BillFitzmaurice.info

I have 4x T48s and 4x OT12s and while it sounds fantastic I'm running into a problem where a lot of venues my rig is physically just too big.

I'm dithering on building a more compact rig. Considering to start build a pair of T24s and use my Simplex 12 wedges, which sound decent, as tops. Or maybe build a pair of SLA Pros for tops. Or just the T24s them with my OT12s (they sound SO GOOD!) and truth be told I can probably squeeze a pair of OT12s in a lot gigs but I need a smaller sub setup.

Ok that's the background, here's the actual question.

Apologies up front if this has been answered elsewhere. I have searched and read posts that do partially address the questions I'm investigating. For example I do know two single loaded cabs is better than one dual loaded cab in general. Also wider is always better single or dual but I want to stick to a 24" footprint.

I'm looking at the SSF102.50L and the 11.5mm Xmax is nearly twice the other drivers recommended. This is probably a terrible over simplification but wouldn't that additional displacement in a single loaded cab roughly be like having a dual loaded cab with a driver like the BP102 with 6.5mm Xmax?

If I'm not way off mark there then would a single loaded SSF102 have a SPL chart comparable to the chart I was able to find for 24 inch wide T24, loaded with two S2010 or two BP102?

Thanks for any help and feel free to if I'm thinking wrong.

Dave

From the T24 plans: 'The 11.5mm xmax of the SSF 102.50 gives almost the same output as two BP102, so while it’s expensive it may be worth it if you have more cash than pack space.'

oof! well egg on my face. Thanks Bill, not sure how I missed that. The SSF is running $145 at Parts Express and the BP102 is $116. Seems like a no brainer.

Looking again at the SPL chart for a dual BP102 I think a single driver SSF 102.50 in a Tuba24 should pair nicely with the Simplex Wedge 12 or an OT12 as a top in the smaller venues. I'll likely build a couple.

Out of curiosity, have you tried any of these smaller gigs with just one T48? Obviously, the same pack space as two 24" T24's.

Seth wrote: ↑Wed May 13, 2026 11:31 pm Out of curiosity, have you tried any of these smaller gigs with just one T48? Obviously, the same pack space as two 24" T24's.

Hey Seth. Fair point. I've been packing two but you're right one would probably suffice & I should try that. For some of these gigs it's just the visual impact I think when we're crammed into a corner of a pool area in a community center or something like that. I roll in the T48s and set up separate stands for the tops and I get complaints before I'm even making any sound. Sometimes from the band too. I think a lot of folks are just used to seeing a couple KS112 subs with tops on poles.

Of course there's also the possibility I'm just trying to justify another speaker build ...