There are some good suggestions by all above. Newbee is correct about playing with the speaker and listening chair placement. The closer to the wall the more the back wall will influence (good or bad) the bass regions.
I'm not that familiar with different tubes or tube amps but I believe there are very few amps that can really achieve that absolute control and visceral punch in the lowest octaves.
However, it seems that you had some of this before, and now it appears to be gone. I do believe that a certain amount of room pressurization helps. The fact that you now have a more open L-shaped room probably does not help matters.
Bottom line is no two rooms are exactly alike acoustically. But there are usually several ways to influence sonics one way or the other.
Does the new room have as good or thicker carpeting as the previous? Also, depending on ceiling height and reflection, your bass sound waves may be collecting and become trapped in the upper corners where the back wall meets the ceiling.
-IMO
I'm not that familiar with different tubes or tube amps but I believe there are very few amps that can really achieve that absolute control and visceral punch in the lowest octaves.
However, it seems that you had some of this before, and now it appears to be gone. I do believe that a certain amount of room pressurization helps. The fact that you now have a more open L-shaped room probably does not help matters.
Bottom line is no two rooms are exactly alike acoustically. But there are usually several ways to influence sonics one way or the other.
Does the new room have as good or thicker carpeting as the previous? Also, depending on ceiling height and reflection, your bass sound waves may be collecting and become trapped in the upper corners where the back wall meets the ceiling.
-IMO