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For treating first wall reflections high density fiberglass or rockwool absorber panels do a fine enough job. 

Quilts aren't usually thick enough to do the job correctly since they only absorb high frequencies, but they're still a lot better than nothing.

In all honesty room choice and its treatment are almost as important as choosing speakers. It can be modeled to a degree ( http://www.acousticmodelling.com for instance offers some basic modeling tools), but most of it needs to be measured in order to achieve optimal results. A decent USB omni-directional calibrated microphone can be had for less than $100 and some great software like Room EQ Wizard is actually freeware. Having these basic tools empowers you to know exactly what effect acoustic treatment products have.

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Thanks for sharing.  I don't have any bass issues as I have a very open loft.  Johnny Rutan came to set up and calibrate the room.  The quilts make a nice difference.  I don't have a dedicated room, but my wife puts up with a lot.  That said, she's not keen on wall treatments, even the ones I have that you can have pictures on.  Just something I deal with, lol.  It's all good though since the room sounds decent without treatments. I don't even have a slap echo problem, so I don't 'worry about treating the ceiling.  I believe there is a 99% chance that would be vetoed quickly, lol.  :). 

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Yes, just saw that.  I'd make my own wood stand to match them.  I need to see which of my dealers sells them.  I like the idea of a stand to put them on the back wall and then I can move them when needed.  Not sure if I'd need three or if I can just use two and leave the bottom open.  I'm sure the dealers will know.

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ct, ceilings can also be an issue.  In his infinite wisdom, Johnny Rutan also gave me a tip on ceiling reflections.

Tape or glue an old cd (shiny side facing out) to a yardstick.  With someone on a ladder, holding the stick against the ceiling,  sit at your listening position and point a laser at the cd.  By moving it around, find the spot where the laser reflects off of the disc right onto your tweeter.  That is the spot on the ceiling you want to put a diffuser.

I used to use bathroom floor mats.  I've since upgraded  ☺️ to egg crate-like mattress pads.

Disclaimer:  huge amounts of WAF required 

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very interesting.  NOTHING will be allowed on my ceiling though, lol...WAF ;).  I don't think I have a major issue with that though.  My old house wasn't kind and I DID have a diffuser where it was needed.

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