There have been a few of these designs done, but I will be doing something a little different with the mounting of drivers and ports. All parts are here or on the way. My drivers ship today from AE. I will be building each as a tall single unit with the SEOS at 33" and using round ports. I'm not a fan of slot ports for some reason, so round it is. The bracing will be tricky with fitting the ports in the front and making a turn up to fit in the box. The plan (for now) is to have curved sides with a maple veneer, and a shaped MDF baffle with a smooth transition to the waveguide using Bondo or whatever is decided to be best. I'm going to build some junky boxes for testing and listening first so I can have the patience to do these right. I am also going to polish the phase plugs to a gloss finish instead of having the brushed look.
These will be used in my media room, which is almost finished. Other gear is Onkyo 818, dual ceiling mounted, clone powered Gjallarhorns, and 6 of the DIYSG ported V-8 for surrounds using front heights. I have an SDX 15 I might use for some nearfield filler, but we'll see if I need it. I'm going to admit now that this room is going to be a nightmare with reflections. I'm lucky this much beef was approved by the authorities as this is the main room of our home. These 3 speakers will be the centerpiece at the front of the room and the only audio gear visible, so I have to make them nice. I call this my Ninja Sound den, because of the wicked-sneaky sound.
Robotbunny and John at AE have been kind enough to field many questions of mine via PM and email, but thought we could move all my questions here so other people can benefit from the knowledge of the guys who have build this design. Hopefully they, and other veterans of this design, will drop by and provide some input
-1 cubic foot for the TD12m?
- tune at 60hz?
- two 4" x 16" ports? Can I use something smaller, like 3"?
I would like to be able to cross these at 60 for music, is that possible?
Below is the progression of the completed build (11/18/2015)