I knew room treatments were in my future.

For those of you that have been following my posts. I bought a new house, leaving my great 24' square listening room of 36 years. The best prospect is the basement room 12'x 18'. Home for my new Hegel H390. Thick carpet, concrete block on the end wall and one 18' side. The other side is 2x4 construction with paneling. 
My dealer said he can help with treatments. 
Bryston A2 wired speakers. 
My best guess is placing my speakers from the 12' wall towards the 18' end. 
Thanks for any suggestions.