Hi Dennis. The Jena labs cabinet designs are some of the relatively newer designs on the Lowther market. The Medallion 2 is sort of like a Lammhorn design, and is good to about 60Hz on the bottom end. True horn designs, whether they be front or rear loaded, are limited by the length, shape, and size of the horn cavity, especially the mouth dimensions. Very low response is generally not achieved by true horns due to overall size considerations that are required for deep bass horns. I have looked at the Medallion 2 cabinet, and it looks like a pretty solid design, and should be quite satisfactory within its design parameters. The Voigt Pipe has a lower cutoff frequency because if its combination design not being a true horn. The transmission line and bass reflex characteristics allow deeper bottom end than most non-corner horn designs for the Lowther. Voigt Pipes are the cheapest and easiest to make, and are probably not the very best enclosure for the Lowther, but they are good. Some commercial designs like the Lammhorn 1.8 or Rethm systems will do better than the Voigt Pipe, but cost far more. I have found that the Voigt Pipes were fine for me, at the money I could spend. The sound is much better than would be expected from something that costs as little as it does. Mine were only about $1500 total including drivers, solid oak cabinets, and hardware. Took about a weekend to build using only a circular saw, jigsaw, hand drill, screwdriver, and glue. I used cabinet grade lumber, so finish sanding and staining was simple. The normal Voigt Pipe(non-folded) is 6 feet tall and has a 1 foot square footprint. Mine have extended sides that are hinged, and protrude out 1 foot on each side, for a total width of 3 feet when the "wings" are fully extended. So a normal Voigt Pipe will be 6' tall and a foot wide, and mine are 6' tall and 3 feet wide. Both are a foot deep. Lowther drivers take a very long time to break-in, and will need at least 100 hours to start "loosening up" and giving better bass. After 500 hours, they are fully broken in. They sound great from the beginning, but get alot better. I think the Hedlund horn is a very nice cabinet, but complex to build. If I had some money and time, I would give them a try myself. But I am quite happy with the Voigt Pipe, even if they are not the "ultimate" design. They will give you plenty of enjoyment and music at reasonable costs. When you read about the Voigt Pipe design, alot of disparaging comments are made about the "comb-filtering" problem, but that never was a problem for me. I think that too much is made of that, and is not really the problem that they make it out to be. If there is a problem with that, it is not noticeable in actual listening, so I don't consider it a problem in real world use. Welcome to the world of single-drivers.