Same idea here, with a prototype disc from the (British) Gramophone Company... it is vertical cut and center start: http://www.phonobase.org/9340.html Henri CHAMOUX The many adventures of the Archeophone phonograph : http://www.archeophone.org/windex.php Le 07/11/2019 à 17:47, Lou Judson a écrit : > I don’t do disc, only tape, but a though occurs - why not try it with a stereo cartridge wired for stereo and look at the waveform? Maybe that one is not vertical? > > <L> > Lou Judson > Intuitive Audio > 415-883-2689 > >> On Nov 7, 2019, at 7:52 AM, 6295LARGE . <[log in to unmask]> wrote: >> >> The cartridge is wired out of phase. That's why most of the other EDDs >> play beautifully. >> Thanks, >> Ben >> >> >> On Wed, Nov 6, 2019 at 5:34 PM Dennis Rooney <[log in to unmask] <mailto:[log in to unmask]>> >> wrote: >> >>> Dear Ben, >>> >>> Is your M44 stereo cartridge wired out-of-phase? It has to be that way to >>> ensure optimal vertical pickup. >>> >>> DDR