I very recently finished my first set of DIY speakers... I am not an emotional man, but I cried a little when I listened to them. I feel I wasted 46 years of my life listening to poor quality speakers. I chopped off the bottoms of the included baffles and changed the round overs to chamfers. I made the cabinets a bit taller and blocked off the bottom of the inside to match volume.
These were the dual woofer 'tower' kits, found here: http://www.diysoundgroup.com/waveguide-speaker-kits/fusion-8/alchemy-tower-kit.html I also made the center kit, here: http://www.diysoundgroup.com/waveguide-speaker-kits/fusion-8/fusion8-center-kit.html All crossover parts were included, makes it all pretty easy. Of note, I did not use the flat pack for any of these because I was changing the overall cabinet look. If I were to make these the standard size, I would have definitely enjoyed using the flat packs. They sound fantastic to me. I didn't directly answer your question, but it should be sufficient.
