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

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

has2be's avatar
has2be
555 posts
 
"The rack is very stable and there`s less vibration on it than being bolted to a large vibrating wall."

The wall racks are meant for an outer weight load bearing wall. If you have a large vibrating wall sitting on concrete it's not an outer wall.....if it is....buy a new house....😜
I'd be willing to bet that vid that miller posted if it was your rack the amplitude running up and out it would shock you coming up through the concrete floor...
If it's airborne your dealing with  ( sounds like it ) you have bigger issues with the room than where the table is....and yes the guys with a nice headphone set up and that's how they listen....It certainly has its positives to it with less negatives to run you around...those high school days late night bedroom listening with headphones at the start of the 70s were much better than just necessity when one thinks about it.....relative to the hoops we jump through now....
The two subs....it can work exceedingly well when done right...
Cheers
mulveling's avatar
mulveling
1,959 posts
 
Have to say the Townshend guy’s videos make an awful lot of sense. MC is making a lot of sense on this too. Slap your table on one of those platforms and I bet most problems go away - unless maybe your table’s sitting in a bass node/resonance/peak spot for your room? How much have you experimented with moving your rack’s position (I mean just a bit, not into a different room)?

I’ve been into high-end headphones for a while and they’re wonderful but they can’t match nor eclipse a great speaker/vinyl system IMO. The problem is dealing with room acoustics and vibration feedback. When I had a SOTA Star/Nova table (built-in spring suspension tuned exactly for itself), the vibration feedback into it was literally never any worry. Things got a LOT harder when I got a Clearaudio table. But still, I found I didn’t have any airborne feedback issues of note, even with my HUGE Canterbury speakers played loud, once the ground & structure borne vibration was addressed via rack/etc. Then again I also don’t have 3 subs (I know they are supposed to smooth out bass nodes, not make them worse)!
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