I just bought a matched pair of DPA 4006-TLs with the acoustic pressure equalizers and grids (thanks to Mike at Vintage King Audio). My initial intention is to record a hand-made German 7'2" grand piano in a small live room. I just received the set and havn't started experimenting (will start this weekend). Does anyone have any experience with these interesting little accessories and perhaps some suggestions/advice? P.S., the 15x20x8 room has no acoustical treatment; however, I plan on assembling and installing some OC rigid fiberglass panels.