The Jim Griffin Full-Range MLTL Bipole with a Dayton
ND20FA-6 3/4" Neodymium Dome Tweeter augmenting the hf output of the CSS FR125 full range driver. The CSS driver runs full range; the tweeter uses a 1uF series capacitor for a simple first order high pass filter.
Tang Band W8-1772 full range drivers sitting on a 17th century antique oak coffer.
Interior of the Brines Acoustics TT-2000 MLTL.