Featuring a true ribbon tweeter, four 5" Italian-made pro sound midrange drivers and a 12" neodymium pro sound bass driver in a sectioned well-braced 11 ply baltic birch cabinet that is made in the USA! The crossover points are at 500 hz and 2,500 hz respectively and use only top shelf components by Clarity Cap, Jantzen, Erse and Mills. Internal wiring is Audio Question 14 gauge. These speakers truly disappear and display excellent imaging qualities, neutral tonality and a liquidity and flow that is very complimentary to my tube amplifiers!