Hello
Thank you for your answer, and sorry for the late reply, for some reason i didn't get the reply notification.
In all the drawings, ground relies on getting its connection through the chassis. I wouldn't count on always getting a reliable connection that way, so I would simply run wires connecting all ground points together inside the box.
In the meantime, i have updated the design with grounds wires in a "spider web" configuration.
(there is an error with the potentiometer's label, which are swapped).
The effects send jack doesn't mix any signals, so you don't need the extra resistor there.
Ok, but does it make any harm to the circuit if i keep it ? (not that i want to keep it, but i'm trying to understand better the consequences).
Resistance values are very high, which makes sense if you are running directly from a guitar. If the inputs are buffered at least once, I would make the pots and series resistors 5-10 times smaller.
Ok, interesting point.
I borrrowed the resistor values from the Beavies Audio schematic.
500k for the potentiometers is used to avoid treble loss.
I am planning to use it mainly with synths and drum machines (so everything should be line level), but maybe also with a passive electric piano so, a bit like a guitar).
Therefore, my questions would be :
- Is there any "once size fits all" resistor value (suitable for both synths and passive instruments) ?
- Is there any issue or risk by keeping these values (like more noise, hum isues, etc) ?
