe pulling the 30hz slider way down -- that's rumble city down there! Even if you have a low B string, I'd adjust lowest lows with the
next slider, 64hz, until it sounds good. You don't actually need the fundamentals on notes that low, it's the overtones that are important and audible.
If you're unfamiliar with what role different freq's play in a bass sound, check Post #24 in the following thread:
How to get the profesional bass sound. - Page 2 - TalkBass Forums
Good luck!