[QuadList] VTR introduction anniversaries: 1965

[Guy Spiller]

I seem to remember the VR-2000B that I worked with back in the day, also 
had tubes in the four record amps....similar to the early TR-70s.
Seems like those big tube record amps were one of the major differences 
between a 1200 and a 2000.
But, then again, my memory may need recapping.
Guy

On 2/10/2011 8:39 AM, Chill315 at aol.com wrote:
> I got the brains working a little better.
> The tubes in the VR-2000 were in the Mark 10 head pre-amp.  These were 
> the four Nuvistors.  Don't see those any more.  The manual that came 
> with my 1200 talked about shorting bars in the head pre-amp to reduce 
> the gain.  I have no idea how that worked.
> There TR-70 had a modification kit for the machine to replace a tube 
> driver in the record amps.  It was something I remember the U of M 
> Dental school operator showed me.
> Those were the only tubes that I am aware of other than the scope and 
> monitors in the units.
> The audio was transistorized as stated in another reply.  There were 
> several modification bulletins for this part of the machine.
> Chris Hill
> WA8IGN
> In a message dated 2/9/2011 11:12:09 P.M. Eastern Standard Time, 
> park at videopark.com writes:
>
>     Did the audio in the 2000 use tubes?
>
>     Best,
>     Park
>
>     Sent from my iPhone
>     818-535-2747 cell
>     (541) 476-6657 hm
>     2" and 1" video transfers
>
>     On Feb 9, 2011, at 7:19 PM, Chill315 at aol.com
>     <mailto:Chill315 at aol.com> wrote:
>
>>     I remember
>>     Also If I remember, the VR-2000 used tubes in the record
>>     drivers.  I never got a chance to look at the books.
>>     Visual sold a lot of stuff that was made up of other manufactures
>>     put together into a package for the US.
>>     Chris Hill
>>     WA8IGN
>
>
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-- 
Guy Spiller
email: quadruplex at verizon.net
phone: (804) 379-2050
website: www.GuySpiller.com
Midlothian, VA

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