Iridium delivers responsive tube amp tones, ultra-high quality impulse
response speaker cabinets, and natural sounding room ambience. It
shines as the centerpiece of many different playing applications.
1
ON STAGE
HOUSE
PA SYSYTEM
DIRECT
BOX
Connect a pedalboard containing Iridium to a house PA system for
excellent repeatable tone, control, and flexibility in a live situation.
Monitor through the house monitoring system or in-ear monitors.
For a dedicated personal on-stage monitor, connect your pedalboard
to a powered full-range speaker.
POWERED
FULL-RANGE
MONITOR(S)
NOTE: Because the purpose of Iridium is to deliver amp and cab
tones, it is not desirable to enable Iridium in front of a guitar
amp. If you use the same pedalboard both with an amp and in
direct situations, simply bypass Iridium when using your board
with an amp.
pg 3
IRIDIUM - Amp & IR Cab
DIRECT
BOX
POWERED
FULL-RANGE
MONITOR(S)
HOUSE
PA SYSYTEM
DIRECT
BOX
POWERED
FULL-RANGE
MONITOR(S)
HOUSE
PA SYSYTEM
Connecting Iridium (cont.)
2
IN THE STUDIO
Connect Iridium directly to a recording interface for great guitar tone
instantly without the need to set up an amp or microphones.
3
AT HOME
Connect headphones directly to Iridium to experience immersive
classic amp tones in a natural sounding room without an amp
ADDITIONAL TIPS FOR STAGE, STUDIO, AND HOME
Iridium can be used on its own or as part of a pedalboard.
• Place Iridium at the end of your signal chain to capture the sound
of the entire pedalboard connected to the front of an amp.
.
• Place Iridium before time-based effects for a different tonal
character if you prefer.
• Use headphones to check out a pedalboard that normally connects
to an amp by connecting its output(s) to Iridium.
pg 4
IRIDIUM - Amp & IR Cab
Connecting Iridium (cont.)
4
OTHER WAYS TO USE IRIDIUM
Iridium also allows for specialized use cases.
Amp processing without IR cabs
Select Iridium’s Cab Bypass mode and connect the output(s) to the
effects return or power amp input on a guitar amp.
(See page 15 for Cab Bypass mode configuration details.)
IR cab processing without amps
Select Iridium’s Amp Bypass mode and connect a preamp or preamp
pedal (such as Riverside) to Iridium’s input.
(See page 15 for Amp Bypass mode configuration details.)
WARNING: Never connect the Speaker Output of a guitar amplifier
to Iridium! If you wish to use Iridium’s IR cabs with a guitar amp,
you can either use a line out from the amp or the amp’s effects
send. Note that you will still need to connect a load to the speaker
output with either of these options. You may also need to set
Iridium to Line input level.
(See page 16 for Input level configuration details.)
Non-cab WAV files
It is possible to load any 24bit/96kHz WAV impulse response into
Iridium, including impulses of bass cabs, acoustic instrument body
resonance, samples of music, etc.
pg 5
IRIDIUM - Amp & IR Cab
STEREO
SUM
USB
Controls and Connections - Front Panel
AMP
Selects one of three different amp types.
CAB
CABAMP
round
Based on* a Fender
®
Deluxe Reverb®, this amp
round
round
chime
chime
punch
punch
AMP
is clean, bright, and mid-scooped, with plenty
of headroom. While preserving access to all the tones originally
available from the Deluxe’s Normal channel, our amp gives you
something extra: a midrange control. With the MIDDLE knob at
noon, you get the original fixed-resistor value and standard tonal
characteristics of the Deluxe. Turn down the MIDDLE control for a
more scooped sound, or turn it up for tweed-era tones.
chime
®
Based on* the Brilliant channel of a Vox
AC30TB, this amp is jangly
and bright, providing air for subtle passages with a light touch, and
bite when you want to dig in. The MIDDLE knob acts a tone cut knob,
providing high-end roll-off just before the power tubes, per the
AC30TB design. In addition to the full available gain of the original
amp, toward the top end of the DRIVE knob’s range of travel, we’ve
added a frequency-shaped front end boost to tighten the low end
while driving the amp further into saturation.
a
ab
bc
c
punch
®
Based on* a Marshall
Plexi (Super Lead model number 1959), this
powerful amp is meatier, with higher gain than the other two amps,
and has a powerful midrange response. This amp features a buttery,
smooth overdrive. Setting the DRIVE control at around 2 o’clock
gets you the maximum gain the original Plexi design allowed. Turn
the DRIVE beyond 2 o’clock to access custom hot-rodded Plexi high
gain tones.
*All product names are trademarks of their respective owners, which are in no way associated or
affiliated with Strymon. These product names, descriptions and images are provided for the sole
purpose of identifying the specific products that were studied during Strymon’s sound design process.
See page 34 for a list of U.S. registered trademarks.
pg 6
IRIDIUM - Amp & IR Cab
STEREO
SUM
USB
Controls and Connections - Front Panel
CAB
The CAB switch selects one of three speaker
cabinet options for each amp type. Each cab is
made up of left and right 24 bit/96 kHz 500ms
round
round
round
chime
chime
chime
punch
punch
punch
AMP
AMP
CABAMP
CAB
impulse responses. Mono cabs have the same IR
loaded into both sides.
Iridium is pre-loaded with a curated set of 9 speaker cabinet IRs from
®
top IR vendors Cabir.eu, Celestion
, OwnHammer, and Valhallir.at.
The factory installed IRs are based on* the following:
A more complete description of these IRs and the original speaker
cabinets can be found on Appendix 2. Additionally, the factory installed
IRs can be replaced with any 24 bit/96 kHz WAV format IRs using our
free Strymon Impulse Manager software available at strymon.net/
support/iridium.
*All product names are trademarks of their respective owners, which are in no way associated or
affiliated with Strymon. These product names, descriptions and images are provided for the sole
purpose of identifying the specific products that were studied during Strymon’s sound design process.
See page 34 for a list of U.S. registered trademarks.
pg 7
IRIDIUM - Amp & IR Cab
STEREO
MONO
INOUT LOUT REXP
SUM
USB
Controls and Connections - Front Panel (cont.)
DRIVE
Adjusts the amount of gain applied to the incoming
signal, controlling both the analog JFET input stage
and the preamp gain of the selected amp. As the DRIVE
amount is increased, the LEVEL knob is compensated
allowing the gain to increase while the output level
remains the same.
CABAMP
roundchimepunch
DRIVELEVEL
DRIVELEVEL
abc
BASS
MIDDLE
FAVON
amp & ir cab
TREBLE
ROOM
ON
LEVEL
Controls the output volume when the pedal is ON. Controls
the left and right outputs as well as the headphone output.
NOTE: For a better listening experience, we have included a LEVEL TRIM
Live Edit function that allows for the overall output volume from both
the OUT L and OUT R outputs along with the headphone output to be
compensated without affecting the leveling between your saved presets.
This is a useful way to adjust the level when using headphones.
(See
page 14 for details.)
pg 8
IRIDIUM - Amp & IR Cab
STEREO
MONO
INOUT LOUT REXP
SUM
USB
Controls and Connections - Front Panel (cont.)
Each tone knob on a classic amplifier controls a potentiometer that
interacts with the other components that make up the tone stack,
creating a complex, interdependent frequency response. Our Matrix
Modeling™ process captures all these subtleties, faithfully delivering
the unique tonal qualities of each amp type.
MIDDLE
Adjusts the tone stack of the round
and punch amp types to highlight the
middle frequencies.
Rolls off high frequencies as the knob
is turned up for the chime amp type.
DRIVELEVEL
BASS
BASS
CABAMP
TREBLE
TREBLE
abc
ROOM
ROOM
roundchimepunch
MIDDLE
MIDDLE
FAVON
TREBLE
Adjusts the tone
stack of the selected
amp type to highlight
the high frequencies.
BASS
Adjusts the tone
stack of the
selected amp type
to highlight the
low frequencies.
amp & ir cab
ROOM
Controls the level of natural room ambience,
placing your amp and cab in a natural sounding
room by combining 256ms impulse responses of
real rooms with algorithmic reverb for extended
decay. The IR portion of the hybrid rooms is not
replaceable.
(See page 13 for details about adjusting the Room Size.)
pg 9
IRIDIUM - Amp & IR Cab
STEREO
MONO
INOUT LOUT REXP
SUM
USB
Controls and Connections - Front Panel (cont.)
CABAMP
roundchimepunch
DRIVELEVEL
abc
BASS
FAVON
FAVON
FAV
Recalls a stored Favorite setting.
Includes all knob and switch
settings. Press and hold until
the FAV LED blinks to save a new
Favorite setting.
Favorite presets can also be
saved using MultiSwitch Plus or
an external MIDI device.
(See page 22 for details about saving
while using MultiSwitch Plus.)
MIDDLE
TREBLE
ROOM
amp & ir cab
ON
Activates amp, cab, and room
processing. LED indicates On/Off
state, LED color indicates Output
mode.
LED color indicates the selected
Output mode. RED indicates
Normal mode (default).
(See page 15 for Output mode
configuration details.)
(See page 28 about saving while using
MIDI.)
pg 10
IRIDIUM - Amp & IR Cab
Controls and Connections - Rear Panel
Audio Input Selector
MONO : Use with a mono input signal such as a guitar. Output is stereo. Use OUT L for mono connection.
STEREO : Use with a stereo input signal. Output is stereo.
SUM : Use with a stereo input signal that you would like to sum to mono. Use OUT L for summed output.
(See Appendix 3 for signal flow illustrations.)
STEREO
STEREO
MONO
MONO
INOUT LOUT REXP
INOUT LOUT R
IN
Stereo high impedance
input. Use a standard
instrument cable for mono.
Use a TRS stereo adapter/
cable for stereo input.
(See page 16 for configuration
details.)
OUTPUTS
Stereo audio signal outputs.
Use OUT L for mono.
SUM
SUM
USB
EXP
EXP
Multifunction communication jack
for external control of Iridium’s
features and functions. Use a
standard TRS expression pedal to
act as a volume pedal before the
amp (default configuration). EXP
input can also be used to connect
a Strymon MultiSwitch Plus,
MiniSwitch, or MIDI EXP cable for
remote preset selection and MIDI
automation.
(See page 19 for configuration details.)
pg 11
IRIDIUM - Amp & IR Cab
STEREO
MONO
INOUT LOUT REXP
SUM
USB
CABAMP
ROOM
TREBLE
BASS
FAVON
DRIVELEVEL
abc
amp & ir cab
MIDDLE
roundchimepunch
USB
Controls and Connections - Rear Panel (cont.)
USB
Can be used to load IR files
and firmware updates via
computer. More information
and the latest downloads can
be found at: strymon.net/
support/iridium
INOUT LOUT REXP
MONO
STEREO
SUM
POWER
Use the included power
supply or an adapter with
the following rating:
• 9VDC center negative
• 500mA minimum
USB
USB
Facing Panel
HEADPHONE OUT
Stereo 1/8 inch
headphone output.
Designed to be used with
relatively highimpedance
headphones (between 25
to 70 ohms). LEVEL knob
adjusts volume.
NOTE: The headphone output provides the same signal as the
quarter-inch outputs. Using higher impedance headphones
will lower the signal level from the headphone output. Use the
convenient LEVEL TRIM function to adjust the output level without
affecting the level saved to a Favorite setting or MIDI preset.
(See page 14 for details.)
pg 12
IRIDIUM - Amp & IR Cab
STEREO
MONO
INOUT LOUT REXP
SUM
USB
Live Edit Functions - Room Size
Determines the size of the room reverb.
roundchimepunch
DRIVELEVEL
CABAMP
abc
1
Press and hold
the ON footswitch.
Once both LEDs
flash, release the
footswitch.
2
Turn the ROOM knob to select the size of the Room.
ON LED indicates status.
Small - GREEN
Medium - AMBER (default)
Large - RED
MIDDLE
BASS
FAVON
amp & ir cab
TREBLE
ROOM
ROOM
ON
3
Press the ON or FAV footswitch to exit and store the
Room Size setting.
NOTE: Room size is saved per Favorite setting or preset.
pg 13
IRIDIUM - Amp & IR Cab
STEREO
MONO
INOUT LOUT REXP
SUM
USB
Live Edit Functions - Level Trim
Adjusts the output volume without altering the level that is saved to a
Favorite setting. This is useful when monitoring with headphones.
CABAMP
roundchimepunch
abc
1
Press and hold
the ON footswitch.
Once both LEDs
flash, release the
footswitch.
2
Turn the LEVEL knob to adjust the output level. FAV LED
indicates status.
Sweeps from -20 dB (GREEN) to +3 dB (AMBER).
LED turns RED when there is no boost or cut of the
output level, near the 12 o’clock position.
DRIVELEVEL
MIDDLE
BASS
FAV
amp & ir cab
TREBLE
LEVEL
ROOM
ON
ON
3
Press the ON or FAV footswitch to exit and store the
Level Trim setting.
NOTE: The Level Trim value is not stored as part of a preset
and resets each time the pedal powers up.
pg 14
IRIDIUM - Amp & IR Cab
STEREO
MONO
INOUT LOUT REXP
SUM
USB
Power Up Modes - Output Mode
CABAMP
roundchime
punch
DRIVELEVEL
DRIVE
abc
MIDDLE
BASS
FAVON
FAVON
2
Turn the DRIVE knob to select the
desired mode. FAV LED indicates
status.
Amp Bypass mode - GREEN
Cab and Room processing are active,
but Amp processing is disabled.
amp & ir cab
TREBLE
ROOM
1
Press and hold the
ON footswitch while
connecting power to
the pedal. Once both
LEDs flash, release
the footswitch.
3
Press the ON or FAV
footswitch to exit
and store the Output
mode setting.
Cab Bypass mode - AMBER
Amp and Room processing are active,
but Cab processing is disabled.
Normal mode - RED (default)
Amp, Cab and Room processing are
active.
NOTE: All Power Up functions persist through power cycles.
During normal operation, the ON LED will take on the color
of the selected mode when processing is enabled.
pg 15
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