Yahoo Groups archive

Doepfer

Index last updated: 2026-04-29 00:15 UTC

Thread

basic problem with the A110

basic problem with the A110

2010-01-07 by Kasper T Toeplitz

hi

I am new on this group, my first post.
I have a "basic system 2" (with midi) plus some other modules (in a 
second case) but my questions are about a VERY basic system - it is 
about the A110 VCA

1/ If I want to play just one straight note (whatever its shape) - no 
modulation, no nothing,no midi, no controllers, just a simple drone...
  I just take the output of A110 straight out (to a mixer->speaker)

All fine, except that the A110, for each octave only outputs pitches 
in between a (slightly high) A note up to a (slightly high) C#. No 
way to output a D D# E F F# G G#.......
normal??? I don't think so...  when it says about its range being of 
7 octaves or so, it should say  it is in HALF-octaves  - and when , 
about the "TUNE" control it is not "only about one octave" but less 
than half-octave

_____can you confirm or tell me what I am doing wrong


2/ok, if i plug a midi controller (keyboard) I can have all 12 notes 
of a scale. Nice. But then I can NOT tune the second VCO at an 
interval of a fifth (which is a very classic effect) Actually i can 
only tune the second VCO in a difference of +/- a small third (or 
rather as "big" second)

_____can you confirm or tell me what I am doing wrong



Ok, many thanks for any help, explaination or whatever

(it's not that I insist on having the "notes" or playing them "in 
tune". but a hole of more than a half-octave in all octaves is NOT a 
nice thing)

all the best

kasper

AW: [Doepfer_a100] basic problem with the A110

2010-01-07 by yahoo@doepfer.de

Indeed there is a discrepancy between the information on our website and the
user's manual:

The A-110 information on our website says:

"... tune knob by about +/-1 one semitone (can be modified for a wider
range)"

The A-110 manual says "+/-1/2 octave".

The reason is that in the beginning (when the manual was written) the A-110
were manufactured with +/- 1/2 octave tune range. Later we changed to +/-1
semitone because many customers asked for a finer control. In the service
manual you'll find the resistor R5. The value of this resistor defines the
range of the tune knob. It has to be reduced to about 240k or 220k for +/-
1/2 octave (or ~ 330k in parallel to the existing 1M).

Best wishes
Dieter Doepfer
Show quoted textHide quoted text
> hi
>
> I am new on this group, my first post.
> I have a "basic system 2" (with midi) plus some other modules (in a
> second case) but my questions are about a VERY basic system - it is
> about the A110 VCA
>
> 1/ If I want to play just one straight note (whatever its shape) - no
> modulation, no nothing,no midi, no controllers, just a simple drone...
>   I just take the output of A110 straight out (to a mixer->speaker)
>
> All fine, except that the A110, for each octave only outputs pitches
> in between a (slightly high) A note up to a (slightly high) C#. No
> way to output a D D# E F F# G G#.......
> normal??? I don't think so...  when it says about its range being of
> 7 octaves or so, it should say  it is in HALF-octaves  - and when ,
> about the "TUNE" control it is not "only about one octave" but less
> than half-octave
>
> _____can you confirm or tell me what I am doing wrong
>
>
> 2/ok, if i plug a midi controller (keyboard) I can have all 12 notes
> of a scale. Nice. But then I can NOT tune the second VCO at an
> interval of a fifth (which is a very classic effect) Actually i can
> only tune the second VCO in a difference of +/- a small third (or
> rather as "big" second)
>
> _____can you confirm or tell me what I am doing wrong
>
>
>
> Ok, many thanks for any help, explaination or whatever
>
> (it's not that I insist on having the "notes" or playing them "in
> tune". but a hole of more than a half-octave in all octaves is NOT a
> nice thing)
>
> all the best
>
> kasper
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>

Re: AW: [Doepfer_a100] basic problem with the A110

2010-01-07 by Kasper T Toeplitz

>


oh!!! you are fast!

and this explains that -

_apart from changing he resistor, if I want to have a larger ambitus 
control would the  A-176 allow me to have what I want (outputting a 
straight line, out of the A110, at any pitch) ?

_when using a midi input - how to tune the second oscillator (a 
second A110), say a fith apart from  the first A110?

many thanks

kasper
Show quoted textHide quoted text
>
>Indeed there is a discrepancy between the information on our website and the
>user's manual:
>
>The A-110 information on our website says:
>
>"... tune knob by about +/-1 one semitone (can be modified for a wider
>range)"
>
>The A-110 manual says "+/-1/2 octave".
>
>The reason is that in the beginning (when the manual was written) the A-110
>were manufactured with +/- 1/2 octave tune range. Later we changed to +/-1
>semitone because many customers asked for a finer control. In the service
>manual you'll find the resistor R5. The value of this resistor defines the
>range of the tune knob. It has to be reduced to about 240k or 220k for +/-
>1/2 octave (or ~ 330k in parallel to the existing 1M).
>
>Best wishes
>Dieter Doepfer

AW: AW: [Doepfer_a100] basic problem with the A110

2010-01-08 by yahoo@doepfer.de

> _apart from changing he resistor, if I want to have a larger ambitus 
> control would the  A-176 allow me to have what I want (outputting a 
> straight line, out of the A110, at any pitch) ?

Yes 

> _when using a midi input - how to tune the second oscillator (a 
> second A110), say a fith apart from  the first A110?

Changing the resistor R5 or using the second output of an A-176.

Best wishes
Dieter Doepfer

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.