Room Treaments - Where To Begin...

Recently, I found this PDF available for free download. There are newer editions available.

THE MASTER HANDBOOK OF ACOUSTICS 4th Edition by F. Alton Everest

That is a serious book. Good Lord. 10 pages of table of content.

My hole booklet about acoustics was 10 pages long, WITH a table of content and one "this page is intended to be blank".

That guy had something to say.. :-)

Regards

Don't judge a book by its cover. The cover says, "Acoustics hard. Use headphones."

I used GIK. Very good people to work with. I have a 12 by 21 room. Cost about 1200.. they are 6 to 8 inches thick. I could buy more bass traps but haven’t put up on my list. I can walk around the room and the music sounds good with only a little bass peak in a corner.There are many things that come to play., sub placement and speaker placement are two items that need to be dealt with.

Recently, I put speakers and subs on springs. This helped as much as the room treatments.  It is much easier when it is a dedicated room.

Vicoustics is another option. They give a detailed analysis of your room with pictures you send them. No cost to you. Good luck !