OH, BOY! Now we get to spend $17K of someone else's money! While I ponder my version of a shopping list I'll throw out some more things that can be pondered while visiting the porcelain throne.
I'm not intending to pick on Dgarretson here. I'm just trying to think out loud and see if I can resolve somethings to my benefit. The more I learn the more I know how much I don't know.
If I'm taking too much of a turn from the topic of Amfibius's thread I'll be happy to take this discussion to a new one.
regarding the merit of a non-suspended TT, but sited on a platform that provides a decoupling suspension.
Adding a suspension to a non-suspended table? If this does improve the performance of any table, what does that say about that table's implementation? Flip that around to those who find that removing the suspension from a table in favor of fixed feet. Again, what does that say for the table's build or design?
But then again, maybe it is the combination of the table and what it sits on. I have found that the material directly in contact with my table has a lot to do with the performance that I get from my analog system. Either way it seems to me that we still have to make our determinations about a table's setup and performance on a case by case basis since there are so many factors that affect what we get. Analog can definitely be a tweaker's dream or nightmare.
[quote] If you can rap the rack with your knuckles and hear the sound through the speakers while the stylus rests in the record groove, then it's likely that the rack is acting as an antennae for LF vibration from earth or from AC transformers on the lower shelves or from acoustic waves from the speakers. [/qoute]
I believe the natural frequency of the earth is around 6-8Hz. Well below the resonance of most arm/cart combinations. Don't think that's going to affect much in the audible range. However, I can see that if one lived on a busy city street or had a freeway right next door there perhaps may be some transfer of noise into the table.
I can't see how rapping my knuckles, a force of several ounces or more per square inch, can indicate that sound waves can be influencing anything through my table above the noise floor of my analog system as a whole. I agree that it tells me the wood I built my rack from is relatively easily excited.
Noise from other components on the same stand. That should be real easy to measure the difference. All one needs to do is measure the response through the speakers with the components in the stand and with the components not in the stand. Very easy to find out if the difference is above the noise floor or not. This iss assuming that the sensitivity of the measuring equipment is sufficient enough to record the difference. Even if the equipment is not, and more importantly, can your ears hear the difference?
Gives me something to ponder.
