V2a
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    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      Next problem: EL34s draw more heater current. Solution: replaced stock 22AWG heater wire with 18AWG wire.
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    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
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    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      OT primary impedance measures 3k8 - perfect for EL34. Problem: stock octal socket (left) was missing Pin 1, which is need for EL34...
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    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      The initial build. - ultra-fast diodes added to rectifier. - adjustable fixed bias - current-sense resistors added for bias measurements...
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    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      The stock amp had a coupling cap between (each) input jack and grid of first gain stage. Initially, I kept that in there. Used shielded...
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    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      PS. this will compete with Friedman Vintage but will not cost 3k. It'll be closer to 2204 than 1987, however.
    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      Eyelet board cleared and cleaned. New components/circuits loaded onto the right side of the board, including new caps for negative bias...
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    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      If you have a chance, pick up a YBA-4. Thank me later....
    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      The stock amp uses 7027A tubes. The octal tube sockets didn't even have terminals for pin1. But the primary impedance of the gigantic...
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    • V2a
      V2a replied to the thread Traynor YVM-1 to YVR-1 mod.
      Obvious first steps: replace original filter caps and two-prong cord. But who wants to deal with a permanently attached power cord...
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    • V2a
      V2a posted the thread Traynor YVM-1 to YVR-1 mod in Rig-Talk.
      YVM = Yorkville Voice Master YVR = airport code for Vancouver, which is where I am located. Bought this amp on a road trip. 1967. Four...
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