Recording Curve for early Columbia mono Lps

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Lei-Fi
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Joined: Mon Feb 13, 2017 10:18 am

Recording Curve for early Columbia mono Lps

Post: # 46156Unread post Lei-Fi
Mon Feb 20, 2017 12:09 pm

Honorable and Secret members of The Society,

This forum was chosen because you give competent and sound answers even to strange Newbie-questions and because there is no special forum for aliens.

I’m researching the recording curve of Columbia’s microgroove Lp for „Playback equalization for 78rpm shellacs and early LPs“ http://wiki.audacityteam.org/wiki/78rpm_playback_curves which is a Wiki page of Audacity, the free audio recording and editing software.

Do you know which recording equipment (cutter head, recording filter, recording amplifier) Columbia Records might have used in those early years from 1948 to 1954?
Is there any information on the frequency response of this equipment available?

I believe they won’t have used RCA (their big rival) and they can’t have used Westrex (who re-started their cutter head business only in 1956). According to sources all the recordings in the mentioned time period were mastered in New York. Thank you for your help!
Respectfully
Lei-Fi

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