BillFitzmaurice.info

I've decided on building 4 of the T-48's and I'd like a fairly easy build set of tops. doesn't matter if it's 2 tops or 4. just want a fairly matched up system. what do you recommend? 1-12", 2-12", a 15'?

also, would it make sense to use the same KAPPA PRO-15LF for tops if I go 15"?

Actually, you don't need 15"ers for tops if you are using subs.
The simplest, high-output cab would be the OTop12. If you build on pair with the melded array for the bottom cab, and a pair with a CD or straight array for the top cab... for a 2-cab per side setup, you will have covered a good many situations. The double stacked cab/side helps in adding a smoothness, and less EQ.

singtall wrote: ↑Sun Mar 28, 2021 9:37 pm also, would it make sense to use the same KAPPA PRO-15LF for tops if I go 15"?

Tops don't use sub drivers.

Tom Smit wrote: ↑Sun Mar 28, 2021 9:54 pm Actually, you don't need 15"ers for tops if you are using subs.
The simplest, high-output cab would be the OTop12. If you build on pair with the melded array for the bottom cab, and a pair with a CD or straight array for the top cab... for a 2-cab per side setup, you will have covered a good many situations. The double stacked cab/side helps in adding a smoothness, and less EQ.

Guess I have to agree with this......since it's exactly what I do....

Simplest, fastest = Otop in Bill's designs.
4 x Otops 1 x 12's, with the HF sections mentioned by Tom and Bruce would be just fine.
I haven't heard Otops (I can't imagine them that far different from my DR250's though), but I trust judgement calls made by real world users like Bruce.
Bruce might know if the 3012HO's are worth a consideration over the 2512's...

just ordered plans for the Otop 12 PA and T-48. i can't wait to get started!

singtall wrote: ↑Mon Mar 29, 2021 11:05 am just ordered plans for the Otop 12 PA and T-48. i can't wait to get started!

Good for you!

We're here to help along the way if you need it.

If you can go to your personal info and enter your location, you can get help sourcing stuff if you need it.

through a bunch of trading services I ended up with 6 Carvin TCS210 top cabinets, which sound really nice...but I'm thinking of how I can turn some of those speakers into a horn loaded cabinets. I was looking at a dual 8" loaded O Top and thought that maybe I could use some of the Eminence Beta 10A's out of the Carvin's to build them. does this sound like a decent plan?

singtall wrote: ↑Fri May 21, 2021 7:12 pm through a bunch of trading services I ended up with 6 Carvin TCS210 top cabinets, which sound really nice...but I'm thinking of how I can turn some of those speakers into a horn loaded cabinets. I was looking at a dual 8" loaded O Top and thought that maybe I could use some of the Eminence Beta 10A's out of the Carvin's to build them. does this sound like a decent plan?

I'm all for thinking outside the box, but I think you'd be better served to sell them complete/intact and buy the recommended drivers if that's the design you like (OT8). On the other hand, if you wanna do it, go ahead and give it a whirl. I'd enjoy an offbeat build thread.

Or... build DR250's, of which the Beta 10 is a recommended driver. Probably still dollars ahead to sell the Carvin's and buy fresh drivers, though.

I love my otops. I built 4 jarrays. Melded piezos on the bottom pair, straight on the top. They are crazy loud, but still sound great. Think hifi on steroids. I just built another pair of T30s, but probably still won't be able to outrun the tops outdoors. We shall see inside...