Gemini GMX Operation Manual
OPERATIONS MANUAL | MANUAL DE INSTRUCCIONES
MANUEL D’ INSTRUCTIONS | BEDIENUNGSHANDBUCH
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Thank you for purchasing our GMX Media Controller. We are confident that the Gemini
platform of products will not only make your life easier through the use of the latest
technological advancements in cross-platform connectivity and sound reproduction but will
raise the bar for DJ and pro audio products. With the proper care & maintenance, your unit
will likely provide years of reliable, uninterrupted service. All Gemini products are backed by
a 1-year limited warranty*.
PREPARING FOR FIRST USE - Please ensure that you find these accessories
included with the GMX Media Controller:
(1) Power cord
(1) Operating instructions
(1) Safety and Warranty Information
LOADING/EJECTING USB DEVICES - Insert the USB memory device into the USB
input (H) on the top of the GMX. Upon loading the device, the LCD Display will show the
folders and tracks on the USB memory device. USB memory devices on the GMX are hot
swappable and can be removed or plugged in at any time.
*NOTE: Before powering off the GMX, remove any USB memory device to ensure that no corruption of
data occurs.
i n t r o d u c t i o n
CONTROLS
i n p u t s - o u t p u t s
1. Power Button
2. Play/Pause
3. Cue
4. Jog Wheel
5. Reverse
6. Scratch
7. Search
8. Performance Pads
9. Pitch Fader
10. Key Lock/Range
11. BPM Tap/Mode/Lock
12. Time/Text
13. Auto cue
14. Repeat
15. Wave [+] [-]
16. Waveform display
17. Browse/Back
18. Auto Loop
19. Shift
20. Loop In /2 - Loop Out X2 Reloop/Exit
21. Gain
22. EQ High/Mid/Low
23. Filter
24. PFL- Pre Fader Listen
25. Track Fader
26. MIDI
27. Master Volume
28. Booth Volume
29. Cue Volume
30. Cue Mix
31. Cue Select
32. Cross Fader
33. Mic/Aux Volume
A. Power In
B. USB Out
C. USB Thru/Hub
D. Master Out XLR & RCA
E. Booth Out RCA
F. Mic/Auxiliary Input
G. Headphone Out
H. USB Memory Input
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A
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REAR VIEW
B C
D
F G
E
TOP VIEW
H
DISPLAY
Waveform
Time Remaining/
Elapsed
Pitch
Range
BPM
Track Name
Loop Points/
Track Progress
FRONT VIEW
2
3
4
5
11
12
13
15
16
17
18
19
20
22
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24
25
23
28
21
31
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26
27
30
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CONNECTIONS
M As t E r ou t p u t - Plug one end of the XLR or RCA cables into the MASTER OUTPUT
(D) on the rear panel. Plug the other end of the XLR or RCA connectors into any available
inputs on your mixer or PA system.
B oot H o ut pu t - Plug one end of the RCA cables into the BOOTH OUTPUT (E) on
the rear panel. Plug the other end of the RCA connectors into any available line input on
your mixer or monitors.
u sB o ut - Plug in the USB cable into the USB OUT (B) on the rear panel. Plug the other
end of the USB cable into any available USB port on your computer. This will enable you to
use the GMX in MIDI mode.
u sB t Hr u/ H u B - Plug a USB cable into the USB THRU/HUB (C) in order to connect
additional USB controllers or devices to your computer.
u sB M EM o r Y d EV ic E i n p ut - Plug in a USB MEMORY DEVICE on the top center
panel (H). Upon loading the device, the LCD Display will show the folders and tracks on the
USB memory device.
H EA dp Ho n E ou tp u t - The GMX contains a 1/8” HEADPHONE OUTPUT (G) allowing
cueing of music before playback through the master outputs.
M ic i np u t - Plug a 1/4” cable into the MIC INPUT (F) to input a microphone or auxiliary
source into the mix.
PLAYBACK CONTROLS
BROWSING TRACKS/FOLDERS - Rotating the BROWSE rotary encoder (17) aides in
searching for files and folders on the USB Memory Device or within your DJ software.
To open a folder, highlight a folder and press in the BROWSE rotary encoder to select. To
load a track, highlight a track and push BROWSE buttons. To return to the previous folder,
press the BACK button.
PLAY/PAUSE - Pressing PLAY/PAUSE (2) will begin playback of the selected track.
Pressing PLAY/PAUSE again will pause playback and hold the track at the current position.
CUE - While the unit is in playback, press PLAY/PAUSE (2) to pause the track. While the
track is paused, press CUE (3) to set the cue point at the current position. The CUE
indicator illuminates when the CUE point is set. Pressing CUE again will take you to the cue
point and pause the track.
JOG WHEEL CONTROL - Pressing SCRATCH (6) enables the Jog Wheel to operate in
SCRATCH mode. Pressing SEARCH (7) enables the Jog Wheel to search through the track
in the desired direction (forward/reverse).
REVERSE - Pressing REVERSE (5) will begin playback in the reverse direction.
PITCH FADER - Moving the PITCH CONTROL FADER (9) will accelerate the
pitch/tempo when moved towards [+] and deaccellerate the pitch/tempo when it is moved
towards [-]. Holding SHIFT (19) and pressing the RANGE (10) button adjusts the range of
the PITCH CONTROL FADER.
KEY LOCK - KEY LOCK (10) allows tempo adjustment using the PITCH FADER () without
changing the original pitch. While KEY LOCK is on holding SHIFT (19) and pressing RANGE
(10) will allow you to set the range of tempo adjustment available.
REPEAT - To repeat a track press REPEAT (14). If it is illuminated the track will repeat
from it’s beginning or its cue point upon completion.
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BPM TAP/MODE - Press and hold the BPM (11) button to toggle between different BPM
modes: BPM ID3 / AUTO BPM / MANUAL BPM.
ID3 when BPM mode is set to ID3, the BPM information from the ID3 will be displayed.
AUTO BPM When BPM mode is set to AUTO BPM, the beats per meter is calculated
automatically and corresponding info is displayed on LCD in BPM field.
MANUAL BPM When BPM mode is set to MANUAL, the BPM button can be used to set
the beats per minute of playback by a series of TAPS at the desired tempo.
NOTE: If a BPM value is present in file info ID3 tag, the value is loaded into the unit and displayed.
LOCK - The LOCK (11) feature allows the user to set the desired value of the BPM by
rotating the BROWSE (17) rotary knob and pushing down to set BPM. After the mode is
activated the pitch/master tempo value will be automatically adjusted to match desired
BPM level. To enable the LOCK feature, press SHIFT (19) + LOCK (11) buttons and set the
desired BPM using BROWSE (17). To turn OFF the LOCK feature, press the SHIFT + LOCK
buttons again.
TIME/TEXT - The TIME (12) button will toggle the time display between remaining and
elapsed time. Holding SHIFT (19) and pressing TEXT (12) will will scroll through the track
information that is on the ID3 tag.
MIDI MODE - Pressing MIDI (26) will switch the GMX into MIDI mode if it is connected to
a computer. All playback will stop when switching between MIDI and standalone modes.
CUE CONTROLS
SETTING A CUE POINT - While the unit is in playback, press PLAY/PAUSE (2) to pause
the track. While the track is paused, press CUE (3) to set the cue point at the current
position. The CUE indicator illuminates when the CUE point is set.
AUTO CUE - The AUTO CUE (13) function sets the cue at the point immediately before
sound starts, skipping the beginning silent section of tracks. Press AUTO CUE (13) to enable
auto cue.
ADJUSTING THE CUE POINT - After the cue point has been programmed, press PLAY/
PAUSE (2) to pause the track. Rotate the jogwheel to adjust the cue position. Press CUE (3)
to set the cue point at the current position.
RETURNING TO THE CUE POINT - While the unit is playing and after the cue point
has been programmed, pressing CUE (3) will cause the unit to enter the pause mode (PLAY/
PAUSE BUTTON blinks) at the programmed cue point (the CUE LED is lit). Holding down
the CUE button changes the function to preview, and allows you to stutter start or play
from the programmed cue point. Releasing the CUE button will return the track to the
preset cue point.
SETTING HOT CUES - During playback or in pause mode, press the HOT CUE (18)
button to turn the PERFORMANCE PADS (8) into hot cue buttons. Press any of the
PERFORMANCE PADS at the point in the track where the hot cues are to be set.
Once pressed, the programmed HOT CUE will be illuminated.
PLAYING HOT CUES - During playback or in the pause mode, press a PERFORMANCE
PAD (8) and playback will start instantaneously from the point recorded on that HOT CUE.
DELETING A HOT CUE - While in hot cue mode hold SHIFT (19) and press the
PERFORMANCE PAD (8) which is storing the cue you would like to delete.
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LOOP CONTROLS
AUTO LOOP - During playback, press SHIFT (19) + AUTO LOOP (18) to switch the
performance pads to auto loop mode. Press a PERFORMANCE PAD (8) to set the loop in
point. Each performance pad corresponds to a predefined loop length between 1/8 and 16
bars.
SETTING A MANUAL LOOP - During playback, press LOOP IN (20) at the desired
starting position for the loop (loop in point).
Press LOOP OUT (20) at the desired ending position for the loop (loop out position). The
loop out point is now set and loop playback starts from the loop in point.
ADJUSTING A LOOP - To adjust a manual loop or Auto Loop once the loop is set, press
the /2 or X2 buttons (20) to halve or double the loop. By halving a loop consecutively you
can achieve loop roll effect.
CANCELING A LOOP - While the loop is engaged, press RELOOP/EXIT (20) to
disengage the loop. Playback continues after the loop out point.
RETURNING TO A LOOP - After canceling a set loop, press RELOOP/EXIT (20) during
playback to reengage the last set loop. Loop playback begins at the loop in point.
DELETING A LOOP - While in loop mode hold SHIFT (19) and press the PERFORMANCE
PAD (8) which is storing the loop you would like to delete.
MIXER SECTION
Each channel of the GMX has a rotary GAIN CONTROL (21), a 3-BAND EQUALIZER (22),
and a TRACK FADER (25) to make tonal and volume adjustments to each channel. The
GAIN CONTROL (21) adjusts the gain of the incoming signal on each channel. The 3-BAND
EQUALIZER (22) adjusts the tone of the incoming signal on each channel across 3 bands:
LOW, MID, and HIGH. The TRACK FADERS (25) are 60mm faders that adjust the sound
volume for each channel (adjustable from -∞ to 0 dB).
FILTER - The FILTER (23) effect is a band-pass filter and will filter out either the high
frequencies or the low frequencies. In the center position, there is no effect on the sound.
Adjusting the effect towards the left will gradually remove high frequencies until there is just
lowend (bass). Adjusting the effect towards the right will gradually remove the low
frequencies until only high frequencies (treble) remain.
PFL (PRE-FADER LISTEN) - The PFL (24) will assign the track output to the
cue/headphone output for listening
TRACK FADER - The TRACK FADER (25) will control the level of the individual track
volume going to the master and booth outputs , prior to the CROSS FADER () level.
CROSS FADER - The CROSS FADER (32) allows mixing between two decks.
MASTER VOLUME - The MASTER VOLUME (27) controls the right and left MASTER
OUTPUT which is the output of the overall mix.
*NOTE: Going above 0dB (into the red indicators) should be avoided as the signal will distort
and could damage to other equipment.
CUE MIX - The CUE MIX (30) controls the mix of the headphone output between the PFL
(cue mix) and PGM (master output) mix.
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MIDI CONTROLS
OPTIONAL CONNECTING TO A COMPUTER - The GMX is a plug and play device
that requires no additional software installation in order to work with your computer and
your DJ software. The GMX audio and MIDI drivers are compatible with PC and MAC.
Connect the USB cable from the unit’s rear USB port (D) to the computer. Press the MIDI
button (26) on the GMX. This will terminate any playback on the USB device.
After connecting the GMX Controller, start your DJ software and within the software
settings/prefences do the following:
• Select the GMX as your MIDI device
• Select the GMX as your AUDIO device
• Select the audio bit depth and sample rate
*NOTE: Higher bit depth and sampling rates will create greater latency and may impact performance.
MIDI MESSAGES - The GMX communicates with your computer via MIDI messages. These
MIDI messages are set within the controller, but can be re-mapped within your DJ software
to serve different functions. Please consult your DJ software’s user manual for instructions
on mapping MIDI messages within the software.
TROUBLESHOOTING
USB MEMORY DEVICE ERRORS - Some USB devices may not operate properly with
the GMX. Gemini accepts no resposibility for any possible data loss that may occur. To
ensure that data is not permanently lost, please make sure to backup any data prior to
connecting the USB device to the the unit.
• If the unit does not read the USB memory device, check to see if the memory device
was inserted completely.
• If a “Too many devices” message appears, it is because a USB hub is in use. The
GMX does not work with USB hubs. Disconnect the USB hub and connect the USB
memory device directly into the GMX.
• If a ”Media err. Please Check Media Format and Try Again” message appears, this
signifies that your USB memory device is formatted incorrectly.
MIDI ERRORS
• If the computer does not recognize the device, try powering
the unit off and rebooting the computer.
• If the DJ software does not list the device, ensure that you are using the latest
• version by downloading any updates to your DJ software. If the GMX mapping does
not appear in your DJ software’s list, go to geminidj.com for downloads and support.
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Felicidades y gracias por comprar el Controlador Multimedia GMX. Estamos seguros de que
nuestra gama de productos Gemini no solo le facilitará la vida por medio del uso de los
últimos avances tecnológicos en cuanto a conectividad inter-plataformas y reproducción
de sonido sino que subirá el listón en lo referente a productos audio profesionales y para
DJ. Con unos cuidados básicos, su unidad le ofrecerá años de un funcionamiento fiable y
sin problemas. Todos los productos Gemini incluyen una garantía limitada de 1 año*.
PASOS PREVIOS - Por favor, asegurarse de que se encuentran estos accesorios
incluidos con el controlador GMX:
(1) Cable de alimentación
(1) Cable USB
(1) Instrucciones y tarjeta de garantía
c Ar GA /E X p u Ls iÓ n d E un id Ad Es u s B / s d - Inserte la memoria USB en la
toma USB (H) de la parte superior del GMX. Tras cargar la memoria aparecerá en la pantalla
táctil LCD las carpetas y pistas que contiene.
*NOTA: Antes de apagar el GMX, extraiga cualquier memoria USB para asegurarse de que no se produzca
ninguna pérdida de datos.
INTRODUCCIÓN
CONTROLES
ENTRADAS - SALIDAS
1. Botón de encendido
2. Play/Pause
3. Cue
4. Jog Wheel
5. Reverse
6. Scratch
7. Búsqueda (Search)
8. Performance Pads
9. Pitch Fader
10. Key Lock/Range
11. BPM Tap/Mode/Lock
12. Tiempo/Texto
13. Auto cue
14. Repetición
15. Onda [+] [-]
16. Visualización en Forma de
Onda
17. Navegar/Retroceder
18. Auto Loop
19. Shift
20. Loop In /2 - Loop Out X2 Reloop/Exit
21. Ganancia
22. Ecualizador (Agudos/Medios/Bajos)
23. Filtro
24. PFL - Escucha Pre Fader
25. Track Fader
26. MIDI
27. Volumen Master
28. Volumen Booth
29. Volumen Cue
30. Cue Mix
31. Cue Select
32. Cross Fader
33. Volumen Micrófono/Auxiliar
A. Entrada Alimentador AC
B. Salida USB
C. USB Thru/Hub
D. Salida Master XLR y RCA
E. Salida Booth RCA
F. Entrada de Mic/Auxiliar
G. Salida de Auriculares
H. Entrada USB Memory
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A
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VISTA TRASERA
B C
D
F G
E
VISTA SUPERIOR
H
PANTALLA
VISTA TRASERA - VISTA FRONTAL
Forma de Onda
Tiempo Restante/
Transcurrido
Pitch
Rango
BPM
Nombre Pista
Puntos Loop/
Progreso Pista
2
3
4
5
11
12
13
15
16
17
18
19
20
22
32
24
25
23
28
21
31
29
26
27
30
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10
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