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. . . with dual line chambers and ports. The woofer, a TB W6-1139SIF, will be buried inside the line. Gross internal volume, including ports, will be about 1.4ft3. This will leave about 0.1ft3 for a sealed midrange chamber, if needed. (Or I may go with an open back midrange instead).
I modelled the line in the Leonard Audio TL program. For validation, I'm building an initial test line with a removable top panel and slot ports, held together temporaily with bar clamps and weather stripping. The slot ports will start out with oversized dimensions of 1.25x7x14." Then I'll slowly trim them down to size based on measurements. At the same time, line stuffing will be adjusted until mid-bass peaking matches the model.
I just found another cheap stack of particle board shelves at Mendards, so, it's time to make sawdust. I'll report back periodically with measurements as I try to pound the response curve into shape. I'll put a side view drawing and a few model pics in the next post.