Mitigating far away resonance frequencies

[Sineos]

@mnester

I have tried turning ON and OFF interpolation, stealthchop; increasing and decreasing the amps on the motors; increasing and decreasing the speed of the print… and nothing has affected it much.

I thought that switching to 48V would help the steppers mitigate vibrations faster, but it had no effect at all.

All these points do not have an influence IMO.
According to my experience the combination of:

• High vibration at very low frequencies
• Pretty low power spectral density

are indicative of mechanical issues. See Input Shaper without effect?! - #14 by Sineos for another two examples from which I know for sure that it have been mechanical issues.