How much acoustic room treatment


I purchased treatments from a magazine recommended source. I installed about half the panels as was recommended. Although the sound stage improved and echo decreased, i found the warmth of my tube amp decreased. Is there too much treatment in the room or do i now need to play with speaker placement to return that original sound?
the most significant change when installing the treatments were the stacked, 2 on each side total of 4, behind the speaker, in the corner behind speakers, bass absorbers each measuring approx. 2’ by 4’.
txs.
markkrauss
I forgot to add, i have 1 each first reflection points absorbers 2’x4’ on each side wall and 2 other panels, same in rear. Room is 14x18x 9’6”H
I would experiment by removing the bass absorption, or relocating them to the opposite side of the room. 
Mark, 

What you describe points to something else at work, if you take off too much high freqencies then the midrange would be more prominent and should sound warmer,  if you are now finding the midrange is now too sterile you are not just damping the room you are sucking out way too much energy.

All acoustic panels are not the same, we hate fiberglass based panels because they tend to do what you are talking about,

You want a broad based panel which has both absorption as well as diffusion.

First step is removing all the panels and adding them in slowley and trying them in different places and looking for a neutral tonal balance.

Which panels did you purchase?

Dave and Troy
Audio Doctor NJ