Intellijel Stereo Line In 1U User manual

Stereo Line In 1U System Manual
Stereo Line In 1U System
Stereo Balanced Line Audio Input
Manual Revision: 2020.03.02

Stereo Line In 1U System Manual 
Table of Contents 
Table of Contents 1
Compliance 2
System Overview 2
Installation 4
Before Your Start 4
Installing Your Module 5
Connecting a Stereo Line In 1U to a Stereo In Jacks 1U 7
Connecting a Stereo Line In 1U to the ¼” Jacks on a 7U Case 8
Connecting Two Stereo Line In 1U Modules to a 7U Case 9
Connecting Both a Stereo Line In 1U and a Stereo Line Out 1U to a 7U Case 9
Connecting a Stereo Line In 1U to a Palette Case’s ¼” Jacks 10
Front Panel (Stereo Line In 1U) 11
Controls 11
Inputs & Outputs 12
Front Panel (Stereo In Jacks 1U) 13
Inputs & Outputs 13
Technical Specifications 14
Stereo Line In 1U 14
Stereo In Jacks 1U 14
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Stereo Line In 1U System Manual 
Compliance 
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
Changes or modifications not expressly approved by Intellijel Designs, Inc. could
void the user’s authority to operate the equipment.
Any digital equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instruction manual, may cause harmful interference to radio
communications.
This device meets the requirements of the following standards and directives:
EMC: 2014/30/EU
EN55032:2015 ; EN55103-2:2009 (EN55024) ; EN61000-3-2 ; EN61000-3-3
Low Voltage: 2014/35/EU
EN 60065:2002+A1:2006+A11:2008+A2:2010+A12:2011
RoHS2: 2011/65/EU
WEEE: 2012/19/EU
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Stereo Line In 1U System Manual 
System Overview
Use the Stereo Line In 1U system to bring external audio into your modular system for
processing. The system works with balanced +4 dBu professional audio products and with
-10dbV unbalanced gear.
The Stereo Line In 1U system comprises two components:
1. The Stereo Line In 1U module:
A ribbon cable connects this module to either the Stereo In
Jacks 1U module, or to a compatible Intellijel case with built-in
¼” jacks. It has independent gain controls for the left and right
channels, along with signal level LEDs. It contains all the gain
control circuitry to drive a eurorack system at the proper levels,
and features two ⅛” output jacks for patching your external
signal into other eurorack modules.
2. Either a Stereo In Jacks 1U module, or a case with built-in ¼” audio jacks, such as
Intellijel’s Palette or 7U cases (with a 2nd generation Audio Jacks board ):
Stereo In Jacks 1U Module
If you don’t own an Intellijel case with built-in compatible ¼”
jacks, then you need to purchase a Stereo In Jacks 1U module,
which connects via ribbon cable to the Stereo Line In 1U
module to provide the ¼” TRS input jacks necessary for
connecting external audio sources.
Palette Case
If you own an Intellijel Palette case, you can connect the Stereo
Line In 1U module directly to its built-in pair of ¼” jacks, rather
than purchasing a Stereo In Jacks 1U .
7U Case w/ 2nd Generation Audio Jacks Board
If you own an Intellijel 7U case with a 2nd generation Audio
Jacks Board (distinguished by the row of shrouded headers
along its bottom edge), you can use its jacks rather than
purchasing a Stereo In Jacks 1U module.
If your 7U case has a 1st generation Audio Jacks Board , you
can purchase a 2nd generation board to replace your old
board.
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Stereo Line In 1U System Manual 
Installation
This module is designed for use within an
Intellijel-standard 1U row, such as
contained within the Intellijel 4U and 7U
Eurorack cases. Intellijel’s 1U specification
is derived from the Eurorack mechanical
specification set by Doepfer that is
designed to support the use of lipped rails
within industry standard rack heights.
Before Your Start 
Intellijel Eurorack modules are designed to be used with a Eurorack-compatible case and power
supply. We recommend you use Intellijel cases and power supplies.
Before installing a new module in your case, you must ensure your power supply has a free
power header and sufficient available capacity to power the module:
● Sum up the specified +12V current draw for all modules, including the new one. Do the
same for the -12 V and +5V current draw. The current draw will be specified in the
manufacturer's technical specifications for each module.
● Compare each of the sums to specifications for your case’s power supply.
● Only proceed with installation if none of the values exceeds the power supply’s
specifications. Otherwise you must remove modules to free up capacity or upgrade your
power supply.
You will also need to ensure your case has enough free space (hp) to fit the new module. To
prevent screws or other debris from falling into the case and shorting any electrical contacts, do
not leave gaps between adjacent modules, and cover all unused areas with blank panels.
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Stereo Line In 1U System Manual 
Similarly, do not use open frames or any other enclosure that exposes the backside of any
module or the power distribution board.
You can use a tool like ModularGrid to assist in your planning. Failure to adequately power your
modules may result in damage to your modules or power supply. If you are unsure, please
contact us before proceeding.
Installing Your Module
When installing or removing a module from your case
always turn off the power to the case and disconnect the
power cable. Failure to do so may result in serious injury or
equipment damage.
Ensure the 10-pin connector on the power cable is
connected correctly to the module before proceeding. The
red stripe on the cable must line up with the -12V pins on
the module’s power connector. Different modules use
different ways to indicate the -12V pins. Some may be
labelled with “-12V;” a white stripe next to the -12V pins;
the words “red stripe;” or some combination of these.
Additionally, some modules may have shrouded headers,
thus preventing backward connections.
Most modules will come with the cable already
connected but it is good to double check the
orientation. Be aware that some modules may
have headers that serve other purposes so ensure
the power cable is connected to the right one.
The other end of the cable, with a 16-pin
connector, connects to the power bus board of
your Eurorack case. Ensure the red stripe on the
cable lines up with the -12V pins on the bus board.
On Intellijel power supplies the pins are labelled
with the label “-12V” and a thick white stripe:
If you are using another manufacturer’s power
supply, check their documentation for instructions.
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Stereo Line In 1U System Manual 
Once connected, the cabling between the module and power supply should resemble the
picture below:
Before reconnecting power and
turning on your modular
system, double check that the
ribbon cable is fully seated on
both ends and that all the pins
are correctly aligned. If the pins
are misaligned in any direction
or the ribbon is backwards you
can cause damage to your
module, power supply, or other
modules.
After you have confirmed all the
connections, you can reconnect
the power cable and turn on
your modular system. You should immediately check that all your modules have powered on
and are functioning correctly. If you notice any anomalies, turn your system off right away and
check your cabling again for mistakes.
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Stereo Line In 1U System Manual 
Connecting a Stereo Line In 1U to a Stereo In Jacks 1U 
The Stereo Line In 1U module ships with a ribbon cable for connecting to a pair of ¼” TRS
audio jacks — either those built-in to the 2nd generation Audio Jacks Board installed in Intellijel
7U cases ; an Intellijel Palette case, or those contained within the separately available Stereo In
Jacks 1U module.
To connect the Stereo Line In 1U module to the Stereo In Jacks 1U module:
1. Connect one end of the supplied ribbon cable to the keyed 6-pin connector on the
Stereo Line In 1U module and the other end to the keyed 6-pin connector on the
Stereo In Jacks 1U .
The signal arriving at the Stereo In Jacks’ ¼” TRS jacks is transferred into the
Stereo Line In 1U module for patching into your eurorack system at the correct voltage
levels.
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Stereo Line In 1U System Manual 
Connecting a Stereo Line In 1U to the ¼” Jacks on a 7U Case 
The Stereo Line In 1U module ships with a ribbon cable for connecting to a pair of ¼” TRS
audio jacks — either those built-in to the 2nd generation Audio Jacks Board installed in Intellijel
7U cases ; an Intellijel Palette case, or those contained within the separately available Stereo In
Jacks 1U module
To connect the Stereo Line In 1U module to the jacks installed in your 7U case:
1. Determine whether your case uses a 1st or 2nd generation Audio Jacks Board.
1st generation boards (included with cases built before early 2019) have a single
connector along the bottom. 2nd generation boards have a large shrouded header
flanked by two smaller shrouded headers, flanked by two link connectors.
IMPORTANT: You can only connect the Stereo Line In 1U module to 7U cases with 2nd
generation Audio Jacks Boards. If you have a 1st generation board, you can purchase a
2nd generation board to replace your original Audio Jacks Board.
2. Connect one end of the supplied ribbon cable
to the keyed 6-pin connector on the Stereo
Line In 1U module and the other end to one
of the two keyed 6-pin connectors on the
Audio Jacks Board .
Audio arriving at the corresponding pair of ¼”
jacks is sent through to the Stereo Line In 1U
module for patching into your eurorack
system at the correct voltage levels.
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Stereo Line In 1U System Manual 
Connecting Two Stereo Line In 1U Modules to a 7U Case
You can connect a second Stereo Line In 1U module
to the other 6-pin connector on the Audio Jacks
board, giving you four audio inputs in a 7U case.
1. Using the ribbon cable supplied with the
Stereo Line In 1U module, connect it to one of
the two keyed 6-pin connectors on the 2nd
generation Audio Jacks Board .
2. Connect the other Stereo Line In 1U module
to the remaining keyed 6-pin connector on the
Audio Jacks Board .
The input for each Stereo Line In 1U module
appears at the corresponding set of ¼” jacks
on the Audio Jacks Board .
Connecting Both a Stereo Line In 1U and a Stereo Line Out 1U to a
7U Case
You can connect both a Stereo Line In 1U and a
Stereo Line Out 1U module to the Audio Jacks board,
giving you two inputs and two outputs on a 7U case.
1. As discussed previously, connect the Stereo
Line In 1U module to one of the two keyed
6-pin connectors on the 2nd generation Audio
Jacks Board .
2. Using the ribbon cable supplied with the
Stereo Line Out 1U module, connect it to the
other keyed 6-pin connector on the 2nd
generation Audio Jacks Board .
Two of the 7U case’s ¼” inputs will then feed
the Stereo Line In 1U module, and the other
two will serve as outputs for the Stereo Line
Out 1U module.
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Stereo Line In 1U System Manual 
Connecting a Stereo Line In 1U to a Palette Case’s ¼” Jacks 
The Stereo Line In 1U module ships with a ribbon cable for connecting to a pair of ¼” TRS
audio jacks — either those built-in to the 2nd generation Audio Jacks Board installed in Intellijel
7U cases ; an Intellijel Palette case, or those contained within the separately available Stereo
Out Jacks 1U module.
To connect the Stereo Line In 1U module to the jacks installed in your Intellijel Palette case:
1. Connect one end of the supplied ribbon cable to the keyed 6-pin connector on the
Stereo Line In 1U module and the other end to the single keyed 6-pin connector on the
Palette case’s built-in circuit board.
Audio arriving at the corresponding pair of ¼” jacks is sent through to the Stereo
Line In 1U module for patching into your eurorack system at the correct voltage levels.
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Stereo Line In 1U System Manual 
Front Panel (Stereo Line In 1U) 
Controls  
A. INPUT GAIN L
Scales the input signal level,
which arrives via a ¼” jack
(ie. a Stereo Line In 1U
module, a Palette case, or a
7U case with 2nd generation
Audio Jacks board) connected
to the rear of this module.
Fully counterclockwise, the
input is completely attenuated.
Set fully clockwise, +15dB of
gain is applied to the input
signal before sending it to the
OUT L [1] jack.
B. INPUT GAIN R
Same as INPUT GAIN L [A] , except it works on the ¼” jack connected to the module’s
right channel, and outputs the attenuated/amplified signal to the OUT R [2] jack.
C. LEVEL L LEDs
This two-LED ladder indicates the amount of signal being fed to the OUT L [1] jack via
the left channel’s connected ¼” jack and attenuated/amplified by the INPUT GAIN L [A]
knob).
The green LED lights at the presence of signal, and grows brighter as the signal level
increases. The red LED lights turns on when the OUT L level is around 9V.
D. LEVEL R LEDs
This two-LED ladder indicates the amount of signal being fed to the OUT R [s] jack via
the right channel’s connected ¼” jack and attenuated/amplified by the
INPUT GAIN R [A] knob).
The green LED lights at the presence of signal, and grows brighter as the signal level
increases. The red LED lights turns on when the OUT R level is around 9V.
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Stereo Line In 1U System Manual 
Inputs & Outputs 
1. L Output
This jack carries the amplified, eurorack-level signal of an external signal patched into
the connected device’s left ¼” input jack (i.e, a Stereo In Jacks 1U module; a Palette
case; or an Intellijel 7U case with a 2nd generation Audio Jacks Board ).
The level of this signal is governed by the INPUT GAIN L knob [A] , and can be
monitored using the corresponding LEVEL L LEDs [C] .
2. R Output
This jack carries the amplified, eurorack-level signal of an external signal patched into
the connected device’s right ¼” input jack (i.e, a Stereo In Jacks 1U module; a Palette
case; or an Intellijel 7U case with a 2nd generation Audio Jacks Board ).
The level of this signal is governed by the INPUT GAIN R knob [B] , and can be
monitored using the corresponding LEVEL R LEDs [D] .
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Stereo Line In 1U System Manual 
Front Panel (Stereo In Jacks 1U) 
Inputs & Outputs 
1. LINE IN (L )
An external signal patched into this ¼”
TRS jack is passed through to the left
channel of a connected Stereo Line In 1U
module, where it’s amplified to eurorack
levels and made available to other
eurorack modules via the left ⅛” output on
the Stereo Line In 1U module.
This input supports both professional,
balanced +4 dBu equipment and
prosumer, unbalanced -10 dbV level gear.
2. LINE IN (R )
An external signal patched into this ¼” TRS jack is passed through to the right channel
of a connected Stereo Line In 1U module, where it’s amplified to eurorack levels and
made available to other eurorack modules via the right ⅛” output on the Stereo
Line In 1U module.
This input supports both professional, balanced +4 dBu equipment and prosumer,
unbalanced -10 dbV level gear.
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Stereo Line In 1U System Manual 
Technical Specifications 
Stereo Line In 1U  
Width
12 hp
Maximum Depth
38 mm
Current Draw
18 mA @ +12V | 12 mA @ -12V
Maximum Balanced Input Line Level
+13dbU
Maximum Gain
15db
Stereo In Jacks 1U  
Width
8 hp
Maximum Depth
39 mm
Current Draw
0 mA (passive module)
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