Table of Contents

Modular Synthesizers

Suitable components are gathered at the Components subpage.

Module ideas on Module ideas subpage.

Specifications

Electrical

Backplane pinout

16-pin 10-pin Function
1,2 1,2 -12 V
3,4 3,4 GND
5,6 5,6 GND
7,8 7,8 GND
9,10 9,10 +12 V
11,12 +5 V
13,14 CV
15,16 GATE

Input characteristics

Property Common value
Impedace > 10k
Voltage range -10 V to +10 V

Output characteristics

Property Common value Doepfer A-100
Impedace > 1k ?
Audio voltage -5 V to +5 V
Control voltage -10 V to +10 V -2.5 V to +2.5 V
Trigger voltage 0 or +5 V

Measured on my system

Tip seems to be signal, ring seems to be 0 V.

Property Value Comment
Impedace ? Not measured
Audio voltage -5 V to +5 V Measured on Doepfer A-111-6
Control voltage 0 V to +10 V Measured on arturia output
Trigger voltage 0 or +5 V Measured on arturia output

Different systems

Property Moog standard Buchla
Volts per octave 1 V 1.2 V

Dimensions

Many dimensions are derived from Doepfers DIY guides.

Dimension Nominal (mm) Actual (mm) Comment
3 U 133.40 128.50 Height
1 HP 5.08 5.00
2 HP 10.16 9.80
4 HP 20.32 20.00
6 HP 30.48 30.00
8 HP 40.64 40.30
10 HP 50.80 50.50
12 HP 60.96 60.60
14 HP 71.12 70.80
20 HP 101.60 101.30

Other dimensions (mostly from https://sdiy.info/wiki/Eurorack_panel_components)

Nominal (mm) Measure
2 Thickness of panel, measured
122.5 Mounting hole vertical spacing
N x 5.08 Mounting hole horizontal spacing
3 Mounting hole vertical distance from panel top/bottom edge
7.45 Mounting hole horizontal distance from panel left edge
3.2 Mounting hole size
M3 Mounting hole screw
112.2 Max clearance between rails for smallest (Schroff) system

Recommended / Wishlist

Modules

Accessories

Hardware

Resources