Doepfer — A-160-2

Manual PDF

Doepfer A-160-2 Clock/Trigger Divider II

Cheat Sheet

Summary

The A-160-2 is an advanced clock/trigger/gate divider. It takes a clock input and produces seven simultaneous divided outputs (with selectable division patterns and output types). It’s useful for rhythm generation, clocking sequencers, and related timing duties in a Eurorack system.

Inputs & Outputs

1. Clock In

Use: Receives external clock, gate, or trigger.
Voltage Range: Digital signal (logic) e.g. 0V = low, +10V = high.
Sources: LFO, MIDI sync, MIDI-CV gate, etc.
Note: Clock edge (rising or falling) can be set via PCB jumper.

2. Reset In

Use: Resets output state according to mode.
Voltage Range: High = >2.5V, Low = <1V.
Configurable by Jumpers:
Level vs. edge trigger
Respond to positive or negative edge/level

3. Seven Clock Divided Outputs (per mode)

Voltage Range: 0V (low), ≈ +10V (high)
Output Polarity: Select non-inverted/inverted via PCB jumper

Output Division Types (selected via 3-way switch):

Powers of 2: /2, /4, /8, /16, /32, /64, /128
Prime Numbers: /2, /3, /5, /7, /11, /13, /17
Integer: /2, /3, /4, /5, /6, /7, /8

Front Panel Controls

Division Set Selector (3-way toggle):
Selects between:Powers of Two, Prime Numbers, Integer Sequences
Output Mode Selector (3-way toggle):
Gate: Each output stays "high" for half its division cycle.
Trig: Each output is AND-wired with the incoming clock (follow clock pulsewidth).
"Cst" (Custom): Not implemented in current firmware.

No knobs, buttons, or sliders are present on the panel.

Internal Jumpers (on PCB, for advanced configuration)

Clock Edge: Rising or falling edge triggers output state change.
Reset Behavior: Level vs edge, positive vs negative.
Output Polarity: Outputs normal or inverted.

For jumper locations/functions, see: A160_2_jumpers.pdf (Doepfer)

Physical Specs

Width: 4 HP (20mm)
Depth: 35mm
Current: +12V: 50mA, -12V: 0mA

Key Usage Tips

Connect your master clock source to "Clock In".
Use "Reset In" for synchronized resets (e.g. when syncing rhythm to bar start).
Use the top toggle to select which division family best fits your patch.
Use the mode toggle to pick Gate or Trigger type outputs.
All outputs are available simultaneously for creative patching.
Unused center "Cst" output mode may offer new features with future firmware.