@lewm, the Russians used tubes in their military avionics until the mid 70s I think. You would think just looking at a tube with it's delicate appearing insides that it would be sensitive to vibration. Is this reality or lay instinct? I use a tube phono stage which uses 6922's. It is not the tiniest bit sensitive to vibration, at least as far as I can hear and I have done some pretty crazy things. I have 25 foot long RCA interconnects from my Krell amplifier days so we put my turntable and phono stage on top of a subwoofer just for fun and to prove that the Sota was impervious to vibration. I had no intension of testing the phono stage. But, tonearm interconnects are only so long so the phono stage went with the turntable. I'll bet you can guess the results. I think the high end was slightly rolled off but my brain would think that anyway because it knows to much about the effect of length on single ended interconnects. Otherwise, everything sounded exactly the same as before I moved the turntable set up. But again this was subjective and only an indicator. I have never seen any proof that tube electronics are sensitive to vibration. If you have seen some I would love to see it. As far as what people hear? Subjective evidence is an indicator. It does not rise to the level of proof. Lay instinct is a horrendous trap I think most of us have fallen for at one time or another. I certainly have which is probable the reason I treat these issues more cautiously. I am not about to go out and spend money on an anti vibration platform for my phono stage. I have no reason to.
How to isolate turntable from footstep shake or vibration
Even while the Oracle turnable that I use has a built-in springs suspension by design there is a low or even sub-low frequency boom every time someone walks in a room. This becomes really bad with the subwoofer’s volume set high as the low frequency footsteps make straight to subwoofer where they are amplified shaking everything around. It seems the cartridge is picking up the footsteps very efficiently as even a lightest foot down becomes audioable. What can be done to attempt to isolate the turntable from the low frequency vibrations? Interesting, that the lower the volume of the subwoofer, the less the footstep shake is evident and with the subwoofer turned off it is a barely a problem at all.
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- 154 posts total
- 154 posts total