I have owned both the Single and the Double 15. The doubles are divided internally as an SVT cab is into two seperate cabs..
I rarely used the potential of that cab.. Even playing big rooms.
It wasn't as loud as an 810 but the freq response was smoother and less beamy..
The single DEEP 115 is my fave all time 115 cab.. Even with the stock speakers its amazing at what it can do.
Kringle was talking about putting Kappa 115s That would be nice i guess...IT would be able to handle more wattage.
Although I have put 500 watts from my crown amp and old Carvin power amp into the stock 200 watt 15" drivers with no issues at all..
I don't need all that cab these days.. I did a slew of arena size shows last summer with only one Genz uber 115 with PA of course. But i still would like to get another 115 bag end .. and maybe put a 5" faital with crossover in the box. the front panel has plenty of area to do that.. .. It would be the ultimate for me.
That larger bag end had a deep yet TIGHT low end..and great smooth mids.. The highs without the tweeter or mid driver rolls off nicely.. VERY ORGANIC..
And if you want more treble Turn it up on your amp. It has a nice vintage vibe when you do that. The amp speaks well.
I found that some of the more modern class D amps are voiced with a less prominent effect with the TREBLE knob. By design i guess. Which doesn't always work for me if i run a tweeterless cab like a 115 or 215 or 810 no tweet.. My old Alembic F2b does well for that as well as almost any SVT derivative or GK amp.. They can all get bright with a twist of the treble knob .. The treble control can do some damage if turned up tooo much but with no tweeters they can sound great..
All my opinion
I still need to try a air of teh S115 cube cabs.. I have not .. I asked this many years ago on here and it still have not been answered.. I wanted to know if the BAG END S115 ( being a 115) has as much deepness and an Aggy GS112? Those GS112s go deep for a 112.. I just dont like their lack of mid and note point and growl... The Bag End will growl...
So given the fact that one is a 12 and the other 115.. I wondered for a while how they compare . Since i had a pile of those GS112s years ago..
I do see a pair of some bag end in my future once again
SVTB15, that 215 cab is so awesome, I see it is based on the larger style S15B-D cab. I can only imagine how nice the low end would be with that cab, wow, so cool!