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In Reply to: RE: Since it's not a true mono record, nothing posted by vinyl1 on September 19, 2014 at 19:20:44
vinyl1, from my reading all mono (current) reissues are cut with stereo cutter heads since mono heads are no longer available. But I thought that related to the profile of the head? Are they not fed a mono signal?
Also, how do you get more than one channel from a mono signal?
I've had some confusion about mono recordings before but now you've added to that. :^(
"You can’t know what the “best” is unless you have heard everything, and keep in mind that given individual tastes, there really isn’t any such thing." HP
Follow Ups:
...Ron Bushy starts wailing away in his drum solo, the drums seem to move around; a blind friend (super sensitive hearing) noticed the same thing.
Later Gator,
Dave
...cuts a U-shaped groove that goes back and forth, but not up and down. There is only one signal encoded. A stereo cutter cuts a V-shaped groove in which there are two channels, one on each side of the groove. Both vertical and horizontal movement of the stylus are significant.
vinyl1, I am not familiar with U-shaped grooves in LPs. Here is information from "Audio Cyclopedia" by Howard Tremaine:
13.30 . . . In the normal recording of records the groove walls form an angle of 90 degrees, which is particularly important in recording stereophonic records using the 45/45-degree system. For records cut before the advent of stereo, lateral records were cut using an 87-degree included angle stylus, on the assumption that after processing the groove grew to 90 degrees.
So yes, mono LPs were cut with lateral motion (not back and forth). Stereo LPs are made possible by the 45/45 system which introduced vertical motion at the same time. But that does not sound like a U-shaped groove.
Now the question is: are modern mono reissues cut with a one channel signal and lateral motion only, or are two identical channel signals cut with both lateral and vertical motion?
Note that either could be done with stereo cutter heads since apparently mono heads are no longer available.
"You can’t know what the “best” is unless you have heard everything, and keep in mind that given individual tastes, there really isn’t any such thing." HP
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