HELP Needed MC OH/HH /Cymbal real quiet

Discuss Yocto construction and related issues
  • you could check the actual supply rails to those opamps, but they're probably fine
    did you check the resistors on the IO board? they are used as passive mixing, so they set the actual mixing gains

    the signal around there is probably gonna be weak, so you could check if there's something maybe pulling the weak signal towards ground or the supply rails...
    when power is off, measure the resistance from ground (or from +15, or from -15) to a given point - if it's very big - it's probably okay, but if it's low.. or very low then there could be something wrong (but this is best done by also looking at the schematic)
  • Thanks for the reply.

    Got this fixed today :)

    The resistors to ground from u3 where 560k instead of 560r.