Ultimate DIY speaker design?



Hey everyone,

I've got the bug to build a set of DIY speakers, I havent built a set in years.

Is there an ultimate design out there that anyone can recomment?

I saw the WATT Puppy designs out there but I am wondering what else I might consider trying.

Note, I definitely dont want a kit, I wouldn't mind doing a custom design I come up with myself but I would ideally like to try a clone of something with top pedigree.

Thanks in advance!
idfnl
Remember the post of a guy who built massive horns into the foundation of his house? I think these were almost big enough to crawl though.
Start with a DEQX for dynamic drivers or a Wisdom DCAB-1 (if you can find one) for BG (Bohlender-Graebner/Parts Express) ribbons.
In the old days one system described in Audio was concrete built alongside the house, the exit of the horn into the house was 6' tall. It could blow out candles across the room or make your trowser leg flap if I remember. It was mono and crossed at 50Hz I think.