Avery's "First" Maker: The TA-800

Discussion in 'Fisher' started by dcgillespie, May 31, 2017.

  1. kcline

    kcline Tube Audio Collector Subscriber

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    That is one very good looking piece of Fisher gear
     
  2. Rob Thomas

    Rob Thomas AK Subscriber Subscriber

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    TA-800 Complete.jpg

    Thanks everyone! I think I was finally able to upload a decent quality photo as any pictures don't do this thing any justice. If anyone needs anything regarding a TA-800 such as measurements, additional pictures (not likely) or anything else that I may have uncovered through this process just let me know. I'm very grateful to everyone on AK that has helped make this such a successful project. I want to give back in any way that I can.

    Rob
     
  3. monkboughtlunch

    monkboughtlunch Super Member

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    Rob,

    Your receiver was a "cover girl" in Feb. 1961.

    fisher.jpg
     
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  4. Rob Thomas

    Rob Thomas AK Subscriber Subscriber

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    Doubt if that shelf is strong enough!
     
  5. larryderouin

    larryderouin You can be sure if it's Westinghouse??????? Subscriber

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    Really good article on the upcoming (for 1961) implementation of FM MPX in this edition. Page 37.
     
  6. Coffinlid

    Coffinlid New Member

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    Did anyone notice who the magazine is addressed to?
     
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  7. RS Steve

    RS Steve Tube Junkie Subscriber

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    I think Monc went through Rob's trash or something. :dunno:
     
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  8. larryderouin

    larryderouin You can be sure if it's Westinghouse??????? Subscriber

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  9. dcgillespie

    dcgillespie Fisher SA-100 Clone Subscriber

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    I was finally able to complete drawing out the schematic for the revised power amplifier design installed in Rob's TA-800. Also included on this page is the revised input network installed at the input to the first tone control stage, which is required to maintain the original sensitivity specification of the unit, in spite of the reduced gain of the new power amplifier design. The response specifications given are for the power amplifier design only, and mimic those of the original Fisher power amplifier section -- this to maintain the same aural presentation. The response of the tone control section remains as originally designed as well.

    For those with a TA-800 who are tired of jumping through the hoops necessary to find any acceptable 7199 tubes anymore, this eliminates that concern, and produces a dead quiet unit under minimum volume conditions. The revised power supply design is next up on the drawing board.

    Dave

    Revised Fisher 800 Power Amplifer.jpg
     
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