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1. Anything I should do 1st before I calibrate using Audyssey? Set my own disances and level out my speakers with my Sound Meter?
Audyssey will set up distances and levels just fine. Can check phase between subs and mains afterwards to make sure working in phase as many have found a slight tweak on sub distance after audyssey has cleaned up some issues. Might want to pull front l/r little further out from front wall. Room treatments are usually a good thing. I would read this audyssey setup guide.
http://www.avsforum.com/avs-vb/showt...php?p=14456895
2. How should I hook up and calibrate my subs. I plan on putting my two epik empire on each side of my TV stand (looks best that way) and trying the SVS in the back corner of the room by a couch. Not sure how it'll sound and I'm hoping I'll like it with just the two Epik so I can sell the SVS and make some of my money back... But anyways, should I use a splitter out of one of the receivers inputs for both the Epiks and plug the other in separately and run audyssey that way? Or what?
I believe audyssey level matchs subs with your receiver off of its multiple sub outs. I don't think you want the svs level matched with two empires, the svs 10" won't keep up with the empires 4 15" and will hold the system back if that is the case. I am not sure the best way to hook up those three with your receiver for best results. Might want to ask in the audyssey thread. May try gain matching the three subs so the pb10 doesn't hold the empires back, and use two y-splitters off of one sub out on receiver. Thing is with this you don't have different distance settings for subs from receiver so could have phase issues. May want to run audyssey with pb10 and empire sitting beside each other with both hooked up to receiver to see if different distances show up between the two. Lets say empire comes back 5 ft and svs comes back 8ft, would know svs needs 3 ft farther distance from lp to have same phase/arrival time if run off same lfe output. Only way to find out if they will work together is to try it, may find the svs is not needed anymore/ not worth the effort. I have heard of frequency response issues between ported sub and sealed subs below the port tune of the ported sub as it has phase shift.
Check out the reads on audioholics on subwoofer setup and how to find best placement.
http://www.audioholics.com/tweaks/get-good-bass
3. Since I'm used to Yamaha receivers, are there any sound modes or stuff that I should be looking at to make sure I am running and also that I should make sure I have turned off so I get the best sound (this setup is for MOVIES only)
I would read the manual for description of all the modes. It has low level listening modes that boost low end and surrounds and night modes that will take away from dynamics just to name a few to look for.
4. Also just wondering the best spot to hang my heights. And wondering if I should lower my rears from where they are now? I can't tell if I have them to high or not? Or if they'd sound better hung a couple inches further ahead so that they aren't so close to the back wall.
I prefer to have my side surrounds directly to the side rather than slightly behind, and ~2 feet above ear level. However it looks like the window will make it tough to move rears down to same level as sides. I don't know if they would play well with your rears being at such a different height. May find that lower placement of sides without rears sounds better than all four up high. Experimentation is the best way to find out.
Setup is looking good, shoot me a pm if you have any questions.