[QuadList] Anamoaly on Rockethub Page

[Don Norwood]

Hi Chris:

Not certain about the VR-1000 but I have seen Mk-III heads with the manual positioner installed although they could have been for the 1100.

The guide servo was not available for the VR-1100.  As you point out, the manual positioner was available for the Mk-X used on those machines, and in fact, the X was required for most of the 1100's beyond the early production units which used the Mk-III.  All later 1100's had an additional chassis with the individual channel adjustments and included a label on the deck plate stating that a Mk-X head was required.

The guide servo was an option on the VR-1200, although I've not seen one without it except in catalog pictures.  The 1200E does not include a control on the operator panel, so I assume it was not offered and certainly wasn't needed for recording.  I suppose a studio machine used only for recording would have no need for one either, so maybe some 1200's were sold in that configuration.

There is however, a definitive way to determine if the head shown in the pictures is a X or a XV.  Only the machine-mounted head in the next to last pic is a XV.

Don Norwood
Digitrak Communications, Inc.
www.digitrakcom.com  
  ----- Original Message ----- 
  From: Chill315 at aol.com 

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  The first guess would be that the head has a manual guide adjuster on it.  This was on the Mark 15 heads.  

  But there were some machines that may have not used the auto guide assembly.  I say this as the guide was listed as an accessory in the set of books.  

  So does anyone know if there was a machine that did not have the electronic guide assembly in the VR-1000, 1100, or 1200 series.  How about the E models that were the low boy so called portable units?  Or the 1100's?

  Now Mark 10 heads could be used in earlier machines.  There was a trimmer module that replaced the nuvistor or transistor pre amp that allowed this.

  Chris Hill
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