room treatment gurus, please

Submit a request to GIK Acoustics with photos and all the information you posted here. Deal with the pros. That’s your best bet. 

I engaged Vicoustics to provide an acoustic treatment plan for my listening room. They orovided 3D diagrams and a list of their recommended products. This can get expensive so I sourced 2nd hand absorption panels, diffusers and bass traps. Your room is a huge part of the listening experience. I could not be happier with the result!

I suggest as the initial investigation and one that costs not too much monies a period of learning about the room and how the Speakers are able to couple to it.

A stool type chair and a increased length of Speaker Cables will allow for the repositioning of the Speakers and placing the stool at the correct listing point to enable a reasonably comfortable listen.

At each location Toe out and Toe in the Speakers to change how the sound is dispersed. The Stool can be placed nearer the speakers of further away to see how the dispersal of sound creates a sound that satisfies the listener.

It is well worth learning a little about the sound able to be produced in a room, before spending monies on somebody to make available similar learning using tools that are able to make the job a little easier, as well as create a data to show what ears are already reporting on. 

FYI I created a design for  my own room using my own ears and addition of DIY Produced Acoustic Controls, that really do work to my satisfaction. Visitors to the audio room are always impressed with the Speaker Coupling to the Space.

Yes I could have spent on a Professional Service and Commercial available Product to do something similar, but would it be slightly better or slightly worse? Does it really matter ? Improved is Improved and I certainly got improved.   

@pindac,

I agree with your assessment. There is nothing more satisfying than experimenting on your own and realizing the benefits of tweaking things here and there to realize greater outcomes. 
 

For my own personal philosophy, I have learned through trial and error that I much prefer to have strategically placed diffusion along with some absorption products to balance the room. I use old school Test Cd”s, Radio Shack sound pressure level meters, Rives Audio Professional audio test measuring kit, and a PAA audio measurement device. However, my ears tell me what is good overall, no matter the measurements. These tools are guides to help one understand the audio environment where you will be listening. Also, if I decide to use subs, I use a Velodyne SMS-1 sub EQ which is plugged in a tape loop on my Octave Jubilee preamp. 
 

I much prefer reverberation and ambiance over a less dry and less reverberating sound field. 
 

Can you please share your a sampling of your DIY acoustic controls? Would be interested to see what others are doing.