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aes pt-31

  1. happybear

    SE Tube Amplifier : Project Preview ...

    This SE tube amplifier project is currently a work-in-process. The PT came from a Westinghouse phono console that supported (2) 6V6, a few 12AX7's and a 5Y3 rectifier. On order are (2) NOS AES PT-31 SE 5K/8 OPT's. No final decision has been made regarding the signal circuit on this project...
    • happybear
    • Thread
    • aes pt-31 dg se1 magnavox se tube amplifier
    • Replies: 17
    • Forum: Tube Audio
  2. happybear

    SE 6AQ5 with AES PT-31 OPT

    SE 6AQ5 with AES PT-31 OPT. The OPT's are older units, not the current production. 5751 driving stage. There were some issues regarding load dependent stability while figuring out the feedback circuit. Grid stop resistors and Zobel network across OPT resolved the stability problems. RT...
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