Cardas Speaker placement..

are those some type of bass traps in the corner?

if not you may want to try some.

You probably already know this but fwiw...

I agree with Phil; I use 6" corner traps and 2 4' x2' x4" panels lying against the wall and the increase is bass very noticeable. See my system which is listed under my threads.

Every room is different and you just have to experiment. The calculator says my speakers should be 7 feet apart and 6 feet into the room. That would never work in my room. I recommend using your ears instead of a generic formula.

Agree with Stanwal. Placement is very important, but acoustic treatments can go a long way to tighten things up. I, too, find that the Cardas formula doesn't give me enough separations and sidewall reinforcement. My room is narrow, 12', so optimal placement is only 3" closer to the sidewall than Cardas formula and that makes a very significant difference. But without bass traps, that placement sounds a bit boomy and muddy. With bass traps, just right.

It's not the amount of bass it's the lack of..I don't know if I over did it with treatments.In the corners I use the LENRD bass traps In the corners on the walls i'm using some DIY panels I made from 3" 705 rigid fiber glass framed in wood.The tops of the panels are covered with uralex metro foam..the system sounds very lean or thin in bass.No matter where I put the speakers ,no matter where I put my chair it sounds lean .Once again I tried other speakers with the same result..Only when I walk behind the speaker plane does the bass comes to life.