on the topic of positioning for CM10s does anyone have any suggestions/knowledge regarding the dispersion patterns of these speakers when it comes to placement in a non-rectangular room less than ideal acoustical properties?
to clarify I was wondering if it makes sense to perhaps aim the CM10 downward a bit to help offset the effects of my troublesome vent pass that sits either just above my main listening position (or just behind and above/in front and above) depending on the placement of my leather couch. I am going to try and get a CAD diagram going to make it easier to visualize but this vent pass is causing me all kinds of headaches when it comes to speaker placement and subsequently calibration using xt32 on the sr7009. the vent pass is 1 foot in height coming down from the ceiling and starts at 10 feet from the front wall and runs 3 feet in width. it is the full width of the room as well and the right wall in this setup is a thin, badly insulated separation from a noisy hvac system feeding this vent pass and a vertical one within the utility room with not just air but plenty of reverberating noise when it kicks on.
Long version.....(stop reading if you have a life outside the forum)
the rest of my set up is like this:
brick fireplace is on front wall (behind my tv stand and CMC2) which is 17 feet in width - fireplace is not exactly center in room but closer to right wall by a foot or two - this results in my entire set up behind off center unless I move the tv stand and consequently front 3 speakers to the left making it a bit unpleasing to the eye and perhaps even worse on the ears as the right speaker will be closer to the brick fireplace then the left.
I have tried setups with the CM10s 3 or more feet from the front wall as well as closer to a foot from the front wall and experimented with distance between them ranging from 5.5 feet of separation to around 8 feet of separation (always with cmc2 below my tv and angled up).
I have had moments of great stereo playback with varying degrees of toe in but ideally I want to avoid a "sweet spot" and go for more of a wide listening area or if possible a "full room sound" if that makes sense.
I have experimented with subwoofer placement as well with my dual (2) SVS SB2000s subwoofer behind placed mid wall (just at front edge of vent pass (about 9 feet from front wall) of about a foot from each side wall or up to 3 feet from side wall which is usually just left and right of my couch serving as the MLP. Also have tried front wall set up in side of CM10s - outside of CM10s, and one in front right corner and one in rear back left corner.
I am STILL looking for viable speaker stand option for my cm5 surrounds but short of ordering something from b&w I havent had any luck. Got some helpful suggestions on the forum for stands that would work but will not allow for bolting down the cm5 for lack of the better phrase and in that scenario i am leaning towards building my own stands with some metal or wood round column type material and two wooden top and bottom pieces to plop the cm5 on top of. as for now i am using some IKEA furniture as stands for them and the cm5s almost always end up either right under the vent pass or just behind the vent pass as this is the only way to get them to fall into the 120-90 degree angle from MLP.
I dont have rear surrounds yet (may add them or heights or wides) because i haven't gotten to a setup with the current 5.2 gear that i am really happy with yet so trying to avoid complicating that further.
and the questions:
So to get the point for anyone still reading (thank you)
I am wondering if i should scrap my tv stand in front of fireplace room set up and start all over using a different wall for my front three and tv. this would change the layout of the room so that the vent pass would be either perpendicular to soundstage and just off center or more left of listening area and consequently depending on the wall used having the hvac system behind the listening couch (at least 3 feet or more from mlp) or set everything up in front of the hvac system.
continue with current set up and try different mic positions with audyssey til i get things as close to decent sounding as possible. even when i get extremely accurate readings running the calibration in terms of distance measurements and subwoofer level/etc. down to the .1 of an inch I still get room nulls and peaks where lower frequencies sound good throughout the room or even just on the MLP couch.
would rear surround speakers help offset room reflections from the front sound stage for multichannel music listening?
if so would a pair of polk t15 bookshelves do the trick or would it be wise to stay in the family and add a cm1/cm5 or otherwise to the surround mix help even out the field so to speak?
if the cm10 is angled down a bit from level (i sit on a low couch anyway) would that help avoid reflections on the vent pass that could be stifling the sound from the front speakers?
did i forget to mention that the rear wall in my current set up is only half the width of the room and the back right side of my setup opens to a hallway and staircase?
I cannot say things sound bad - but without getting to the level of REW measurements (already used spl without much success) does anyone have any suggestions as to how to improve things?
happy to clarify any of this and i know i have asked much of this before in the forum so i appreciate anyone taking the time to chime in and for the patience of those who have helped in the past as it may seem a bit repetitive from previous posts.