[QuadList] Ampex AST heads and CMC DPT heads--what's

[rabruner at aol.com]

Yes that's right. Half the voodoo in setting up the AST servo is adjusting the gain and damping on the loop.
Bob Bruner
W9TAJ

----------------------------------------------------------------------
Date: Sun, 09 May 2010 13:44:34 -0400
From: Dennis Degan <DennyD1 at verizon.net>
To: Quad List <quadlist at quadvideotapegroup.com>
Subject: Re: [QuadList] Ampex AST heads and CMC DPT heads--what's
    different?


        I add:


    This would make the complete AST system a closed-loop servo.  The  
narrow piezo strip was the key to making it work.


            Dennis Degan, Video Editor-Consultant-Knowledge Bank
                        NBC Today Show, New York


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