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Simms watts 200 question

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  • #16
    It will take only 5-6 volts aroud on input to get power tubes full drive
    Yes, an additional loop gain of around 10. What is it good for?
    Last edited by Helmholtz; 03-09-2020, 10:30 PM.
    - Own Opinions Only -

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    • #17
      This power stage cannot be pushed into overdrive, at least into actual configuration. It is a pretty clean amp. As time did not benefit by a hefty driver is hard to believe the grids can be pushed enough as it was designed.I trying to mod it in some more usable for guitar.
      "If it measures good and sounds bad, it is bad. If it measures bad and sounds good, you are measuring the wrong things."

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      • #18
        Originally posted by catalin gramada View Post
        This power stage cannot be pushed into overdrive, at least into actual configuration. It is a pretty clean amp. As time did not benefit by a hefty driver is hard to believe the grids can be pushed enough as it was designed.I trying to mod it in some more usable for guitar.
        Can you please show a scope shot ( with x and y axis scales specified) with the output driven as hard as you can with a 1Khz sine wave. The idle DCV at the PI plates and 6550 grids will be helpful too.
        Experience is something you get, just after you really needed it.

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