Gecko Exodus MXR 1604DSP User manual

GECKO® EXODUS MXR 1604DSP / MXR 3204DSP
www.geckomus c.net
www.geckomus c.net
OWNER'S MANUAL
OWNER'S MANUAL

GECKO® SAFETY INSTRUCTIONS & SYMBOLS GUIDE
GECKO® SAFETY INSTRUCTIONS & SYMBOLS GUIDE
For your own safety and to avoid invalidation of the warranty, all text marked with these symbols should be
read carefully.
SYMBOLS:
SYMBOLS:
SAFETY INSTRUCTIONS:
SAFETY INSTRUCTIONS:
•To reduce the risk of electrical shock, do not remove covers. No user serviceable parts inside. Please
refer servicing to qualified personnel.
•To reduce the risk of electrical shock or fire, do not expose the equipment to rain or moisture.
•o not impose unnecessary stress on your equipment (i.e. placing heavy objects on it, overscrewing its
mounting etc).
•Read and keep the instruction manuals in a safe place for future references.
•o not attempt to clean the equipment with chemical solvents as this may damage the finish. Clean only
with dry cloth.
•o not block any ventilation openings.
•o not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that
produce heat.
•o not defeat the purpose of the polarized or grounding type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide
blade or the grounding prong is provided for your safety. If the provided plug does not fit into your outlet,
consult an electrician for the replacement of the obsolete outlet.
•Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
•Unplug the apparatus during lightning storms or when it is not in use for a long period of time.
NOTES
NOTES
Contain important information and useful tips on the operation of your equipment.
WARNING
WARNING
The lightning flash with arrowhead symbol within an equilateral triangle, is intended to
alert the user to the presence of uninsulated dangerous voltage within the product’s
enclosure that may be of sufficient magnitude to constitute a risk of electric shock.
CAUTIONS
CAUTIONS
The exclamation point within an equilateral triangle is intended to alert the user to the
presence of important operating and maintenance (servicing) instructions in thee
literature accompanying the appliance. Please read the manual carefully.
H
HEADPHONES EADPHONES SAFETY SAFETY WARNIN WARNING G
Contain important information and use useful tips on headphones outputs and monitoring
levels.
!

•Use only attachments / accessories specified by the manufacturer.
•Always shut down power supply when not in use to save energy and for prolonged lifespan.
•Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary
considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if
exposed to sufficiently intense noise for a period of time. The U.S. Government’s Occupational Safety
and Health Administration (OSHA) has specified the permissible noise level exposures shown in the
following chart. According to OSHA, any exposure in excess of these permissible limits could result in
some hearing loss. To ensure against potentially dangerous exposure to high sound pressure levels, it is
recommended that all persons exposed to equipment capable of producing high sound pressure levels
use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or
over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if
exposure is in excess of the limits set forth here:
Duratio /Day (Hours) dB, Sou d Pressure Level (SPL) Descriptio s
Below 90 dB Safe zone
8.00 90 Hearing damage
6.00 92
4.00 95
3.00 97
2.00 100 Serious hearing damage
1.50 102
1.00 105
0.50 110
0.25 or less 115 Human pain threshold
GECKO MUSIC GROUP
GECKO MUSIC GROUP
No. 59, 59-1, 61, 61-1, 63, 63-1, Jalan PE 3, Taman Paya Emas,
Paya Rumput, 76450 Melaka, Malaysia.
Mobile: [phone]
Email: [email protected]t • Website: www.geckomusic.net

FOREWORD
FOREWORD
ear Friends,
Thank you very much for purchasing quality products by GECKO MUSIC GROUP. I am indeed very
delighted that we have journeyed this far, setting new standards in the audio and music industry while
touching and changing lives along the way!
At GECKO MUSIC GROUP we focus on developing nothing but the best professional audio equipment and
premium grade musical instruments you ever need! It has been our philosophy all this while that good sound
reproductions can be achieved at a fraction of a premium. Our engineering team is constantly doing research
and development to meet this objective. We thank God that by HIS grace, we have succeeded in developing
the revolutionary C.R.I.S.T.A.L.® Audiophile technology that is changing the way how sound is being
encoded, reproduced and managed!
On behalf of GECKO MUSIC GROUP, I would like to pledge our continuing commitment to uphold our
traditions in serving music and audio communities around the world with more value-added highest possible
quality GECKO® professional audio equipment and premium grade musical instruments!
Once again, thank you very much for your support.
Yours truly,
aniel Foo
Founder / Chairman
GECKO MUSIC GROUP

TABLE OF CONTENTS
TABLE OF CONTENTS
INTRODUCTION 1
CONTROL ELEMENTS 2
MAKING CONNECTIONS 11
MOUNTING YOUR MIXING CONSOLE 11
SPECIFICATIONS 12
WARRANTY 13
NOTES: This manual covers the 16-channel GECKO® EXO US MXR
1604 SP mixing console and the 32-channel GECKO® EXO US
MXR 3204 SP mixing console. As both devices are virtually
identical, this manual will discuss the GECKO® EXO US MXR
1604 SP.
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© GECKO MUSIC GROUP. All Rights Reserved.

INTRODUCTION
INTRODUCTION
The GECKO® EXO US audiophile mixing console is the perfect solution for the modern day multi-style
professional audio installations, live sound reinforcement and studio applications. Anyone who has used or
heard our GECKO® professional audio equipment, will be familiar with its ability to create a warm, smooth,
and clean sound that can inject more soul into your music masterpieces.
Everything about the EXO US has been designed to give you maximum audio fidelity, from the 32-BIT
UTOPIA igital Signal Processing ( SP) technology to the superb sounding C.R.I.S.T.A.L.® Audiophile
PreAmps.
Equipped with a comprehensive range of GROUP, AUX, and OUTPUT options, you can be sure that the
EXO US desk is not only a fantastic piece of engineering, it also makes complex mixes easy!
The EXO US is available in two options, the 16-channel MXR 1604 SP and 32-channel MXR 3204 SP,
and is highly recommended for singers, musicians, audiophile enthusiasts, and sound engineers seeking
pure sounds.
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© GECKO MUSIC GROUP. All Rights Reserved.

CONTROL ELEMENTS
CONTROL ELEMENTS
FRONT PANEL
NOTES: Regardless of the HPF switch setting, the mixing console does not apply
this HPF to the LINE inputs of STEREO input channels.
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© GECKO MUSIC GROUP. All Rights Reserved.
1
ON ON ON ON ON ON
CHANNEL CONTROL SECTION
2 3
4
5
6
7
8
9
10
11
12
1. GAIN CONTROL
This control adjusts the sensitivity of both
MIC (XLR) and LINE (¼” TRS) inputs. Both
the MIC and LINE inputs are electronically
balanced, and are located on the rear
connector panel.
The -60 to -16 scale indicates the MIC input
adjustment level. The –34 to +10 scale
indicates the LINE input adjustment level.
The EXO US GAIN structure employs the
revolutionary GECKO® C.R.I.S.T.A.L.®
Audiophile PreAmps technology.
2. PEAK LED
The PEAK LE detects the peak level of
the post-equalizer signal, and lights up red
when the level reaches 3dB below the
clipping level. On stereo input channels
equipped with XLR (female) MIC inputs
(Channels 9/10 and 11/12), the PEAK LE
detects both the post-equalizer and post-
preamp peak levels, and lights up red if
either of these levels reaches 3dB below
the clipping level.
3. HIGH PASS FILTER (HPF) SWITCH
This switch toggles the HPF ON or OFF. To
turn the HPF ON, press the switch in. The
HPF cuts frequencies below 80Hz.
Channels 1 to 8
(Monaural)
Channels 9/10, 11/12, 13/14, 15/16
(Stereo)

4. EQUALIZER (EQ)
MONAURAL CHANNELS (CHANNELS 1 TO 8):
This three-band equalizer adjusts the channel’s high, mid, and low frequency bands. Setting the knob to the
position produces a flat (linear) frequency response. Turning the knob to the right boosts the
corresponding frequency band, while turning to the left cuts the band. The following table shows the EQ type,
base frequency, and maximum cut/boost for each of the three bands.
Ba d Type Base Freque cy Maximum Cut/Boost
HIGH Shelving 10kHz
±15dB
MI Peaking 250Hz – 5kHz, variable
LOW Shelving 100Hz
STEREO CHANNELS (CHANNELS 9/10, 11/12, 13/14, 15/16):
This four-band equalizer adjusts the channel’s high, hi-mid, lo-mid, and low frequency bands. Setting the
knob to the position produces a flat (linear) frequency response. Turning the knob to the right boosts the
corresponding frequency band, while turning to the left cuts the band. The following table shows the EQ type,
base frequency, and maximum cut/boost for each of the four bands.
Ba d Type Base Freque cy Maximum Cut/Boost
HIGH Shelving 10kHz
±15dB
HI-MI Peaking 3kHz
LO-MI Peaking 800Hz
LOW Shelving 100Hz
5. AUX1 / AUX2 CONTROLS
The AUX1 knob controls the signal level that the channel sends to the AUX1 bus; the AUX2 knob controls the
signal level to the AUX2 bus. These knobs should generally be set close to the position.
If you are using stereo channels, the signals from the L (O ) and R (EVEN) channels are mixed and sent
to the AUX1 and AUX2 buses.
NOTES: These controls allow you to output the signal to the AUX buses regardless
of the setting of the ST switch [9].
6. PRE SWITCH
Selects whether the pre-fader or the post-fader signal is fed to the AUX2 bus. If you set the switch ON
(pressed in), the mixing console sends the pre-fader signal (the signal prior to passage through channel
fader [12]), to the AUX2 bus, so that AUX2 output is not affected by the fader. If you set the switch OFF (out
position) the mixing console sends the post-fader signal to the AUX2 bus.
NOTES: This switch applies to AUX2 only. The signal to the AUX1 bus always
passes through the channel fader first.
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© GECKO MUSIC GROUP. All Rights Reserved.

7. EFFECT CONTROL
Adjusts the level of the signal sent from the channel to the EFFECT bus. Note that the signal level will also
vary according to the setting of the channel fader.
If you are using stereo channels (Channels 9/10, 11/12, 13/14, 15/16), the signals from the L (O ) and R
(EVEN) channels are mixed and then sent to the EFFECT bus.
8. PAN CONTROL (CHANNELS 1 TO 8), PAN/BAL CONTROL (CHANNELS 9/10, 11/12, 13/14, 15/16)
The PAN control determines the positioning of the channel’s signal on the GROUP 1-2/3-4 buses or on the
ST (STEREO) L and R buses.
The BAL control knob sets the balance between left and right channels. Signals into to the L input (O
channel) feed to the GROUP 1/3 bus or to the ST (STEREO) L bus; signals into the R input (EVEN channel)
feed to the GROUP 2/4 bus or the ST (STEREO) R bus.
NOTES: On channels where this knob provides both PAN and BAL controls (9/10,
11/12, 13/14, 15/16), the knob operates as a PAN control if you are inputting through
the MIC input or into the L (MONO) input only, and operates as a BAL control if you
are inputting into both L and R inputs.
9. ST SWITCH
This switch assigns the channel’s signal to the ST (STEREO) L and R buses. To send the signal to the
STEREO bus, set the switch ON by pressing it in. The switch lights up (amber) to indicate that it is ON.
10. PFL (PRE-FADER LISTEN) SWITCH
This switch lets you monitor the channel’s pre-fader signal. To set the switch ON, press it in. The switch lights
up (amber) in the ON mode. When the switch is ON, the mixing console outputs the channel’s pre-fader
signal to the PHONES and C-R OUT connectors, for monitoring.
11. GROUP SWITCHES
Use these switches to send the channel's signal to the GROUP 1-2 and/or GROUP 3-4 buses. Setting the
switch on (pressed in) causes the signal to be sent to the corresponding group buses.
NOTES: These switches allow you to assign the signal to either or both groups
regardless of the setting of the ST switch [9].
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© GECKO MUSIC GROUP. All Rights Reserved.

12. CHANNEL FADER
Adjusts the output level of the channel's input signal. Use these faders to adjust the volume balance among
the various channels.
NOTES: To reduce noise, set the fader sliders for unused channels all the way
down. Always ensure that you work with clean sources.
MASTER CONTROL SECTION
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© GECKO MUSIC GROUP. All Rights Reserved.
13. ST (STEREO) MASTER FADER
Adjusts the signal level to the STEREO OUT (ST OUT) output
connectors.
14. GROUP FADERS (1-2, 3-4)
Adjusts the signal level to the GROUP OUT 1 to 4 output
connectors.
15. TO ST SWITCH
If this switch is ON (pressed in), the mixing console sends the
signals processed by the GROUP FA ERS [14] onto the ST
(STEREO) bus. The GROUP 1/3 signals go to STEREO L and
the GROUP 2/4 signals go to STEREO R.
16. MASTER SEND
AUX1 / AUX2 CONTROLS
Adjust the level of the signal output to the AUX1 SEN and
AUX2 SEN output connectors.
MASTER EFFECT CONTROL
Adjusts the level of the signal on the EFFECT bus. This is the
signal that is output through the EFFECT output connectors.
1314
15
16
17
18
20
21
22
23
19
POWER
ST RL
PEAK
+5
+3
+1
0
-1
-3
-5
-7
-10
-15
-20
24
25
26
NOTES: These MASTER SEN
controls do not affect the level of the
signal sent from the internal digital
effects processor onto the MASTER
EFFECT bus.
ON