These
I don’t play professionally,I attend a few different open mics…and listen a lot ,,take note of what amp and cab configurations are used.and basses,and strings . At these open mics,,the bass is not running through the PA..which I find irritating,,but I guess the PA system that is brought by whomever is running the jam is not capable? At least this is what has been suggested to me. Anyway,it seems to me that a 4x10 cab seems to be heard much better than other cabinets. And I have heard guys running single 15’s,,2x10’s,and even a combo one 15 and a 2x10… so does this make sense to anyone here?
I think you're making some spurious correlations observing things that appear to be happening on the surface, but aren't. There's more going on.
These days speaker diameter and cabinet layout (number of speakers) can be designed to sound however the manufacturer wants them to sound. The old rules-of-thumb correlating speaker diameter or cabinet layout to certain tones are no longer relevant.
Same goes for volume. It really depends on power ratings and how much power the amp is putting through the speakers. All other things equal, yes, a 4x10 will push more air than a 2x10. But it's almost never a 1-to-1 comparison, because you have to consider how much power the different cabs can handle, how much the amp is sending, how loud the player has turned up the amp, etc.
And that doesn't even get into how different tones of different strings and basses and eq settings work for different rooms. On top of that, it doesn't consider the other instruments, how they sound, and how their amps or PA channels are set up.
It could be the 4x10 jam has players who don't get into loudness wars; players who know how to play and leave space sonically for each other. It could be that the amp pushing the 4x10 is just more powerful and turned up louder than everyone else, and it would be louder no matter what cab you attach to it.
------
I think part of what's tricking your ears is you're looking to see why the bass stands out in a mix and looking at the bass things. But a mix is everything. It's all the instruments, how they're set up tonally, what ranges they're playing in, and the room it's in. Bassists tell other bassists "mids cut through the mix." As an audio engineer, that's not necessarily true. Everyone wants to cut through the mix. If everyone tries to cut through and boost their mids, nobody will cut through the mix. It'll be simultaneously too loud and nobody will be able to hear anything.
What makes instruments cut through the mix is all the other instruments need to be in their own sonic space. Every instrument needs a little bit of the spectrum to really come through, and needs to pull back a little in other areas to let the other instruments shine through. It's the classic "big bedroom tone" vs "actual mix tone." At home people tend to make their instruments sound as big as possible because it's just them. But in a mix, there needs to be space for every other instrument for everyone to be heard and for the mix to sound big.
So when you're hearing the bass better in the mix at certain jams it's a confluence of several things. The bass, the strings, the amp, and cabinet speaker layout is one of the smallest parts of that mix. My guess is the jam with the 4x10 just has a loud bass amp turned up more than the others and you're correlating that with the cabinet, but really it's just the volume knob. Of course, that's my guess. I'd have to actually go and see all the different jams to give you a proper reason why.
