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Re: [motm] bipolar output for MOTM-320 saw?

2007-06-20 by Richard Brewster

It's a feature, not a bug.  To get a full sawtooth from the SAW output, 
the SHAPE pot has to be at 0 or 10.  Either of these positions results 
in a 10V p-p signal.  At 5 on the SHAPE dial you get a 0 to +5V triangle 
from the SAW out.  That is useful.  No other MOTM LFO produces a 0 to 
+5V triangle wave.  In between on the SHAPE pot gives you in-between shapes.

I have found that I use the SINE, TRI, and PULSE outputs of LFO's much 
more than the SAW outputs, anyway.

I suggest that if you want a constant 10V p-p SAW, you can use a 
MOTM-300 or 310 as an LFO.

Richard Brewster
http://www.pugix.com

Scott Juskiw wrote:
> The saw output on my 320s are all 10 Vpp (when outputting a saw or 
> ramp wave). When the SHAPE control is in the 12 o'clock position it 
> outputs a triangle wave that is 0 to +5V.
>
>   
>> As most of you have probably noticed, three of the outputs of the
>> MOTM-320 are 10Vpp, and the saw output is 5Vpp going from just above
>> ground to 5V.  While it does make the saw output more useful when
>> driving pedal inputs and other devices that don't like negative
>> voltages (as you can also change it to a more useful triangular
>> shape), it does make it is inconsistent with the other MOTM-320
>> outputs when used within the modular.  This makes its effect when
>> switching from another output not only a change the shape of the
>> modulation, but also half the range.
>>
>> I'm not sure why it was designed that way, but is there an easy way
>> to change the saw output to a bipolar 10Vpp output?  It doesn't look
>> like there is, but I could be missing something.  So I thought I
>> would ask before I built a daughterboard.  Any ideas??
>>
>>     
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