Smaller vs larger listening rooms?

Having speakers sound proper in a room where they can be placed out of the way is rare. 

Any "small" room, especially with irregular geometrey, or not the ideal geometry, and irregular topology and varied materials in there, need passive treatment and often active non electronic controls...

I succeed in my room ,but it takes me 2 years of listening experiments for my 2 listening positions....It was fun...

My room is irregular and not ideal by any means.... 13 feetx13x81/2 with a speaker in a corner and the other not...

The sound is now so perfect and balanced  that it is incredible....

Hope, listen and be creative.... All that cost me almost nothing and of that i am very proud...But my homemade devices are not suitable in a common room and not esthetical....

My post is there tough to be a glimmer of hope....There is no bad room in truth.... Only room in need of particular attention.... Those who pretend the opposite are sellers who dont want to take the time to do the job because they will lose money doing so it takes too much time to balance all the factors...

Acoustic is more powerful most of the times than ANY upgrade... People who has never experienced it cannot believe it, and the consumers market has no interest to communicate this truth....Who will bought an upgrade?

My room is 12.5 ft wide x 20 ft long x 7 ft high. Objectively, too low and two narrow for the best sound.

With attention to acoustics, it’s become one of the better rooms and systems I have heard.

The speakers are Janszen Valentina P8. Subs fill a hole in the bass of the main speakers that would be present in any reasonable listening position.  Adding DRC helped smooth the bass further, though it’s better than most even without that.

as @mahgister said, " Hope, listen and be creative" and address the room acoustics. That, almost always, will provide more improvement than gear upgrades, no matter how costly.