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thumping

  1. P

    Velodyne ULD-15 Subwoofer - Thumping/Refoam/Shim

    Hi All - I'm new to the group and just got (for free) a Velodyne ULD-15 Subwoofer Series II that has no foam. It was posted (from the daughter of the original owner) a properly working when put into storage 4 years ago and other than the foam looks in mint condition (beautiful cabinet and amp...
    • Pete.Schmidt
    • Thread
    • problem refoam repair series ii servo shim thumping velodyne uld-15 subwoofer
    • Replies: 10
    • Forum: Speakers
  2. James Cox

    Pilot 240 motorboating

    Alright so ive got a real stumper here. I purchased a pilot 240 integrated tube amp a couple of years ago from a kid on clist who had been using it as a bass guitar amp. When i got it one of the powertubes was redplating and there would be a crazy thumping, motorboat sound. This was my first...
    • James Cox
    • Thread
    • help integrated amp motorboating pilot redplating repair thumping tube
    • Replies: 49
    • Forum: Tube Audio
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