Sunn 100s with trem, reverb, and mid switch?

[shibbz]

Anyone have a schematic for the Sunn 100s with the tremolo, reverb, and the mid boost switch?
My tech couldn't find one, and neither could Conrad.

(that last knob is a master volume)

[EdBass]

I might have one, but I’m not currently in the same zip code as my schematics. But I’ll betcha a donut that the schematic is identical to the Sceptre or Sentura II that have mid switches.
I would imagine that your tech could use the 100S, Sceptre, or Sentura II schematics here ( http://sunn.ampage.org/site/schematics/ ) although they don’t seem to have mid switches.

[pickinatit]

Is the Solarus closer?  It has trem., reverb and the mid-boost switch (the piggy back head anyway).

[loudthud]

The 190L was the last of the 60W trem/reverb 6550 tube heads. A schematic can be found in this thread:

http://sunnforum.ampage.org/sdp/index.php/topic,4772.0.html

Note that the tremolo/reverb board might differ in your amp and the position of the LDR in the circuit might also be different. In earlier amps, the tremolo was before the reverb, in later amps it was after the reverb so you could get a simulated echo.