http://m.youtube.com/#/watch?v=uATFL8nptrw&desktop_uri=/watch?v=uATFL8nptrw
Two minutes in Nolly's bass tone. Something like this but clean and not distorted
How can it be anything like that and yet be without distortion? You'll have to come up with a "clean" demo for us to know what the tone in your head is. "Nothing Else Matters" bass tone?

Jimmy might please tell you where nominally flat is on the SVT III eq. It probably isn't with the knobs at noon.
I'm guessing you get all the distortion you (don't?!??
This is how you get booomf while saving a bit of power for other things and not flabbing your ported cab into producing muddy distortion harmonics of fundamentals smack in your breadbasket mids:
"Flat" with the SVT EQ and drop the 33hz on your graphic to the floor for starters. Be very hesitant to boost the 50hz on the amp, in fact it would probably pay to cut that a little also. Now boost 80 and 130 on your graphic, I would be more careful boosting 80hz if using a more powerful amp. This knocks out the fundamental frequencies in favour of the 1st overtones.
For the rest you must experiment with yours and guitars EQ's through and through. You can get a baseline setting for everyone that doesn't need too much tweaking venue to venue.
To really hear the bass sing, guitar EQ will be entirely different from what they are used to dialing up. They must be onboard with letting bass be bass and guitars be guitars to have any hope of doing any better than filling in a leftover scrap of tonal range with bass tone. Otherwise they will dial back in their overpowering lows every time your back is turned.
How technical do you want to get to a great sound?
What are the guitar players using for rigs?
In a practice studio 4x12 halfstacks need to be lifted up to give the guitarists a true impression of the sound they are putting out. You can lift a bass cab 2 1/2' off the floor without losing low end so have no truck with that, it's a trick of the mind as you hear the higher directional frequencies so much better when they aren't directed at your legs.
