Oberheim ps 1 phaser
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Page 1
Oberheim 133-1 Phase Shifter 9K selected
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All ICs are 1458 dual op amp. All bipolars are 2N3638A.
. 3| k Adjustment pro ceduxe:
gfwfrum' 1. PET Bias: With Osc.Ampl. trimmer fully counterclockwise, adjust FET Bias so that
Mime audibile phasing sound is in the middle of its range.
5 "c m 2. Osc. Amp]; Adjust for desired depth of phasing sound.
3. Output Offset: adjust for minimum "click" when OfffSIOW Phase switch is operated.