GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Audio Discussions
In the Thread: Romy The Cat's new Listening Room

Post Subject: To jack or do not jack, and more thoughts.Posted by Romy the Cat on: 4/19/2010

Yes, I bought a few jacks, they are not expensive, I can buy a lot of more. I put them under the floor, assuring that the floor does not “play” anymore but there is one big but in all of it. Those intellectual attacking of the floor’s mode have absolutely nothing to do with sound. Yes, I can jump on the floor and I can detect that the floor plays (vibrates). Sure I can jack it and make it stable. Still, why this vibration of the floors would necessary affect sound negatively? We do not like that that the floor vibrates and we attribute this vibration to negative impact to Sound. I do not know if it is true and I do not have at this moment a methodologically-clean routine to verify it. I do not know if vibration is the problem or the sipping of LF across the floor is the problem. It easy to demonize vibration of floor – the question is why. When we make a large sealed enclosure we treat the wall with damping material in order the walls virtually “vibrate”. Why in such case we hate the vibration of floor in the rooms? Sure the equipment shell not be on the vibration floor but I am not talking about equipment but about the room acoustic.

I do not have any opinion of judgment on the subject, I juts question what we always recognize as common sense. The “concrete slab is good for bass”. Is it good because it does not vibrate or it is good because it not transparent for LF? If second then how about to put in a basement a powerful ULF channel that would be in time aligns position and that would make a room to flow on the bubble of LF, making the floor itself irrelevant. My room is a perfect opportunity to render this setting.

The Cat

Rerurn to Romy the Cat's Site