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TT to another room, no vibs, better sounds?


Hi All,

A few years ago I thought I'd build a Turntable that is still about a year from being finished. The thought was mass is where it's at. If it's heavy it will take more energy to get it excited and vibrate.

After I picked up a few thousands dollars in parts my machinist asked me what I was trying to accomplish. My response was," The heavier it was the less it would vibrate."

He said, " Take it out of the vibrational environment and save money." I can do that soon and wonder if anyone else had the same thought and realized a cost effective improvement instead of spending more money on a better TT.

"Out of the mouthes of babes," Your thoughts,

ken
kftool

Showing 2 responses by ianlane

ianlane
11 posts
 
Hi everyone,

I have been reading posts here for years, not having much that is new and useful to say. Maybe some will find the following approach useful:

When renovating our home we added a combined work/listening room with a suspended floor with an opening near one wall. This allowed a one ton concrete base (for my equipment stand) to be poured on the ground and be separate from all structures in the room. Cabinets were then built along that wall thereby enclosing my front end gear. The equipment stand space is lined with foam absorption.

This way I get effective isolation from structure borne vibration (at least from within the room) and some transmission loss from airborne vibration. I guess the cabinetry would offer reasonable WAF also. Fortunately I do not live near heavy industry or main roads or freeways.

I could make improvements with extra mass lining the MDF walls and doors of the equipment space. My equipment stand is nothing special - welded steel with sand filling where possible. No doubt this could be improved also.

I use tube power amps for my main speakers and found benefits in reducing microphonics by placing these power amps in with the front end as well. Fortunately they do not give off too much heat.
ianlane
11 posts
 
Further to the points made by Mafuta and Dougdeacon :

My approach makes no sense if there are continuous or contiguous rigid surfaces or substrates on the ground between sources such as nearby vehicles or industry and the receiver point, where our audio equipment stands are. In my case the concrete base sits on the soil that lies under the listening room.

Unless you are listening in a house next to a freeway or heavy industry, I would say that vibrations affecting your audio gear generated from your speakers will greatly exceed those vibrations that are ground borne.

To be as comprehensive as possible, dedicated suspension systems for individual components and/or suspension of the whole isolated equipment stand base - as is often used for electron microscopes, could be tried.
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