Hi Guys.\n\nI have my sights set on building a Polk LSiM 5.1 or 7.1 system. I bought the 703s (book shelves),and I am impressed with them so far. My plan is to eventually move them to surround duty, and purchase 707s as mains. However, right now the 703s are my mains.\n\nMy question is... what is the optimum height to set the 703s at? I need to buy some speaker stands pretty quickly.\n\nWhen I measured my ears at my regular listening position, they are between 36" and 38" off the floor, depending on my posture.\n\nAfter taking some measurements, I computed how far the 703 tweeter would sit off the floor. Here's a handy chart I made for the 703s:\n\nStand height 24" = Tweeter height 34.5"\nStand height 26" = Tweeter height 36.5"\nStand height 28" = Tweeter height 38.5"\nStand height 30" = Tweeter height 40.5"\nStand height 32" = Tweeter height 42.5"\n\n\nMost commonly, I see people using 24" stands for main bookshelf speakers... but that doesn't quite make sense to me, as that would put the 703's tweeter way below ear level. Also, for what it is worth, it would cause the 703 to sit substantially lower than the Polk 707 towers, which use basically the same tweeter and mid-range driver.\n\nI assume that Polk engineers put some consideration into tweeter height when they were designing the 707 towers, and that tweeter sits 43" off the floor. I would hope they would have engineered it to be optimal... Or at least, not set it so high to cause problems.\n\nHere are my conflicted thoughts:\n\nThe official 703 Polk manual states that we should buy a 30-36" stand for the 703s... but anything over about 30" or 32" seems a tad high?\nThe same manual then goes on to say that the tweeter should be close to ear level.... however, setting the 703s on a 32" stand would mean that the tweeter would sit 42.5" off the floor, which is above most people's ear level. \nConversely, a 32" stand would make it sit the same height as the LSiM 707 towers.\nThe flagship of the Polk series, the LSiM 707 has tweeters sitting at 43" off the floor.\nThe other tower, the Polk 705, has tweeters that sit 39" off the floor.\n\n\n\nOne last consideration, is that whatever stand I buy now for mains, I will hopefully be able to be used later when i move these 703s to surround duty.\n\nI was thinking 32", to match the height of the LSiM 707. Is this a good idea, or the wrong line of thinking?\n\nWhat is the current state-of-the-art thinking when it comes to the height of main speakers, and surround speakers for DTS:X and Dolby atmos?\n\n\nAny kind advice would be appreciated.