Isolation of my chair, am I crazy???


Many of you know I am a tweaker, and often over the top. Well, I discovered something last night that was worthy of sharing, and I hope others might try this to help verify my sanity. Actually there are two issues at hand, first is isolation of the listening chair from the floor, and the second is brass weights on the shoulders.

Let me back up. I received a variety of Mapleshade brass footer and weight products for Christmas. I asked for them in that they were one of a small list of products I have not tried. As I was listening, I began touching furniture with and with out the weights to see vibration differences. I noticed my chair and therefore my shoulders were vibrating. I tried placing the 2 ½ pound weights on each shoulder. The sound clarified subtly…

OK, I looked a bit goofy sitting with weights on my shoulders, and yes my wife and son got a good chuckle, but…

Then I decided the chair was a far bigger issue than my shoulders, so I took four Aurios 1.2 isolation bearings and put them under the Lazy Boy. There was a marked improvement in clarity. I then tried with and without a number of times, the results were quite quantifiable. I discovered there was a small smear in the higher frequencies that was not previously perceptible.

A couple examples, the violin on Greencards “Weather and Water” and Natalie Merchant “The House Carpenter’s Daughter” (Both assume folk/ rock) had far greater definition. The separation of strings and thus notes was much better. It was much easier to feel the emotion of the interment and sense the resonance of the violins body. Vocals were clearer in the same fashion as the violin. The most profound sonic change was on Natalie’s fourth track. Near the end there are four or five tones that sound like a deep/rich church bell. Here the clarity and naturalness was far more significant. Before the tone was simply part of the presentation. With the chair on Aurios the tone was isolated, rich and dimensional. The rest is subtle stuff, but in one word I would say “natural” was the effect.

I’m writing this in hope of other people might experiment and share what they find. I assume this is more for those who have already addressed the major issues in isolation and have a very high degree of resolution, but it would be interesting to see what people find.

jd
128x128jadem6
Hello JD,I just want to say that i enjoy and learn a lot from your contributions,,i was just having a little fun!I do think you may be onto something here!Respectfully,Ray
JD, Thanks for the link; that was funny. Since you have already tried bubble wrap under the house footings, perhaps you can now A/B bubble wrap versus ball bearings under the footings:-) John
Ball bearings under the house is no joke. These are available. There is a very stately Victorian stone courthouse in San Francisco that was retrofitted with them. They cut all the columns in the basement and inserted the bearings to protect it from earthquakes. I think you also need to have a trench around the building so when the big quake hits, it can roll around before settling back into its original position (or, really, so the earth can move around the building while the building stays still).
When my system is firing on all cylinders it sounds its best with the most impact, the sensation of not only seeing the music but also feeling the music at my fingertips. When I make a change for the better it is what I see and hear and also what I feel. I notice this physcial change by my reaction to the vibration in my chair mainly thru the arm rests and on thru to my hands. Nothing in my system is isolated, even one of the walls and a large acoustic device on my ceiling which serves double duty as a retractable movie screen housing is direct coupled to the drywall and the rafters above. I try to maximise and focus the acoustic energy at my listening postion rather that to tame it or kill it,to do so I feel robs the music of its realism. My listening chair chassis is not direct coupled to the concrete floor below, though I have tried to do so in the past. Previous casual attempts were some what laughable and downright dangerous. I have a different chair and will take a different approach this time around.Tom
Hi Tom, I tend to agree with you, but in my situation the chair must be overly resonant. I expect it is partially due to the wood joists and my seating location being closer to the mid span than the bearing. It sounds like this is not your issue. In my case, if my arms are resting on the arm rest, the vibration actually tends to distort the focus. It's very interesting how two experiences can be completely opposite, but in our case it might be predictable from the structure of our rooms. It's fun none the less to learn of others experiences.
jd