With Lynn's article in hand, along with some AutoCAD drawings for the panels that I did, off I went to my cabinet maker friend's place to try to browbeat him into building a pair of cabinets for me. The cabinets went together with surprisingly little fuss, even though this is a MUCH more complicated woodworking project than your average reflex box with a brace or two. I hereby reinforce Lynn's assertion that accurate cuts are essential. The Ariels' bass performance is quite sensitive to the stuffing in the line and labyrinth, and some experimentation may be necessary to get the best bass in your room. The adjustable height line exit is also of great help in tuning the speaker and gives more flexibility in room placement.
Small changes can be quite noticeable, so proceed slowly.
Crossover component changes are also quite noticeable. Rest assured that premium quality parts are not lost on this speaker. After a few months of experimentation, I ended up with something very close to Lynn's Version 2.2 crossover . I ended up using the Hovland MusiCaps in all critical areas, with Solen's in the impedance compensation network on the woofers, SOLO Copper Foil Air Core inductors, and Caddock MP series metal foil resistors. The premium quality parts simply added to the Ariels' natural sense of ease, dynamics, and improved resolution of low-level detail without ever sounding etched or analytical.