wasn't matt(?) working on a 3 way for 2 channel music focused use? it never came out that I knew of.
I've love a diy 3 way with a seos horn tweeter and highish sensitivity mid and bass woofer. Not many DIY horns for music other than back horn loaded single driver speakers
Gear list: Main setup - Kef Q900, XTZ 3x12 Subwoofer, Denon DN-700AVP Processor, Mivera Iceedge 1200AS2 Class D amp, epson 8350 projector, elitescreens sable 92" screen, Intel Nuc HTPC
Bedroom setup: Philharmonic Audio New Philharmonitors, Folsom 7297 Amp, Oppo Sonica Dac