Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site mmintl.UUCP
Path: utzoo!linus!philabs!pwa-b!mmintl!tonyf
From: tonyf@mmintl.UUCP (Tony Faulise)
Newsgroups: net.audio
Subject: Radio-station turntables
Message-ID: <504@mmintl.UUCP>
Date: Fri, 19-Jul-85 11:09:19 EDT
Article-I.D.: mmintl.504
Posted: Fri Jul 19 11:09:19 1985
Date-Received: Wed, 24-Jul-85 05:40:33 EDT
References: <320015@acf4.UUCP>
Reply-To: tonyf@mmintl.UUCP (Tony Faulise)
Organization: Multimate International, E. Hartford, CT
Lines: 24
Keywords: sand-filled-box
Summary: Why mount tt on sand-filled box.



Recently someone mentioned radio-stations mounting turntables in
sand-filled boxes.  It's not to damp out turntable-generated
rumble but to prevent environment-caused rumble.

I worked as a techie in a college radio station and here's the
scoop :-)  If you're listening to your radio at home, you do not want
to hear the lump-lump of footsteps because someone just walked through
the sound booth.  So, we build a box of 3/4" particle board, hot-glue it
together, and fill it with 800lb. of sand ($64).  then we mount the tt
on top.  Preferably you cut a hole in your floor surface and let the 
box sit on whatever peice of your building supports your floor.

I have seen heavy (260lb) people jump on the floor during a broadcast
to demonstrate this insulating technique, it works.

also:
Studio turntables come up to speed in about 5 degrees of rotation.

+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Tony ("the meek and jumbled") Faulise
allegra!princeton!yoyo!faulise
ihnp4!philabs!pwa-b!mmintl!tonyf (till aug. 25)