From 100673.3375@compuserve.com Wed Mar 20 16:03:47 1996 20 Mar 96 19:03:37 +0500 20 Mar 96 10:41:44 +0500 id KAA03174; Wed, 20 Mar 1996 10:00:18 -0500 Date: 20 Mar 96 09:57:17 EST From: Joe Farler <100673.3375@compuserve.com> Subject: Multimoog tuning TO: Analogue, INTERNET:analogue@hyperreal.com Re: Multimoog tuning Here's the tuning procedure for the Multimoog: Start with Osc. B ( ie set A/B Mix to B only ) 1: Osc Range. Set osc to drone and octave to 2'. Set fine tune on rear panel to a vertical position. and compare the Multimoog pitch to a reference tone of F above high C ( or 700 Hz on a test oscillator ). Turn the Osc Range pot with a screwdriver so that the two sounds are in unison ( ie no beating ) 2: Osc Scale. Set Osc to "Norm" and octave to 8'. Now press and HOLD the low F on the keyboard. Adjust the fine tune control so that the Multimoog sounds a perfect 2 octave interval below the reference. Now press and HOLD the high F on the keyboard. Turn the OSC B SCALE trimpot so that it is in perfect unison with the reference tone. 3: Osc High Freq Compensation. Set Osc to "Norm" and Octave to 2'. Press and HOLD the Low F and adjust the Fine Tune for zero beats with the reference ( F5 or 700 Hz ). Now press and HOLD the high F and adjust the OSC B HI trimpot for zero beats. As Scale and Hi interact slightly you should go back and repeat the Scale and Hi adjustments. 4: Osc Octave Step: Set Octave to 2' and Osc to "drone". Zero beat to reference tone F5 using the Fine Tune control. Then set the Octave to 16' and adjust Osc B OCT trimpot for zero beats. Recheck at 2' position. Now you've got Osc B tuned and scaled you can use it to set up Osc A. Set A/B mix to Center and set Interval to Center. 5: Osc A Scale: Set Octave to 8'. Depress F4 and adjust Osc A RANGE Trim for zero beats. Now press F1 and adjust Osc A SCALE Trim for zero beats. Repeat if necessary. 6: Osc B Hi End Comp: Set Octave to 2'. Press F1 and adjust OSC A RANGE Trim for zero beat. Press F4 and adjust Osc A HI Trim for zero beats. Repeat if necessary. That should do it Joe Farler