I LOVE the A.A. bouth the bass is now and then a bit to boomy. Not much but still enough to my likings.
I have room treatment. In the corners behind the speakers i have bass traps from
http://www.acusticaapplicata.com/daad.php, thick carpet in front of the speakers and a thick floor to selling curtains infornt of the window.
The walls are brick wall, the floor is an old wood`n floor (old apartment from 1870)
When you say isolations for the speakers, what are you thinking about? I have the small Herbies disc under the spikes.
Hi Pierre,
A few observations/questions...others here with greater expertise will hopefully also participate.
1. What happens when you put in those acoustic treatments...what happens when you remove them? Did it reduce the boom?
2. Brick walls may, I suspect, bounce (and not absorb)...are they covered at all, even with oriental carpet? I wonder if Stillpoints Apertures would help here?
3. The wooden floor...construction in the 19th Century...it could also be that the Amatis are transferring some bass down thru the floorboards which are resonating. Try a simple experiment. Place them on an Auralex isolation platform...very inexpensive ($60?) and they are often used by professional bands when they play and need to put amps/speakers or parts of drum kits on a stage (which is hollow underneath) and need to avoid the interaction between their equipment and a resonate floor.
For me, I have a Velodyne DD18 and the floor 'sang' with the sub. Once I placed the Sub on top of the Auralex, a lot of bass boominess just disappeared.
If you cannot find Auralex (usually available on Amazon), try elevating them to isolate them from the floor...anything...just to see if the boominess goes away or at lease reduces (again it might also be partly your walls). If it does, then you know you need to do something about the speakers and how they are isolated from the floor.
Hope some of this proves to be helpful.