Hi all, I have a funny thing with my A25 which i would greatly appreciate to have explained by someone who understands guitar physics.
When putting on a capo on the 4th fret in DADGAD there appears a dead spot on the 6th (low) string 5 frets up from the capo. This is a fretted note that is fine without the capo, but becomes dead (sustain decreases dramatically) when I put on the capo. When I move capo to 5th fret, dead note disappears, instead it seems to relocate to 5th string 7 frets from capo.
Now how can a fretted dead note appear and move like this with the capo? I am fretting it at the same place irregardless of capo position (the absolute position on fretboard doesnt change), it is not an open note, but the capo seems to affect it anyway.