INS Header
A three-pin header labeled
INS
on the back of the
Listen Four Quarters
allows you to
connect another module as an auxiliary stereo input. Whatever signal is fed into the header
will appear on the outputs without any attenuation. The
INS
header has pins for the left
channel (bottom pin), right channel (top pin), and ground (center pin). The input impedance is
47k.
A typical use would be to daisy-chain multiple
Listen
modules to create a mixer with eight or
more channels. To do this, the
OUTS
header on one module is connected to the
INS
header
on the other module. See the
Daisy-chaining
section for details.
OUTS Header
A three-pin header labeled
OUTS
on the back of the module allows you to send the main
output mix to another module with a compatible header. The pin order and pin dimensions of
this header are the same as the
INS
header (see previous section). The output impedance is
1k. It will not damage the circuitry if the pins are shorted to ground.
The
Main Level
knob controls the level on the
OUTS
header. The main outputs and
headphones outputs are unaffected by the use of the
OUTS
header.
Daisy-chaining
Multiple
Listen
modules can be connected to form
a large mixer. For example, connecting two
Listen
Four
modules creates an eight channel stereo
mixer: the four inputs of the first
Listen Four
are
added to the four inputs of the second
Listen Four
(see photo on the left).
You can daisy-chain as many modules as you
want. Connecting a
Listen Four Quarters
after
the two
Listen Fours
in the example above will
create a 12 channel mixer with 1/4” balanced
outputs, and two sub-mix outputs.
You can also connect a
WAV Recorder
module to
the end of a chain of
Listen
modules, allowing you
to record the main outputs without using patch
cables.
How to Daisy-chain
To daisy-chain two modules, use a 3-pin cable to connect the
OUTS
header of one module to the
INS
header of
another. You can continue to connect more modules in the same way,
OUTS
to
INS
.
A suitable connecting cable can be purchased from 4ms Company or many of our dealers. You also can find or
create your own cable. The cable must fit a single row of three pins with a pin spacing of 0.1” (2.54mm). The pins
are 0.2” tall (5mm), which is the same spacing, size and length as the pins on standard Eurorack power headers.
Make sure the same color wire is on top on both sides of the connecting cable. If one side is reversed, the left and
right channels will be reversed (though no damage or malfunction will occur).
Main Mixes and Sub-mixes
The
Main Level
knob controls the level that’s passed to the next
Listen
module via the
OUTS
header. By
patching related signals into the same
Listen
module, you can create sub-mixes with a single knob for level
control.
For example, see the photo above. Two
Listen Four
modules are connected such that one module’s
OUTS
header connects to the other module’s
INS
header. Let’s say you patch some polyrhythmic drum sounds into the
first
Listen Four
, and patch some processed field recordings into the second
Listen Four
. The output jacks on
the second
Listen Four
will be a mix of everything (the drums and field recordings), and the
Main Level
knob will
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