Shannon Parks wrote:We should be able to get your Ikes pretty quiet. I'll throw one of my Ikes on the test bench this afternoon.
The important mod is step #1 here:
The mods here aren't as important. They just lower the gain to a more 'standard' gain level. So the noise floor isn't amplified as much.
But the "step #1 here" doesn't seem to link anywhere other than the build manual.
I tried the mod referred to in the post above:
Shannon Parks wrote:You can simply remove your input ground from J4-3 and swing it over to the ground of R7. You can solder at the unused R52. For reference, the ground side of those resistor spots is towards the center of the PCB.
but didn't really make a difference - in fact it might be worse.
Is there a definitive fix to reduce the background hum?