I find that with any decent quality 115...over 2x12s strangely enough.
I've done much louder gigs with a single 15 than I'd ever done with 2 12s. Dunno. ..maybe I'm just wierd. ..
And 2 15s (specifically my 2 Fender Bassman Pro Neo 115s ) seem WAY louder than same amp, same settings thru the (venerable) SVT810E . I know. ..different efficiency of drivers. ..different designs etc etc....... but
This is just my findings/experience whatever
I've done much louder gigs with a single 15 than I'd ever done with 2 12s. Dunno. ..maybe I'm just wierd. ..
And 2 15s (specifically my 2 Fender Bassman Pro Neo 115s ) seem WAY louder than same amp, same settings thru the (venerable) SVT810E . I know. ..different efficiency of drivers. ..different designs etc etc....... but
This is just my findings/experience whatever