Monday, 3 January 2022

Catalinbread Karma Suture

Catalinbread has released two versions of the Karma Suture, one germanium and one silicon based. Both at their hearts are simply a modified Harmonic Percolator. I think Catalinbread described it best on their site:

A bubbling cauldron of even-order harmonics!

The only change I made in the layout from the schematic is I added a 100uF cap from power to ground to assist in power filtering. Schematic can be found here. Enjoy my fellow fuzzheads.

Catalinbread Karma Suture (Ge)

 


 


Catalinbread Karma Suture (Si) 





8 comments:

  1. I could never get my home-brewed/imagined versions of this circuit in the ball park of the demos for the karma suture. Stoked to build this one, thanks for posting!

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  2. I had a reverse polarity question. D1 is positioned 9v to Cathode and Anode to ground. I assume this is an alternative to a series diode with 9v to Anode as a way to avoid the voltage drop?

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    1. I think D1 orientation on this layout may be an error. Look at the Calliope schematic on Aion FXs website which curiously varies slightly from the one posted on the link above.

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    2. this isn't based on the Calliope pedal, it's based on the schematic of the actual pedal that was created by aionfx as linked in the post. the diode is in the correct orientation as per the schematic, cathode to +9V and anode to ground.

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  3. Ah, yes. I get it :) Thanks Zach

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  4. Built the layout as drafted, works great! Thanks again for sharing!

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    1. This comment has been removed by the author.

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  5. Ge. Used a Russian IT320b ECB tranny @ 50 hFE and a TO-18 2N2222A

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