Hi Keith - Thanks, the credit for the quality of the carpentry and finish goes to the fabricator. He has been making high-volume cheap sealed enclosures so far - this is the first TL that he has executed, and he has picked up the salient features as well as aesthetics very fast.
The length of the line and most dimensions are the same as Bjorn's TABAQ box:
http://www.coolcat.dk/bjoern/TABAQ BOX Cabinet build.pdf
The differences are:
1) Front and rear baffle side-edges have been chamfered to minimize diffraction effects (probably only relevant for the front baffle, with the rear being mainly for symmetry and aesthetics).
2) Cutouts for 2x 3.5" drivers centred at ~168 mm and ~272mm from the top. This moves the midpoint of the drivers about 52 mm closer to the closed end of the line (which has also been suggested by Bjorn even for the single-driver case - i.e. moving the driver ~5 cm higher).
3) Terminal connector block is lower down on the rear, to reduce the internal wire length to the drivers.
4) The connector cutout is sized to accept either an MX dual binding post, or a generic spring-loaded wire-insertion connector.
5) Push-fit plastic dust baffle with cloth diffuser.
The terminus dimensions have been retained at 97mm x 120 mm x 13 mm. I haven't stuffed the line in the first prototype, but will probably add the stuffing later (I'm planning to use the nylon stocking-like bags which are provided in some supermarkets for carrying produce and fruits, stuffed with polyfill from an old pillow).
. I am not sure if I could hand wind, hence looking for ready to use product.