i think that the westrex 45/45 system [for record cutting on lathes] is highly flawed. sure, it was based on the good work done by alan blumlein et al, but it was just not ready for prime time in the real world outside of the laboratory. an experimenter named Cook had a competing system which, while clunkier, had much better sound, it was essentially, in a technical sense, a "dual-mono" system where two styli each "concentrated" on their own groove, left channel or right channel, with none of the compromise/distortion involved in multiplexing two channels in one compound groove. the worst part of any phonographic system is the "pinch effect" caused by the reduced vinyl real estate in the inner grooves closest to the hub, which causes increased distortion and reduced treble fidelity headed towards the lead-out. the only way i can think of to fix that involves analog/digital trickery such as dynamic progressive compression/EQ as the record plays and the effective record speed decreases, increase the record/playback speed on the last record track to give the stylus more "breathing room," or some kind of compansion allowing for reduced groove modulation in general. if i designed it, i would have standardized a 45 rpm record/playback speed along with reduced modulation [reduces stress on the recording/playback hardware and increases playing time], and used some form of compansion such as the CX noise reduction process CBS implemented on its last LPs in the 80s. a version of cook's dual stylus scheme, where the outer grooves reproduce the sum while the inner grooves reproduce the difference, would have been interesting. don't mind me, just some geeky observations here ![Nerdy :nerdy:](./images/smilies/icon_nerdy.gif)