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Hello,
Has anyone compared classic records vinyl with original 50's 60's first pressings? Does anyone know if they use tube amps to cut masters (record cutting head amps..that is)? I started buying Vinyl again after listening to some old pressings of lp's (50's to mid-70's). After designing and building audio gear for recording for 20 years, I tried to get the closest sound to the source that I could by concentrating on cleaning up the digital converters , and just stopped thinking about the whole vinyl vs. LP thing years ago when I sold my records. I remember reading an old MIX magazine article where Bernie Grundman (Ibelieve) Was saying that first generation laquers were superior to digital, and that LP's had an extended freq response etc. etc. but a letter to the editor in a successive issue illustrated that most home users could not afford a high end system that could compete with CD fidelity -- wise. I was one of those home users. After years of recording sound, building preamps and experimenting with tubes and transistors (fet or otherwise) I realized that there was something more compelling about tubes and something that made the music sound more distant with transistor circuits. Make a simple amplifier with a triode (a good large plate w/ no feedback) and you get a little thd etc. , but an accurate sonic and musical image. Make a simple amp with a transistor and you will most probably want to connect another transistor in series (to use in a negative feedback configuration) in order to get rid of the nasty harsh distortion characteristics. You will then experience more loss of detail and phase incoherence, although the added harmonics will be reduced. This is due to the fact that negative feedback works well in theory but can only work 100% when the input and output of the signal are constantly aligned in the time domain (including during sharp transients in the waveform) Negative feedback in slower amplifiers (transistors included) causes distortion of transients. So the most musical designs to me are the simple tube amps with very high quality components. Getting back to vinyl, I noticed that when I played a 50's pop record made here in europe (probably with german studio amplifiers) the voice seemed to belong to someone in the room (this is not a 'clean' recording) I checked this at another person's house with his solid state amp and comparisons between cd's and original pressings made before the 80's and the results were the same -- the music seemed played by living musicians. the FEEL of the music cuts through. In digital the feel is lost in part. Any accomplished musician about the importance of timing and touch, or at least any great INTERPRETER will know. A great sounding voice will not move as many people or sell more records than a voice with GREAT timing and feel. the ear is most sensitive to sharp transients and wave-FORM (as opposed to frequency response and thd etc.) much more than the industry and consumers would care to admit, for ignorance's sake or for convenience's sake. In short I believe that the transistor - opamp - digital revolution has caused the time-resolution of recordings to go downhill. So big analog tape decks with simple tube amps made with high quality transformers and components (not like a lot of 50's 60's electronics--whick were just plain cheap) are the way to go, and vinyl is the best way of getting at least the essence of the music into the home (I still have to hear sacd though) Records cut before the late '60s were cut with tube amplifiers driving the cutting head. by the 80's the cutting machines were complicated and I have seen one Neumann machine with a digital delay in line with the signal used as a pre-delay to determine groove-to-groove distance while cutting the side. Far from analog. It also passed through orban parametric eq's (cheap opamps) and god knows what. Anyone have similar feelings about this? |
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