I've tried something very similar myself, and, behind his ML Prodigys, webmaster Jon Iverson uses blinds carefully slanted up at his 11' ceiling. This type of homemade device can also be useful in directing the reflections lapping around behind moving-coil speakers. "Brother," said Mark, "for the almost $100 this cost, it brings tears to my eyes." He explained that part of the rearward acoustic energy reflects toward the center of the room and part toward the sides because of the doors' positions, and if the doors are sloped back form vertical, part of the acoustic energy travels up. They're easy to paint to match the décor of any room, and once they're finished, you can place them against the wall behind your MartinLogans, the doors folded at the hinge at an angle of about 30 degrees, their outside edges against the wall, the hinged join pointing toward the listening chair. Instead, he recommends two 6' 6" slatted closet doors, hinged in the middle. He tried bookcases behind the speakers, but that didn't work out-too hard to find enough books. In fact, "It needs the living crap diffracted out of it." Mark likes the effect, but, quoth he, "The rear wave must be tamed!" Rather Shakespearian, I'd say! The way to do it, he hotly continued, is to diffract the rear wave. Remember, like all dipoles, electrostatics throw sound to the rear as well as to the front-you must concern oneself with the backwave and its reflection. His tweak is "so killer that you're going to laugh your butt off 'cause it's so simple, but so effective it's sick." Mark Gdovin a regular contributor to the " Soapbox" debates on is crazy about the inexpensive back-wall treatment he's cooked up for his dipole MartinLogan Aeriuses. This month's first tweak fits the Fine Tunes bill perfectly, and is aimed at owners of MartinLogan or other electrostatic speakers, with a tip applicable to moving-coil speakers as well. Leisure duds on? Bathrobe 'n' pipe, Ol' Yaller at yer feet and slobberin' all over your ankles? All's well with the world? Then it's time for "Fine Tunes"! May audio mayhem ensue.
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