![]() I am using a B&C aluminum horn that is very similar to the 2380 with damping I added to its exterior flare, btw. Many people that have used supertweeters to make up the difference above 10-15 khz have had problematic results from my perspective, because of delay and dispersion dissimilarities between it and the HF horn, and I am not aiming for 'perfection' with the Basement Blasters IAC, just a high end with tremendous dynamics and good extension from a single HF driver. ![]() However I can say that making the 2445 go out to ~22khz (with some help from the xover) does make a difference to me in my home system. I agree that a 2" driver is not the best solution for the top end. The 2445 response step around 9khz that you may be referring to took a little xover work, but I was able to pretty much remove it. Certainly the 2446 is preferable for maximum SPL pro sound work where the last bit of sensitivity between 10-15 khz is much more important than response out to 20khz.
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