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 Tuning a Fatman with guitar pedal tuner 
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Joined: Tue Dec 02, 2014 11:37 pm
Posts: 1
Post Tuning a Fatman with guitar pedal tuner
I've tried using a Korg Pitchblack guitar tuner with my Fatman to check the tuning but it doesn't work. It jumps around and doesn't seem to track the pitch well at all. Is there some reason won't work?


Mon Dec 15, 2014 12:46 am
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Joined: Wed Jan 01, 2014 1:36 pm
Posts: 61
Location: Toronto
Post Re: Tuning a Fatman with guitar pedal tuner
the fatman has a much higher output level than a guitar. try setting the output level to a low level.

also, make sure the vco's are tuned together even though you will only be using one vco for tuning because the 2nd vco still influences the output somewhat.

Billb


Mon Dec 15, 2014 9:54 am
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Joined: Sun Nov 09, 2008 2:49 pm
Posts: 726
Post Re: Tuning a Fatman with guitar pedal tuner
It might be the tuner needs FatMan's panel pitch control set at other than the initial setting as described below. Also, note the other VCO is best set so it is not slowly beating or locked, minimizing its influence.

Before calibrating. Set the #1 offset to minimum (to be very different from VCO2 because when they are very close, one might be pulling towards the other - like when they are set for low beat frequencies and they phase lock).

Press the lowest C and adjust the Pitch control to so the sound is in tune with the MIDI controller's if you need the reference. (I usually just set the pitch to about a 9:00 setting without any reference and it's fairly easy to pick out the octaves on the subsequent adjustments).

Press the highest C and adjust the DAC Tune for a pitch four octaves higher.

Press the next C down and adjust Oct 3 for a pitch three octaves higher.
Press the next C down and adjust Oct 2 for a pitch two octaves higher.
Press the next C down and adjust Oct 1 for a pitch one octave higher.

Now, when you press the lowest C, it's pitch will be different and the Pitch control should be adjusted to bring it back to the original pitch.
Repeat the process beginning with the adjustment of the DAC Tune and after two or three iterations, no further adjustment will be necessary.
Tuning may need to be optimized by repeatedly playing a C, C#, D, and D# one after the other listening for the best relationship while tweaking the DAC Tune one way or the other slightly

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Scott Lee
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Mon Dec 15, 2014 11:08 am
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