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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


5 posters

    Right channel does not sound nearly as loud as the left

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    GP49


    Posts : 792
    Join date : 2009-04-30
    Location : East of the sun and west of the moon

    Right channel does not sound nearly as loud as the left - Page 2 Empty Re: Right channel does not sound nearly as loud as the left

    Post by GP49 Tue Feb 09, 2010 6:25 pm

    You may wish to post the image to a hosting site such as Flickr or Photobucket.

    Those who are not members of Facebook (I do not wish to join ANY such social networking sites) can't see your photo.
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    xlr8


    Posts : 68
    Join date : 2010-02-09

    Right channel does not sound nearly as loud as the left - Page 2 Empty Re: Right channel does not sound nearly as loud as the left

    Post by xlr8 Tue Feb 09, 2010 6:39 pm

    Sorry about that. It was the quickest thing I could think of.

    I have to go out of town for work and have left my amp in the hands of a good friend while I'm gone. He knows much more about this than I do. Actually, he was the one that encouraged me to dive into one of these amps before I ever purchased the 2 I have now. If he figures out what's wrong before I get back, I will surely let you all know.
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    xlr8


    Posts : 68
    Join date : 2010-02-09

    Right channel does not sound nearly as loud as the left - Page 2 Empty Re: Right channel does not sound nearly as loud as the left

    Post by xlr8 Fri Feb 19, 2010 3:59 pm

    update:

    Turns out, capacitor C-2 was the culprit. Replaced that cap and the amp sounds great! The problem amp is now driving a pair of maggie mg3a ribbon tweeters and it's brother is driving a line array of 12 5.25 inch units.

    Thank you folks very much for your patience and advice. I will not complain one bit about a bad cap coming in one of my amps because the troubleshooting experience has been invaluable. I should have bought a cap tester before I started! Embarassed
    tubenutr
    tubenutr


    Posts : 78
    Join date : 2015-01-25
    Age : 66
    Location : Northern Ontario

    Right channel does not sound nearly as loud as the left - Page 2 Empty VTA 70 hum

    Post by tubenutr Tue Oct 13, 2015 2:27 pm

    I thought I had seen this discussed before, but can't find it.

    My '70 has developed a hum on both channels. With an ear about 6 to 8 inches away its very noticeable.

    Can anyone help point me in the correct direction?

    PS - Nothing has been changed, tubes, power bar, etc..................

    Bob Latino
    Bob Latino
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    Posts : 3260
    Join date : 2008-11-26
    Location : Massachusetts

    Right channel does not sound nearly as loud as the left - Page 2 Empty Re: Right channel does not sound nearly as loud as the left

    Post by Bob Latino Tue Oct 13, 2015 2:43 pm

    If this is a stock ST-70, it is possible that the quad cap might need to be replaced ..

    Bob

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    Right channel does not sound nearly as loud as the left - Page 2 Empty Re: Right channel does not sound nearly as loud as the left

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