I guess nobody ever said the obvious:
I played my bass through a Music Man HD-130 Reverb with
a 212 cabinet and it didn't work: the bottom end just wasn't there. When I later used it as a practice amp, I used the head with
a Hartke 410XL bass cab, and it had a thunderous low end.
This was not some odd coincidence: the fact is, bass speaker design is a specialized art. Back in the day before subwoofers you could often tell how expense a stereo speaker was by whether it had any noticeable bass frequency output or not, and a lot of jiggery-pokery was expended to make relatively small living room speakers put out a deep, articulate bass. It is quite easy to design a "thumper" with no definition or articulation, but much more difficult to provide a musical bottom end.
If you are satisfied with the tubby crap you hear coming out of the cats' cars cruising down the street, God bless ya, son, but you'd better keep away from playing the bass.
Again using my MM head as an example, it had a few features totally useless for a bass: tremolo and reverb, to wit, and an extensive EQ stack that was voiced for the guitar end of the spectrum, and ill-suited for bass.
And to Greg_L, sorry, man, but you have said something that marks you as an ignorant person. Maybe you were trying to be funny, but with that attitude you'd be run out of any band I've ever been in.