Aion Electronics Soma Vintage Overdrive Podręcznik - Strona 6
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BUILD NOTES
Transistor selection
The original SS-3 uses a BC549C transistor. The pinout on the Soma PCB is for the USA "E-B-C"
convention, e.g. 2N3904 and 2N5088. The 2N5088 will operate identically to the BC549C, but if you do
want to use the original transistors, just note that the pinout is different. Typically they would need to be
rotated 180 degrees, but check the datasheet for your brand as they do vary.
Bypassing the true bypass / buffer switch
The E-Switch EG4208 slide switch used for the true bypass/buffer selector is available from Mouser
Electronics but may not be accessible to everyone. If you are unable to obtain it, you can hard-wire the
switch to either true bypass mode or buffered mode by soldering jumpers to the switch pads.
Low Cut potentiometer
The 10kB dual potentiometer used by the Low Cut control is an uncommon value and not carried by any
of the major distributors. However,
Tayda Electronics has it available here
with very cheap worldwide
shipping.
SOMA VINTAGE OVERDRIVE
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