Curtis, you inspired me to check the Ascend site to see what you're using. I'm curious; are you just using regular 340c centers turned vertically, or has David got 340s modified for that use? Looking at the picture, it would appear that the 340 has a vertical diffuser in front of the tweeter to aid horizontal dispersion. The tweeter would therefore have to be rotated 90 degrees to maintain the horizontal dispersion when the 340 is vertical. A baffle compensation in the crossover, apparently relating to the 200-400hz bump caused by a large TV, is also mentioned, which wouldn't be necessary for use as mains.
