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 11 responses by scm

The rack is very stable and there`s less vibration on it than being bolted to a large vibrating wall.
 
I`m sure things would improve if I could put the TT in another room but that would be impractical.

Fortunately I listen at very modest levels..
Maybe, I can put some treatment around the TT and see how that goes.

 
mapman..." He can stamp on my concrete all he wants and nothing will happen.  Guarandamteed.  "

TRUTH
I`m going to try and isolate the TT somehow, using acoustic foam of some sort.
Not going to ditch the table for another one that`s for sure, sorry.

As always, you guy`s come through with pretty good even great advice. 
  
I remember back when I used to record my lp`s to cassette, I could very   loudly talk right at the cartridge while recording and I could hear my voice  on the tape afterwards.
That's what is happening here I`m pretty sure.
It's not mechanical IMO

millercarbon...
I`m talking about feed back/added content that`s coming through the air and getting picked up, not mechanical feed back like floor bounce, footfalls etc..

chakster...
I have some room treatments. I have four..4" thick 2'x4' panels and two 2" thick 2'x4' panels that I use at the first reflection points.
I have a carpet that`s 8' x 10' on the tile floor.
I could probably use more treatment.
I kinda envy the headphone crowd on certain levels and have never thought about that before until now  
The clarity and detail they must hear in a nice setup with really nice headphones must be pretty amazing.
No room resonance, no outside interference at all, none of that.

chakster..
I`m contemplating adding 2 more subs which, in theory, should eliminate the need for a lot of bass traps scattered about 

audioguy85
  "...Take some rubber grommets and use however many between the wall and the turntable shelf..."

I actually used dense rubber matting about 1/8" thick between the two bolts I used to attach the Rega rack onto the center "spine" of the equipment rack.
I wish Agon allowed pics...