PLAN B analog blog

hello peter,
since i bought my two model 15 vco's (which sound
great, btw) i noticed that a kind of cross modulation
appears (or maybe linear fm mod?) coming from another
circular changing cv source that is mounted in the
same rack.
at first, i had my model 15's near the dual cyclotron
and the cyclotron lfo's seemed to affect, very
slightly, the pitch of the two model 15 vco's. the
effect was very very slight and did not cause any real
problem.
now i have my two model 15's mounted next to my ZO and
the ZO seems again to affect the two model 15's. it
sounds like the model 15's are cross-moded by the ZO
with a low modulation index. the effect is not
noticable in low and mid frequency pitches, but only
in higher pitches, that some extra harmonics are
introduced and added to the model 15 raw waveforms.
ok, not a real problem, but i was wondering what
causes this cross-mod of the model 15's with the
nearby module.
the rack is ok, as i had changed racks and the PSU
can, for sure, handle the total current draw as it is
a PSU2 and i have estimated the module's current draw.
so, any thoughts?
thank you,
best regards,
Bakis.




Bakis Sirros - Parallel Worlds
[Doepfer_a100] group owner
http://www.parallel-worlds-music.com
http://www.myspace.com/parallelworldsmusic
http://www.shimarecords.co.uk
http://www.rubber.gr
Athens-Greece

__________________________________________________
Do You Yahoo!?
Tired of spam?  Yahoo! Mail has the best spam protection around 
http://mail.yahoo.com