Doepfer A-122 24dB Low Pass 2 User Manual
Browse online or download User Manual for Audio Doepfer A-122 24dB Low Pass 2. Doepfer A-122 24dB Low Pass 2 User Manual
- Page / 8
- Table of contents
- BOOKMARKS
Rated. / 5. Based on customer reviews
doepfer
System A - 100 A-105 / A-122
1
1. Introduction
The modules A-105 and A-122 are voltage-
controlled low-pass filters, which filter out the higher
parts of the sound spectrum, and lets lower frequen-
cies pass through.
The
cut-off frequency
determines the point at which
filtering takes effect. You can control this manually, or
by voltage control (
filter modulation
, for instance by
an LFO). Two CV inputs are available. The cut-off
slope is
-24 dB/octave
.
Voltage controlled resonance: for both A-105 and
A-122, resonance can be controlled not just manually,
but by voltages as well, right up to self-oscillation. In
this case, the filter behaves like a sine wave oscillator.
The A-105 is based on the special circuit SSM2044,
that was used in several devices of the companies
Korg (Polysix, Mono-Poly), Sequential Circuits
(Prophets, Pro-One), PPG, Fairlight, Emu and Kawai.
The circuitry of the A-122 uses a chip of Curtis Elec-
tromusic (CEM), and is very similar to the classic
Oberheim filter sound. Because of the different cir-
cuits the A-105 and A-122 have considerably different
sounds and even sound different compared to the
other filters (e.g. A-120 Moog low pass, A-102 Diode
Low Pass or A-103 18dB low pass, A-124 Wasp filter).
As the functions and controls are the same for both
modules they are a combined in one manual.
FCV 1
Resonance
FCV 2
QCV
Audio
In
Level
Audio
Out
QCV
Frequency
A-122
VCF 3
FCV 2
Summary of Contents
Page 1 - 1. Introduction
doepferSystem A - 100 A-105 / A-12211. IntroductionThe modules A-105 and A-122 are voltage-controlled low-pass filters, which filter out the highe
Page 2 - A-122
A-105 / A-122 System A - 100doepfer22. VCF 3 - OverviewControls:1 Lev. : Attenuator for audio input !2 Frq. : Cut-off frequency control3 FCV : At
Page 3 - 3. Controls
doepferSystem A - 100 A-105 / A-12233. Controls1 Lev.Use this attenuator to control the amount of signalentering the filter input $.H If the filter
Page 4 - " FCV 1
A-105 / A-122 System A - 100doepfer4At close to maximum resonance, the filter starts toself-oscillate, and behaves like a sine wave oscilla-tor. Th
Page 5 - 5. User examples
doepferSystem A - 100 A-105 / A-1225$ QCVThis socket is the voltage control input for the filter’sresonance.If you patch a modulation source (eg LFO,
Page 6
A-105 / A-122 System A - 100doepfer6A-121 multi-mode filter’s 12 dB) with voltage control-led resonance.To create a bandpass filter, put both modules
Page 7
doepferSystem A - 100 A-105 / A-1227Further examples can be found in the manual for theA-123 high pass filter.
Page 8 - Audio Out
A-105 / A-122 System A - 100doepfer86. Patch-SheetThe following diagrams of the module can helpyou recall your own Patches. They’re designed sothat
Related products and manuals for Audio Doepfer A-122 24dB Low Pass 2
Audio Doepfer A-110 Standard VCO User Manual
(12 pages)
(12 pages)
© 2020, manymanuals.com. All rights reserved. | 0.649 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comments to this Manuals