Pics of HiVi D10.8 T-line, 3way, TB bamboo, and SB29 tweeter

[object16]

Hi, I would like you to view my HiVi D10.8 completed T-line. 3 way, with TB 4" bamboo in a sealed compartment full range used as mid, and SB29 neo tweeter. Crossed at 250 and 2500, with electronic crossover, tri-amp.
The HiVi D10.8 models perfectly using quarter-wave.com mathcad software, using a 96" line, line starts with 2Sd, and tapers to 0.2 Sd. The middle and end parts of the line are stuffed moderately with wool. The driver offset if 20", this smooths the upper end, without any significant bass loss.
I use another similar t-line cab for just a subwoofer. Basically though, the 10.8 by itself in the quarter wave t-line has the response of a subwoofer already, so L + R + Sub is like running subwoofer x 3!
pics of this project is here:
http://s1127.photobucket.com/albums/...20the%20D10_8/
and my other t-lines are in this album:
http://s1127.photobucket.com/albums/l630/object16/
there is 4db of gain at 30 and 40 hz due to the t-line contribution.

modeling shows 3db down at 30, and 10db down at 20.
i can't seem to attach the modeling graphs, but that's the 3db and 10db modeling points.

[6thplanet]

Cool project, any perticular reason for the dual mids?

[object16]

reason for 2 mids: the most important musical sound, I mean sound information, is coming from the mid-range, and I felt I could get a cleaner sound at louder levels by using two. I could have picked just a single Tang Band 5" which would give me the same Sd, but by using a pair of 4's, I feel the cone surface area is better controlled with two smaller drivers compared to one larger, and also this would simplify the cabinet building: the t-line is folded inside the cab, which leaves room for a
triangular sealed compartment at the first bend - by using a pair of 4's, this gave me a smoother bend, and was just a little simpler to construct. It also resulted with very tight clustering of the sources, which I thought would be a good idea, because this would minimize interactions (lobing, etc) - paul mozarowski.-