Very funny - a good laugh!
That is my chief quality control engineer in the picture. He most surely checks the durability of everything. Fortunately, he cannot throw the cabinets.
"Are they tilted for time alignment, looks, just to angle the drivers up a bit or all of the above."
You are looking at the front of the speaker. The baffle will be flat. It will be phase aligned, but not time aligned. The slope on the side is for two reasons, the latter is much more important.
1. It allows some offset of the drivers and a narrower baffle around the woofer/tweeter while maintaining good decent aesthetics? Offset drivers on a square flat baffle just look strange.
2. The narrower top section allows a nice long tunnel out the back of the speaker. It'll be stuffed for some loading of the driver.
2. Do you know any respectable lady that would allow a big huge square box in her living room? It'll be difficult enough to convince a gal to allow the huge cabinet. Asking a gal to endure a huge square cabinet is just way too much. This is true for my wife anyway.
"So is it the Hiqophon OW1, Seas Excell W18E001 and SCC300? "
Quite possibly, but there is an Accuton midrange that might work well too. We'll see.
"Will Dennis Murphy do the XO for these? "
Yes. I am getting better with my crossover design, but measuring below 300hz just isn't possible with my jig. I only trust myself with easy paper/poly cone drivers. These are soo much easier.
"Can't hardly wait for next fall."
I am encouraged too. The SCC300 is a wonderful sounding woofer. The speaker be expensive. It won't have nearly the value of the 1801 but should sound very nice. I have decided to pancake some other projects merely because I don't think there is a serious advantage to them. I only have so much time. The tall skinny cabinets are pancaked projects. They are in the backround of the large 3-way cabinet.
How did you get the moniker "marbles"?
Dave