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    240V transformers for Mark4

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    oolala007

    Posts : 4
    Join date : 2013-01-07
    Age : 52
    Location : RUSSIAN

    240V transformers for Mark4

    Post by oolala007 on Thu Jan 24, 2013 8:05 am

    Hello dear friends!
    Recently bought and Mark4 Pas3. I live in Russia. Tell me whether there are and where to buy transformers to 240V. As long as I use a step-down transformer, but with it there is a problem with the playback of the bass.
    Sincerely, Alex

    peterh

    Posts : 679
    Join date : 2012-12-25
    Location : gothenburg, sweden

    Re: 240V transformers for Mark4

    Post by peterh on Thu Jan 24, 2013 9:22 am

    oolala007 wrote:Hello dear friends!
    Recently bought and Mark4 Pas3. I live in Russia. Tell me whether there are and where to buy transformers to 240V. As long as I use a step-down transformer, but with it there is a problem with the playback of the bass.
    Sincerely, Alex
    Are you talking about one dynaco pas3 AND one or more dynaco mark IV ( 4 )

    I might help with a pas3 transformer ...

    oolala007

    Posts : 4
    Join date : 2013-01-07
    Age : 52
    Location : RUSSIAN

    Re: 240V transformers for Mark4

    Post by oolala007 on Thu Jan 24, 2013 11:14 am

    peterh, thanks for the offer to help, I'm interested to transformers DYNACO Mark IV.
    Regards Alex.

    Bob Latino
    Admin

    Posts : 2411
    Join date : 2008-11-26
    Location : Massachusetts

    Re: 240V transformers for Mark4

    Post by Bob Latino on Thu Jan 24, 2013 11:39 am

    Hi Alex,

    As far as I know - no one makes a 240 volt replacement transformer for the Dynaco Mark IV. I checked both the Dynakitparts and Triode Electronics web sites and neither site lists a 240 volt version of the PA-135 power transformer of the Dynaco Mark IV.

    Are you sure that the power transformer is at fault? If you get weak or distorted bass from your Mark IV, it could be a ptoblem with the high voltage power supply. Maybe the quad cap is weak ? If it is an original Dynaco quad cap, it should probably be replaced.

    Bob

    oolala007

    Posts : 4
    Join date : 2013-01-07
    Age : 52
    Location : RUSSIAN

    Re: 240V transformers for Mark4

    Post by oolala007 on Thu Jan 24, 2013 12:42 pm

    Hi Bob.I do not think that the problem with the quad cap ... 2 amp play the same way ... the bass is not controlled, not articulated it very much.
    How to determine the original Dynaco quad cap?
    Regards Alex

    Bob Latino
    Admin

    Posts : 2411
    Join date : 2008-11-26
    Location : Massachusetts

    Re: 240V transformers for Mark4

    Post by Bob Latino on Thu Jan 24, 2013 1:00 pm

    Alex,

    If you have a stock Mark IV with a stock driver circuit and the original 30, 20, 20, 20 uF quad cap, then uncontrolled and non-articulated bass is the nature of the amp. That is what stock Dynaco amps sound like ...

    My advice is replace the stock driver circuit with a modern upgraded driver circuit.

    Bob

    oolala007

    Posts : 4
    Join date : 2013-01-07
    Age : 52
    Location : RUSSIAN

    Re: 240V transformers for Mark4

    Post by oolala007 on Thu Jan 24, 2013 1:29 pm

    thanks Bob
    Necessarily follow your advice.
    Regards Alex.

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