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I Have Airborne Feedback And Never Realized It...Till Now

  While my ZYX Airy is out for a rebuild, I hooked up my CAL cd player/transport and started playing CD`s that I had recorded from vinyl using a Tascam 900.
When I do the recording, nothing is on but the TT setup and the recorder. Room is dead silent. No speakers

I`ve  been listening to a disc or two over the last few nights.

Last night, I was listening to a CD I made of Lindsey Stirling`s 'Shatter Me' LP
I was hearing so many odd/different sounds that I never picked up on before using the TT.

For example, I heard growling sounds (seriously) back ground noises and other THINGS that all were hidden when I was playing the TT.
This LP is Bass Heavy! Lots of energy in the air. With 3 15" subs I know that.

My TT is pretty much isolated IMO
I use a Rega wall mount bracket that is bolted to my equipment rack not the wall.
I have the TT sitting on a SRM isolation platform that sits on the Rega bracket
Concrete slab floor.

No doubt the cartridge is picking up on all energy that and resubmitting it.

This won`t be an easy fix I`m afraid..  :(



scm

Showing 3 responses by mapman

mapman's avatar
mapman
21,936 posts
 
I have speakers in unfinished area with bare concrete floor. That has issues.
But where my good gear is in finished area with thin dense carpet and padding that works best.
Upstairs on suspended plywood floor different issues.
These are the facts. As usual ymmv.  Depends on what the gear is resting on as well. 
mapman's avatar
mapman
21,936 posts
 
He can stamp on my concrete all he wants and nothing will happen.  Guarandamteed.  
mapman's avatar
mapman
21,936 posts
 
If you have concrete floors at foundation level you are good to go there.

Turntable just needs a solid foundation on top of that. and that should cover it.

For example my table (Linn Axis...pretty robust on its own) sits on a low solid oak wooden table on top of concrete foundation with thin dense carpet and padding. Rock solid! Nothing picked up from speakers or sub between which it sits. First time ever I’ve achieved that! Never had the solid concrete foundation to work with prior.



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