ANTUMBRA MULT Instruction Manual

ANTUMBRA
MULT
BUILDING INSTRUCTIONS
PCB V1.0

01. BUILD NOTES
Before you start building look through the build manual
so that you’ll be familiar with the building process and
you won’t run into any surprises! :)
Good luck!

02. OPTIONS
For this build there are some options that you can choose
from, the two main options are:
01: Passive multiple
Module won’t draw power, 4x4 multiple.
02: Buffered multiple
Multiples are buffered, ensuring that outputs are
exact copies of the inputs.
Additional (optional) options:
03: Linking parts
04: Normaling input to ground
05: Jack lights

03. OPTION 1: PASSIVE MULT
00. Orient the PCB as seen on the left.
01. Connect the solder jumpers.
02. Go to the last part in the build documentation for the
other side.
00 01

TL074 TL074 TL074 TL074
501501501501
501501
501501501
501
501
501
TL074 TL074 TL074 TL074
04. OPTION 2: BUFFERED MULT
00. Orient the PCB as seen on the left.
01. Solder the two 1n5819 diodes.
Orientation matters!
02. Solder the two 10uF capacitors.
Orientation matters! Match the PCB drawing with the
components’ shape.
03. Solder the four TL074 op amps.
Orientation matters! They should be oriented up.
04. Solder the 12x 51R resistors
00 01 02 0403

TL074 TL074 TL074 TL074
501501501501
501501
501501501
501
501
501
106 106 106 106
TL074 TL074 TL074 TL074
501501501501
501501
501501501
501
501
501
106 106 106 106
TL074 TL074 TL074 TL074
501501501501
501501
501501501
501
501
501
106 106 106 106
04. OPTION 2: BUFFERED MULT
05. Solder the four 10M resistors.
06. Solder the eight 100nF capacitors
07. Solder the 2x5 pin header.
08. Go to the last part for the other side.
05 06 07

05. OPTION 3: LINKING PARTS
This option enables you to link the four parts (or specific
parts) together. Meaning that the first jack of each part
will be normalized to the previous part, so if you don’t
connect anything to the first jack, the 3 outputs of that
part will output the input of the previous part. This al-
lows you to split a single signal to 12 outputs maximum.
This is an available addition to both the passive and the
buffered options.
00. Orient the PCB as seen on the left.
01. Bridge the solder jumpers
Part 1 -> Part 2
Part 2 -> Part 3
Part 3 -> Part 4
00 01

06. OPTION 4: NORMALIZE TO GND
This option enables you to normalize inputs to ground, so
that outputs are not floating when an input is not con-
nected.
Don’t use this option if you chose to link parts! Or then
just do this for the first part of each linked parts.
00. Orient the PCB as seen on the left.
01. Bridge the solder jumpers
Part 1
Part 2
Part 3
Part 4
00 01

161161161161 161161161161 161161161161 161161161161
07. OPTION 5: JACK LIGHTS
If you want to add illumination to the jacks, add the fol-
lowing componets (add components from the buffered
mult option: 01, 02, 07). This can be done even if you want
a passive multiple, though like this it’ll draw a consider-
able amount of current from the +12 rail.
00. Orient the PCB as seen on the left.
01. Solder the four 160R resistors.
02. Solder the 16x SMD LEDs
Orientation matters! The markings should face the
Ű lines on the PCB.
03. Solder 1x2 pin header and add jumper.
04. Bridge the four solder jumpers.
00 01 02 0403

08. FRONT
Regardless of what options you chose, you have to solder
the 16 jacks on the front.
The panel has two sides, one for the passive and one for
the buffered option.
Place the jacks, place the panel, add the nuts, then solder!
You are now finished with building the module, congratu-
lations for your new awesome MULT!
01 02

MULT is designed by David Szebenyi under Antumbra.
www.antumbra.eu
Manual by David Szebenyi (www.aman.hu)
2018 • All rights reserved!