Doepfer A-115 Audio Divider User Manual
System a - 100, A-115, Introduction

doepfer
System A - 100
DIVIDER
A-115
1
1. Introduction
Module A-115 (DIVIDER) is a four-way frequency
divider.
The frequency of a signal at the input is halved (half
frequency = first sub-octave), quartered (1/4 frequency
= second sub-octave), and so on.
In this way, the DIVIDER produces four sub-octaves
(F/2 down to F/16).
At the output, the A-115 produces a summed mix of
the original and the four sub-octaves. There are at-
tenuators to control the amount (ie. Amplitude) of the
original signal and each of the sub-octaves.
Bear in mind that the sub-octaves output by the A-115
are all true square waves. If you put, eg., a sawtooth
into the Divider, it changes it into a square wave before
the frequency division takes place (using the Schmitt-
Trigger system, if you’re interested). At the output,
therefore, there are always four square waves and the
original signal available.
Audio In
F / 2
Audio
Out
F / 8
A-115
DIV IDER
F / 4
F / 16
Orig.
- DIY Synth do-it-yourself analog synthesizer (24 pages)
- MKE Universal Midi Keyboard Electronics Kit (17 pages)
- CTM64 Contact to Midi Interface (main board) (20 pages)
- CTM64 Relay Board (8 pages)
- MTC64 Midi to Gate Interface (main board) (16 pages)
- MTC64 Relay Board (8 pages)
- MTC64 Output Board (transistor driver board) (4 pages)
- MTC64 Power Board (8 pages)
- Pocket Electronic (32 pages)
- Dial Electronic (12 pages)
- Wheel Electronic (16 pages)
- USB64 Universal Midi and USB Controller Electronics Kit (20 pages)
- MBP25 Midi Bass Pedal Electronics Kit (16 pages)
- MTV16 Midi-to-Voltage Interface with 16 Analog Voltage Outputs (8 pages)
- A-100 (8 pages)
- A-100AD5 +5V low cost adapter (46 pages)
- A-100(~ 40 MB) (744 pages)
- A-100CGK CV/Gate keyboard (12 pages)
- A-101-1 Vactrol Steiner Filter (6 pages)
- A-101-2 Vactrol Lowpass Gate (6 pages)
- A-101-3 Vactrol Modular Phase Filter (10 pages)
- A-101-9 Universal Vactrol Module (14 pages)
- A-102 Diode Low Pass (6 pages)
- A-104 four-fold Trautonium Formant Filter (6 pages)
- A-105 24dB SSM Low Pass (8 pages)
- A-106-1 Xtreme Lowpass/Highpass Filter (12 pages)
- A-107 Multitype Morphing Filter (18 pages)
- A-108 6/12/24/48 Formant Filter (10 pages)
- A-109 Voltage Controlled Audio Signal Processor (10 pages)
- A-110 Standard VCO (12 pages)
- A-111-1 High End VCO (14 pages)
- A-111-5 Synthesizer Voice (22 pages)
- A-112 Sampler/Wavetable Oscillator (24 pages)
- A-113 Subharmonic Oscillator (14 pages)
- A-114 Dual Ringmodulator (6 pages)
- A-116 VC Waveform Processor (6 pages)
- A-117 Digital Noise / 808 Source (8 pages)
- A-118 Noise/Random (6 pages)
- A-119 External Input/Envelope Follower (8 pages)
- A-120 24dB Low Pass 1 (8 pages)
- A-121 12dB Multimode VCF (10 pages)
- A-123 24dB High Pass (no longer available) (8 pages)
- A-124 Wasp Filter (8 pages)
- A-125 VC Phaser (8 pages)