his047

@Thomas_A: the horizontal bearing is a clipped ball bearing pre-soaked in silicone oil, so there is nothing to change there. I do not...

Speaking about the UP4, Mørch told me that the first prototype had a resonance (he did not specify at which frequency). This was cured...

The Denon contains pure left and right signals (i.e. +/-45°), so these will excite both horizontal and vertical resonances at the same...

So if I understand you correctly, the Denon Record contains Lateral +45° and Lateral -45° f-res sweeps. The Feickert Adjust+ has Lateral...

Yes, this lateral is confusing, sorry for that. I made the UP-4 recording at another time point and named the files differently. It is...

I am confused about the graphs: the graphs for the DP8 reference 'left' and 'right' channels while the graphs for the UP4 reference...