What about bringing the two channels together for mono? No doubt it was recorded in mono...
<L>
Lou Judson • Intuitive Audio 415-883-2689
On May 14, 2009, at 9:38 AM, Malcolm Rockwell wrote:
Odd that this phasing observation should arise now.
I have been transferring some mono 1930s ARC test pressings in stereo and noticed that the two signals were seemingly out of phase. I initially thought it might be an incorrectly wired cart, but that turned out not to be the case. Next I looked at the record groove - normal. Then I looked at the signals on the computer again. The run-in to the musical content IS out of phase (that's where all the rumble shows up), but the musical signal itself is in phase!
Shelving at around 80 Hz and notching at both 60 and 120 Hz should do the trick without adversely affecting the program content. I'm going to try that.
Mal
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