The Dynaco Tube Audio Forum

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The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Tubes4hifi VTA tube amp and preamp kits and all Dynakitparts.com products


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Peter W.
corndog71
slate1
7 posters

    This VTA stuff is addictive....

    slate1
    slate1
    slate1


    Posts : 58
    Join date : 2017-07-26
    • Post n°1

    This VTA stuff is addictive.... Empty This VTA stuff is addictive....

    Post by slate1 Thu Aug 24, 2017 6:18 pm

    I've had my ST-120 (beautifully built by audiobill) for about a month... already ordered an SP-13 preamp built by Roy (with Mundorf silver-oil PIO caps and Khozmo 64 step remote control volume) which I don't even have and I've been eyeing ordering a PH-16 all week! Laughing
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    corndog71
    corndog71
    corndog71


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    Location : It can get windy here
    • Post n°2

    This VTA stuff is addictive.... Empty Re: This VTA stuff is addictive....

    Post by corndog71 Thu Aug 24, 2017 11:08 pm

    Yep. I recently picked up a used pair of M125 amps. I'm working on rebuilding them with a different look / layout.
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    Peter W.
    Peter W.
    Peter W.


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    Join date : 2016-08-07
    Location : Melrose Park, PA
    • Post n°3

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    Post by Peter W. Fri Aug 25, 2017 7:55 am

    slate1 wrote:I've had my ST-120 (beautifully built by audiobill) for about a month... already ordered an SP-13 preamp built by Roy (with Mundorf silver-oil PIO caps and Khozmo 64 step remote control volume) which I don't even have and I've been eyeing ordering a PH-16 all week!  Laughing

    And, if questioned by the SO, just tell them that it doesn't eat, keeps you close to home, and is cheaper than another woman.
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    deepee99
    deepee99
    deepee99


    Posts : 2244
    Join date : 2012-05-23
    Location : Wallace, Idaho
    • Post n°4

    This VTA stuff is addictive.... Empty Re: This VTA stuff is addictive....

    Post by deepee99 Sat Aug 26, 2017 8:59 pm

    Peter W. wrote:
    slate1 wrote:I've had my ST-120 (beautifully built by audiobill) for about a month... already ordered an SP-13 preamp built by Roy (with Mundorf silver-oil PIO caps and Khozmo 64 step remote control volume) which I don't even have and I've been eyeing ordering a PH-16 all week!  Laughing

    And, if questioned by the SO, just tell them that it doesn't eat, keeps you close to home, and is cheaper than another woman.
    Yeah, right. Then explain those two walls of shelving with tubes on them!
    I have a deal with the UPS guy; he delivers late at night from his route back from Montana, no smuggling here. Quiet thump on the doorstep and all's well.
    "Just lettin' the dog out, darlin',"
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    sKiZo
    sKiZo
    sKiZo


    Posts : 1530
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    Location : Michigan USA
    • Post n°5

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    Post by sKiZo Tue Aug 29, 2017 12:29 pm

    Was in hospital and rehab for three months due to a major motorcycle accident, and first thing I did when I got home was crank the ST120 up and let er rip ... really missed it!
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    deepee99
    deepee99
    deepee99


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    Location : Wallace, Idaho
    • Post n°6

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    Post by deepee99 Tue Aug 29, 2017 12:31 pm

    sKiZo wrote:Was in hospital and rehab for three months due to a major motorcycle accident, and first thing I did when I got home was crank the ST120 up and let er rip ... really missed it!
    You mean they don't put tubes on those little hospital carts anymore?
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    sKiZo
    sKiZo
    sKiZo


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    • Post n°7

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    Post by sKiZo Tue Aug 29, 2017 3:42 pm

    All kinds of tubing, but no tubes ... ;-}

    The great thing was firing it up after all that time and just having to make slight adjustments on bias after it had warmed up ...
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    Bob Latino
    Bob Latino
    Bob Latino
    Admin


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    Location : Massachusetts
    • Post n°8

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    Post by Bob Latino Tue Aug 29, 2017 5:20 pm

    sKiZo wrote:All kinds of tubing, but no tubes ... ;-}

    The great thing was firing it up after all that time and just having to make slight adjustments on bias after it had warmed up ...

    sKiZo,

    Glad to hear that you have recovered from your accident ..

    Re: Bias adjustments -  The bias will go up and down as your line voltage goes up and down. If your line voltage is 120.0 VAC one day and the next day it is 119.5 VAC, the bias voltage will drop slightly on all the output tubes. Some VTA amp users get worried when the bias fluctuates slightly. Some places in the USA have pretty steady line voltages. Other places do not. The key here is that ALL output tubes will go down when the line voltage goes down. You should not worry about this as this is normal. If, however, ONE TUBE has a serious change in bias while the others stay pretty much the same, then that is usually an indication that there is a problem with either that tube or that tube socket.

    Bob
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    wgallupe
    wgallupe
    wgallupe


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    Location : Central Mass.
    • Post n°9

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    Post by wgallupe Tue Aug 29, 2017 7:20 pm

    sKiZo wrote:Was in hospital and rehab for three months due to a major motorcycle accident, and first thing I did when I got home was crank the ST120 up and let er rip ... really missed it!

    Wow, sorry to hear about your accident. Three months! Hope all is OK. Take care.
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