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Dr. Z 6545 Presence Control

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  • Dr. Z 6545 Presence Control

    I would like to add some means of dialing in some presence on this amp. Before I spend a pile of time reverse engineering the schematic, has anyone already done such? Any advice about the best way to go about adding a presence control to this amp? Any help is appreciated.

  • #2
    as far as I know, the presence control is a variable feedback look. So just add a NFB and use a pot in place of the resistor.

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    • #3
      Originally posted by jaydawg
      as far as I know, the presence control is a variable feedback look. So just add a NFB and use a pot in place of the resistor.
      I'll have a look at that. Not sure if there is NFB already on that amp or not (probably is). A good place to try some experiments I suppose - still have to reverse engineer the schematic from the chassis...

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