Doepfer A-138 Handleiding

Doepfer Niet gecategoriseerd A-138

Lees hieronder de 📖 handleiding in het Nederlandse voor Doepfer A-138 (4 pagina's) in de categorie Niet gecategoriseerd. Deze handleiding was nuttig voor 37 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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doepfer System A - 100 MIXER A-138
1
1. Introduction
Module A-138 (MIXER) is a four channel mixer, which
can be used with either control voltages or audio si-
gnals.
Each of the four inputs has an attenuator, and there’s a
master attenuator, so that the mixer can be used at the
end of the audio chain - ie. it can be used to interface
directly with an external mixer, amplifier, etc..
The module can be supplied in two versions:
• A-138 a: potentiometers with linear response, so
especially suitable for control voltage mixing.
• A-138 b: potentiometers with logarithmic response,
so especially suitable for audio signal mixing.
From about middle of 2004 the module is equipped with
an additional offset function for input 1. An internal
jumper is used to decide if control input 1 works as a
positive or negative DC offset generator provided that
no plug is inserted into input 1.
Input 1
Output
A-138
MIXER
Input 2
Input 4
Input 3
In 1
In 2
In 3
In 4 Out
A-138 MIXER System A - 100 doepfer
2
2. MIXER - Overview Controls and markings:
1 lin. / exp.: indication of type of mixer:
A-138 a: linear potentiometers
A-138 b: logarithmic potentiometers
2 ! In 1: Attenuator for input
3 " In 2: Attenuator for input
4 § In 3: Attenuator for input
5 In 4: Attenuator for input $
6 Out: Output attenuator
In / Outputs:
! Input 1
" Input 2
§ Input 3
$ Input 4
% Output
A-138
MIXER
Input 2
Input 3
Output
Input 1
➁
➂
➃
➄
➅
Input 4
0 10
010
0 10
010
0 10
lin exp
➀
In 1
In 2
In 3
In 4
Out
doepfer System A - 100 MIXER A-138
3
3. Controls and markings
1 lin. / exp.
Check which little circle is filled in, to see which version,
linear or exponential (logarithmic), the VCA is.
2 In 1 ... 5 In 4
Attenuators 1 to 4 control the level for inputs ! to $.
6 Out
The output level of the mixer is controlled by attenua-
tor 5. Unlike on most A-100 modules, the output has an
attenuator, so that it can act as the end of the audio
chain, and interface directly with a mixing desk, ampli-
fier, etc.
From about middle of 2004 the module is equipped with
an additional offset function for input 1. The pin header
labelled JP4 (located behind input 1 on the pc board) is
used for this option. With no jumper on JP4 the offset
option is disabled. If a jumper is put to JP4 in the right
position (near the edge of the pc board) a positive offset
voltage (~ 0...+5V) is generated by control 1 provided
that no plug is inserted into socket 1. If a jumper is put to
JP4 in the left position (direction to the front panel) a
negative offset voltage (~ 0...-5V) is generated.
4. In / Outputs
! Input 1 ... $ Input 4
Sockets ! to $ are the mixer’s inputs. Patch in what
you want to mix via these sockets.
H You can use the mixer for either control volta-
ges or audio signals (see chapter 5, user
examples)
% OUT
The mixed signal is available at the output.

Product specificaties

Merk: Doepfer
Categorie: Niet gecategoriseerd
Model: A-138

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