Doepfer

Hi List,
I may be purchasing an old Korg SQ-10 sequencer which sends its 
signal out in Hz and not 1v/Octave. Does anyone know of a patch so I 
can convert this and seq my A-100 from the SQ-10?

I can do it the opposite way, seq my MS10 from my A-100. I have a 
trigger invertor so it's only the Oscillators I need to sort out.

Thanks
>JOhn.

I haven't tried this, but I think you should be able to patch the 
Hz/V signal to the CV input of an A121 exponential VCA, with a fixed 
voltage, such as from the A176 CV source, to the A121's signal input 
jack. Adjust the attenuator knobs until you get the Volt/Octave 
tracking correctly.

This won't work with the older A121's, you'd need one of the newer 
ones that can handle DC.

Someone who't actually done this should probably chime in on this, 
though.

Joe

--- In Doepfer_a100@y..., "jmaddocks1975" <jmaddocks1975@y...> wrote:

> Hi List,
> I may be purchasing an old Korg SQ-10 sequencer which sends its 
> signal out in Hz and not 1v/Octave. Does anyone know of a patch so I 
> can convert this and seq my A-100 from the SQ-10?
> 
> I can do it the opposite way, seq my MS10 from my A-100. I have a 
> trigger invertor so it's only the Oscillators I need to sort out.
> 
> Thanks
> >JOhn.

--- In Doepfer_a100@y..., "jmaddocks1975" <jmaddocks1975@y...> wrote:
> Hi List,
> I may be purchasing an old Korg SQ-10 sequencer which sends its 
> signal out in Hz and not 1v/Octave. Does anyone know of a patch so I 
> can convert this and seq my A-100 from the SQ-10?
> 
> I can do it the opposite way, seq my MS10 from my A-100. I have a 
> trigger invertor so it's only the Oscillators I need to sort out.
> 
> Thanks
> >JOhn.

I'm not sure what the problem is unless the Korg quantizes the voltage 
output. That is, if you're just sequencing pitches, shouldn't you be 
able to just turn the knobs till it's in tune whether it's exponential 
OR linear? I realize the Korgs use  shorting triggers instead of gates 
(at least my MS-20 does) - is that the problem?

-andrew bunny

Yeah, I thought about this the night I posted the question. Each 
note is independent so just turn the knob until its correct. I've 
bought the Sq-10 just waiting delivery and last week received 
delivery of my 1st analogue solutions modular.
The integrator modules are defintely reacting to voltages different 
to the doepfer modular, they're ok but I'm not amazed.



--- In Doepfer_a100@y..., "andrewdalio" <bunnyman@s...> wrote:
> --- In Doepfer_a100@y..., "jmaddocks1975" <jmaddocks1975@y...> 
wrote:
> > Hi List,
> > I may be purchasing an old Korg SQ-10 sequencer which sends its 
> > signal out in Hz and not 1v/Octave. Does anyone know of a patch 
so I 
> > can convert this and seq my A-100 from the SQ-10?
> > 
> > I can do it the opposite way, seq my MS10 from my A-100. I have 
a 
> > trigger invertor so it's only the Oscillators I need to sort out.
> > 
> > Thanks
> > >JOhn.
> 
> I'm not sure what the problem is unless the Korg quantizes the 
voltage 
> output. That is, if you're just sequencing pitches, shouldn't you 
be 
> able to just turn the knobs till it's in tune whether it's 
exponential 
> OR linear? I realize the Korgs use  shorting triggers instead of 
gates 

> (at least my MS-20 does) - is that the problem?
> 
> -andrew bunny

The only possible difficulty, as I see it, is that the Hz/V 
sequencer will be sending a pitch CV to the A100 that increases 
exponentially as you adjust the pitch control upwards. (Do I have that 
right, and am I thinking about it backwards?) The A100 is expecting a 
linear voltage, so in the upper registers, the granularity of the 
pitch control will become progressively coarser - you might not have 
enough fine control to obtain the correct note without 
overshooting.

Like I said, though, I've never done this, and I probably don't know 
what I'm talking about :-)

It's also possible that my A121 exponential VCA suggestion might be 
exactly backwards - it might be how you convert from volt/octave to 
Hz/volt, rather than vice versa. It's too much thinking for me to do 
on a weekend.
 
Joe

--- In Doepfer_a100@y..., "jmaddocks1975" <jmaddocks1975@y...> wrote:
> Yeah, I thought about this the night I posted the question. Each 
> note is independent so just turn the knob until its correct. I've 
> bought the Sq-10 just waiting delivery and last week received 
> delivery of my 1st analogue solutions modular.
> The integrator modules are defintely reacting to voltages different 
> to the doepfer modular, they're ok but I'm not amazed.
> 
> 
> 
> --- In Doepfer_a100@y..., "andrewdalio" <bunnyman@s...> wrote:
> > --- In Doepfer_a100@y..., "jmaddocks1975" <jmaddocks1975@y...> 
> wrote:
> > > Hi List,
> > > I may be purchasing an old Korg SQ-10 sequencer which sends its 
> > > signal out in Hz and not 1v/Octave. Does anyone know of a patch 
> so I 
> > > can convert this and seq my A-100 from the SQ-10?
> > > 
> > > I can do it the opposite way, seq my MS10 from my A-100. I have 
> a 
> > > trigger invertor so it's only the Oscillators I need to sort 
out.

> > > 
> > > Thanks
> > > >JOhn.
> > 
> > I'm not sure what the problem is unless the Korg quantizes the 
> voltage 
> > output. That is, if you're just sequencing pitches, shouldn't you 
> be 
> > able to just turn the knobs till it's in tune whether it's 
> exponential 
> > OR linear? I realize the Korgs use  shorting triggers instead of 
> gates 
> > (at least my MS-20 does) - is that the problem?
> > 
> > -andrew bunny

hello list,
why don't you do something else?
sync the sq10 with the a100 and sequence the ms10 from
the sq10 that's what i do!i have the sq10 and
ms10,ms20.all you need to do is pass the clock pulse
from the a100 thru the a165 trigger modifier and send
it to the ext.control step input of the sq10.i,also,
sequence the ms10,ms20 from the a100 sequencers but i
do not use them for pitch control,but for anything
else...
bakis.



--- jmaddocks1975 <jmaddocks1975@yahoo.co.uk> wrote:
> Hi List,
> I may be purchasing an old Korg SQ-10 sequencer
> which sends its 
> signal out in Hz and not 1v/Octave. Does anyone know
> of a patch so I 
> can convert this and seq my A-100 from the SQ-10?
> 
> I can do it the opposite way, seq my MS10 from my
> A-100. I have a 
> trigger invertor so it's only the Oscillators I need
> to sort out.
> 
> Thanks
> >JOhn.
> 
> 


=====
synthfreak(parallel worlds)
athens-greece
[Doepfer_a100] group owner-moderator

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