The Dynaco Tube Audio Forum

Would you like to react to this message? Create an account in a few clicks or log in to continue.
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


2 posters

    Gooey Chokes

    avatar
    scsidude2


    Posts : 21
    Join date : 2010-03-19
    Age : 35
    Location : Dekalb, IL

    Gooey Chokes Empty Gooey Chokes

    Post by scsidude2 Mon Apr 12, 2010 11:40 am

    I've noticed the chokes on both my st-70's look a little grungy and dilapidated. I was wondering if there was an easy way to test them and make sure they're operating at the level they should be. Thanks everybody! -Ryan
    Bob Latino
    Bob Latino
    Admin


    Posts : 3114
    Join date : 2008-11-26
    Location : Massachusetts

    Gooey Chokes Empty Re: Gooey Chokes

    Post by Bob Latino Mon Apr 12, 2010 3:05 pm

    scsidude2 wrote:I've noticed the chokes on both my st-70's look a little grungy and dilapidated. I was wondering if there was an easy way to test them and make sure they're operating at the level they should be. Thanks everybody! -Ryan

    Hi Ryan,

    Even though the choke may be a little "grungy", it is probably still OK. The way to test them is to measure the resistance across the two leads that are attached to the quad cap. If you measure between 50 ohms and about 65 ohms the choke is fine. If the choke is open (infinite resistance) the amp won't work.

    Bob
    avatar
    scsidude2


    Posts : 21
    Join date : 2010-03-19
    Age : 35
    Location : Dekalb, IL

    Gooey Chokes Empty Re: Gooey Chokes

    Post by scsidude2 Mon Apr 12, 2010 3:23 pm

    Thanks Bob, i figured they were fine as the amp sounds great but just wanted to make sure. -Ryan

    Sponsored content


    Gooey Chokes Empty Re: Gooey Chokes

    Post by Sponsored content


      Current date/time is Thu Jan 20, 2022 9:13 am