...and here is the op amp channel.
(might to a complete layout for both channels if there is interest. It will require some extra offboard wiring due to two separate bypass switches and an order switch....)
Tuesday 3 October 2023
Death by Audio Assault System - Transistor channel
An old super rare DBA pedal which was a two channel fuzz. Here is the transistor channel which resmebles most older DBA designs; cascaded reverse beta transistor gain stages. Socketing your transistors is a must since you need to find ones that doesn't gate too much. Also, there is a Filter control which is a variation of twin notch filter. Shape control is a simple ground lift for the filter circuit.
A big thank you to Nils at Moonn Electronics for the trace!
Schematic is avaiable HERE.
Grind Custom Fx Tenebrion Reverb
Based on the Box of Hall circuit but tuned a bit darker and wider range for the Tone and Feedback controls.
Schematic is avaiable HERE.
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