Closed Thread
Results 1 to 3 of 3

Reload Thread: Testing Tubes

  1. #1
    modskwod's Avatar
    modskwod is offline CarAudio.com Elite



    Join Date
    Nov 2008
    Location
    MN
    Posts
    1,027
    Post Thanks / Like
    Mentioned
    0 Post(s)

    Testing Tubes

    I recently found an old 1960s era tube amp that my grandfather built, and I hooked it up to a speaker I had laying around to see if it worked. Lo and behold, the thing worked! Unfortunately, there was a massive hissing sound coming through from somewhere.

    So, I opened it up and first thing I noticed was a pair of capacitors had exploded. I ordered the equivalent from parts-express, and am currently waiting for them to arrive. I am hoping that the new caps fix the problem.
    However, I would also like to know if there is a way to test the tubes as well, just in case they are the cause.

    Thanks!




    **REFS**
    Bought from: AudioPipe (Formerly TheLow, then Warden, then DCSoundLab), audio_phill, ciaonzo, enemyofsilence (CACO)
    Sold to: wccoug21, ChrisB (DIYMA)
    Traded with: supermaxx123, chithead (DIYMA)




  2. #2
    Slo_Ride's Avatar
    Slo_Ride is offline Midnight Rider



    Join Date
    Oct 2005
    Location
    Atlanta
    Posts
    7,796
    Post Thanks / Like
    Mentioned
    3 Post(s)

    Re: Testing Tubes

    JimJ would be your man for this question, he knows a good bit about such.
    Last edited by Slo_Ride; 12-27-2009 at 10:34 PM.



    Refs = PapaGeno21, Goindef154, 92c1v1c, Disarmer, chemmins, 97maxima, kroid777, ithertz, basscort2009, hunterw, mar08052, appleyard, millimac247, jonny101abc, sundownz, cranberryyumyum, mig139, daboyfrumdabx, skateguy92, basebalz13.

  3. #3
    JimJ's Avatar
    JimJ is offline Tangled Up in Blue



    Join Date
    Jun 2004
    Location
    Hillsborough, NC
    Posts
    31,680
    Post Thanks / Like
    Mentioned
    1 Post(s)

    Re: Testing Tubes

    As you found out, electrolytic caps are usually the first things to go from something of that age.

    A good tube tester is not a cheap piece of gear, so I wouldn't really bother with trying to test the ones you have.

    Do you have a pic of the amp? If you don't have a use for it, I might




Closed Thread

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts

1e2 Forum