I built these wedges a couple of years ago when we just needed something loud and durable to go to B-stages and rock gigs. Each box is made of 3/4" Baltic birch with a super tough expanded metal foam backed grill. You can literally stand on the grill and it won't break. The lows are Eminence Kappa12 which are pretty good sensitivity and power handling for the purpose. The high horns are all the OEM replacement horns for JBL Srx712m. The only caveat is 3 wedges have B&C DE600 high drivers and 2 have radian 745pb. All things considered these would be very reasonable for a club or entry level touring acts if you put a little effort into them. I will sell all 5 and include a spare b&c high diaphragm and a BBE DS48 4x8 speaker processor for $750 total if you come and pick them up. That's still under the cost of ONE new stx812m.