but, maybe you can help me with a few questions.

I think I'm going to move the Delta 12LFs from my Karlsons into some proper Theater 3 Pi boxes. (So Wayne I'll need some plans). I have the crossovers and comp/drivers but I have the H295 horns and wonder if I should get the H290s?

Also, I was thinking of putting the Beta-12LTs into the Karlsons... I'd like to try them with some sort of "super tweeter" like the Fostex FT17H (or the T-90A if I can get some cash together).

My last question is: can anybody here figure out what sorta crossover I'll need for this? If I just want to run the 12LT wide-open and put a cap in front of the tweet what value?

Does anybody have any experience with this set up?

Thanks guys,
David

As for your other speaker, generally I've found that a simple first-order works best on something like that. First-order crossovers have such wide overlap that the choice of components isn't all that critical. You have about +/-2x window there. So I'd probably suggest something like a 1.0μF to 4.7μF capacitor with a shunt damping resistor of about 12Ω to 20Ω.

I'll let you know how it goes... Will I need to pad the tweeter? should I just get a cheap L-pad?

Actually I'm gonna try running the Beta 12 LT which has the whizzer cone... I think it goes up to about 8 or 9k. Would you recommed a smaller cap value then?

I was figuring I would get a cheap L-pad. Find the best setting. Then measure and replace with resistors.

thanks again!

note: I am using L-Pad's in addiction to discrete resistors to achieve a plus/minus output control that you mention earlier in your definitions of a perfect L-Pad xover design.