Analogue systems

In case anyone is interested, I went ahead and tried this modification.  It
takes a good number of turns on the trimmer, but you can detune the whole
thing one octave up.  It didn't affect the tracking.  I was afraid the range
of the wide setting would be offset, but apparently not-- you will still get
down to 0.3 Hz by turning the dial.  The -2OCT trimmer had to be readjusted
a bit.

I like this adjustment.  Now switching between STD and -2OCT is like a
treble/bass or female/male switch.  Overall, It's more centered around
standard pitches.  With a 49 note keyboard, it puts 8 octaves within reach
of the switch and dial (not counting the WIDE setting), with middle C right
in the middle.


On Thu, Jul 17, 2008 at 10:49 AM, Monroe Eskew <monroe.eskew@gmail.com>
wrote:

> Hey all,
>
> I haven't been around analog synths for very long, so maybe I just don't
> know the traditions...
>
> But it seems like the rs95 oscillator is unduly biased towards the low
> notes.  When the frequency is set to the middle zero mark, and one switches
> it into "-2 oct" mode, the tone is in the subsonic range, about the speed of
> an open roll on a snare drum.  I appreciate that the oscillator can go into
> LFO mode, but those low frequencies are accessible on the "wide" setting, so
> you'd think that "-2 oct" would still be for the tonal range.
>
> Under the "standard" setting, using a 4 octave keyboard gets you middle C
> at the middle of the keyboard.  Sounds appropriate, but if the default of
> the oscillator were tuned one octave higher, then the high range on a 4
> octave keyboard would still be within the normal range for a piano or
> orchestra.  Switching it to -2oct would then put the low C near the bottom
> of the audible range.  Overall, we would get almost all of the standard
> 88-key piano tones on a 4 octave CV keyboard with the flip of that switch.
>
> Would it be ill-advised to detune the rs95 to add one octave to its
> defaults, using the internal trimmer?   Would that mess up the "wide"
> setting?
>
> Thanks,
> Monroe
>


[Non-text portions of this message have been removed]