File:Atmos - Green-Ringer-based octaver with extra LED clipping (2007-02-05 21.45.11 by germanium).gif

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Atmos, a Green-Ringer-based octaver with extra LED clipping.

  • Sound clips in my octaver pedal shootout.
  • R4 is a 390 Ohm resistor and a 5 K pot to ground.
  • R14 can also be a 50 K pot for a variable high-pass filter.
  • hFE of the transistors I used was approximately 500, 600, 500.

One idea was to get as much of the signal to the first clipping stage as possible (large capacitor values), then cut some bass before the rectification to make the signal more uniform and make it "glue together" better (smaller capacitor values) and then use larger capacitor values again to keep the subharmonics.

  • The 2.2 pF value for C3 was chosen to move the distortion outside the bass and the lower mid range. 1 pF also works but is not as crunchy. Higher values might also sound good.

Read Dan Armstrong "Green Ringer" /// Clone and Mods for the components that should be matched.

Flickr Tags: atmos green ringer dan armstrong octaver octave-up octavio effect diy schematics circuit transistor capacitor resistor effector guitar effect effects guitar effects effects pedal.

from Flickr album "Electronics" by germanium

"Building, modifying or repairing guitar amplifiers and effects myself."

References
Date
Source Atmos
Author germanium from Eichwalde, Germany

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This image was originally posted to Flickr by germanium at https://flickr.com/photos/97468729@N00/380944765. It was reviewed on 31 July 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

31 July 2015

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