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    Pas 3 volume problem

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    Mikey1895

    Posts : 5
    Join date : 2017-11-10

    Pas 3 volume problem

    Post by Mikey1895 on Mon Dec 04, 2017 6:46 pm

    I have a tube Nirvana/Erhard audio aikido line stage and regulated power supply with 12x4 that lost volume control on one channel. It still plays music in that channel but the volume pot has no effect up or down it's just playing at low level. The other channel functions perfect. I've looked/checked everything I can think of at least twice except the volume pot it's self. I will check that later today but am hoping for a few ideas from the pros here as well.
    Thanks Mike
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    allenmmusic10003

    Posts : 14
    Join date : 2013-08-24

    Re: Pas 3 volume problem

    Post by allenmmusic10003 on Mon Dec 04, 2017 9:53 pm

    Was the volume pot functioning pre upgrade?

    Mikey1895

    Posts : 5
    Join date : 2017-11-10

    Re: Pas 3 volume problem

    Post by Mikey1895 on Mon Dec 04, 2017 10:25 pm

    Yes it was. After walking away from it for a bit I found the problem. Sometimes the simplest things are the hardest to see lol. Output from right channel from the Alps had ever so slightly grounded on the solder board while I had my paws inside moving wires. Thanks for responding

    Mike
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    erhard-audio

    Posts : 47
    Join date : 2017-04-07
    Age : 60
    Location : Tucson, AZ

    Re: Pas 3 volume problem

    Post by erhard-audio on Mon Dec 04, 2017 11:05 pm

    good to hear you got it all sorted out!

    Mikey1895

    Posts : 5
    Join date : 2017-11-10

    Re: Pas 3 volume problem

    Post by Mikey1895 on Mon Dec 04, 2017 11:16 pm

    Yes it was a complete brainfart on my part. Anyone who hasn't heard this preamp combo from you is missing out I love it! Quad of NOS Telefunken in the line stage connected to a Latino ST120 I built years ago is pretty sweet
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    GreggW

    Posts : 67
    Join date : 2015-07-15

    Re: Pas 3 volume problem

    Post by GreggW on Tue Dec 05, 2017 3:25 am

    Glad to hear someone else likes a PAS3. Mine is loaded with Holger's power supply, TCLA board, and ALPS pots. It's dead quiet and sounds magnificent with a ST120...

    Mikey1895

    Posts : 5
    Join date : 2017-11-10

    Re: Pas 3 volume problem

    Post by Mikey1895 on Tue Dec 05, 2017 9:42 am

    I love mine! It's not really a pas3 anymore as you know. I've upgraded my pre in just about every way you can think of and the amp all I've done is upgrade the coupling caps to mundorf silver in oil and a "matched" quad of KT120 output tubes. Dead quiet and sounds amazing to me
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    erhard-audio

    Posts : 47
    Join date : 2017-04-07
    Age : 60
    Location : Tucson, AZ

    Re: Pas 3 volume problem

    Post by erhard-audio on Tue Dec 05, 2017 2:06 pm

    thanks for the positive feedback guys. Yes, they are excellent circuits, not to mention excellent value for money!...although others here may disagree with that...but, each to their own opinions! Wink

    Mikey1895

    Posts : 5
    Join date : 2017-11-10

    Re: Pas 3 volume problem

    Post by Mikey1895 on Tue Dec 05, 2017 2:57 pm

    I wouldn't trade my gear for anything. Next project will be adding dueland caps, hookup wire and resistors
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    peterh

    Posts : 1068
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: Pas 3 volume problem

    Post by peterh on Tue Dec 05, 2017 6:30 pm

    To be correct; this discussion is not about a PAS 3 , it's something built into a PAS chassie replacing
    the dynaco design with something else.
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    erhard-audio

    Posts : 47
    Join date : 2017-04-07
    Age : 60
    Location : Tucson, AZ

    Re: Pas 3 volume problem

    Post by erhard-audio on Tue Dec 05, 2017 6:34 pm

    peterh wrote:To be correct; this discussion is not  about a PAS 3 , it's something built into a PAS chassie replacing
    the dynaco design with something else.

    that is very true. However, just about everyone refers to it as the PAS2, or PAS3 or PAS3X, even when either heavily modified or completely rebuilt.
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    allenmmusic10003

    Posts : 14
    Join date : 2013-08-24

    Re: Pas 3 volume problem

    Post by allenmmusic10003 on Thu Dec 07, 2017 7:28 pm

    Enjoy the preamp. I love mine!

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