> understand the 3 LEDs and selector switch portion of this?
Look at "both" schematics.
There are three inputs. Probably three L+R pairs.
There are three LEDs.
A 3pole 3-throw switch selects the desired one-of-three L+R audio pair and one-of-three LEDs which is more classy than just labeling the knob.
Look at "both" schematics.
There are three inputs. Probably three L+R pairs.
There are three LEDs.
A 3pole 3-throw switch selects the desired one-of-three L+R audio pair and one-of-three LEDs which is more classy than just labeling the knob.
