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Gemini PS-900 PRO Mode D'emploi page 3

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Introduction
Congratulations on purchasing the Gemini PS-900 PRO mixer. This state
of the art mixer is backed by a three year warranty, excluding
crossfader and channel slides. Prior to use, we suggest that you
carefully read all the instructions.
Features
4 Stereo Channels
State of the Art Cue Section
3 Phono/Line Convertible, 5 Line, and 3 Mic Inputs
Cut Feature for Bass, Mid and High for each channel
Gain, High, Mid and Bass tone controls for each channel
Talkover
Loop
Balanced and Unbalanced Master Outputs
BOOTH and Record outputs
Dual mode display
Digital Sampler with 5 Memory Banks
Battery backup to retain samples
Cautions
1. All operating instructions should be read before using this equipment.
2. To reduce the risk of electrical shock, do not open the unit. There are
NO USER REPLACEABLE PARTS INSIDE. Please refer servicing to
a qualified service technician.
3. Do not expose this unit to direct sunlight or to a heat source such as
a radiator or stove.
4. This unit should be cleaned only with a damp cloth. Avoid solvents or
other cleaning detergents.
5. When moving this equipment, it should be placed in its original
carton and packaging. This will reduce the risk of damage during
transit.
6. DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
7. DO NOT USE ANY SPRAY CLEANER OR LUBRICANT ON ANY
CONTROLS OR SWITCHES.
Connections
1. Before plugging in the power cord, make sure that the VOLTAGE
SELECTOR (46) switch is set to the correct voltage.
NOTE
2. Make sure that the POWER (41) switch is in the off position. The
POWER LED (42) will be off.
3. The PS-900 PRO is supplied with 4 sets of amp output jacks. The
BALANCED OUTPUT (48) jacks are used to connect to your main
amplifier using standard XLR cables. We recommend using the
balanced amp outputs if the cables to your amp are 25 feet or more.
BALANCED OUTPUTS have three separate conductors, two of
which are signal (positive and negative) and one shield (ground). Pin
1 is ground (shield). Pin 2 is signal hot (positive). Pin 3 is signal cold
(negative). The MAIN OUTPUT (49) jacks are unbalanced and used
to connect to your main amplifier. The REC OUTPUT (51) jacks can
be used to connect the mixer to the record input of your recorder
enabling you to record your mix. The BOOTH OUTPUT (50) jacks
allow you to hook up an additional amplifier.
4. The MIC 1 (1) input (found on the front panel) accepts a 1/4" or XLR
connector. The MIC 2 (66) input and the MIC 3 (65) input (found on
the rear panel) accept 1/4" connectors. All accept balanced and
unbalanced microphones.
5. On the rear panel are 3 stereo PHONO/LINE (57, 60, 63) inputs and
5 stereo LINE (54, 55, 56, 59, 62) inputs. The PHONO/LINE
SWITCH (58) enables you to set the (57) input to Phono or Line. The
PHONO/LINE SWITCH (61) enables you to set the (60) input to
Phono or Line. The PHONO/LINE SWITCH (64) enables you to set
the (63) input to Phono or Line. The phono inputs will accept only
turntables with a magnetic cartridge. A GROUND SCREW (67) for
you to ground your turntables is located on the rear panel. The stereo
line inputs will accept any line level input such as a CD player, a
cassette player, etc.
6. Headphones can be plugged into the front panel mounted
HEADPHONE (45) jack.
7. The PS-900 PRO comes with a front panel BNC LIGHT (40) jack.
This jack is for use with a gooseneck light like the Gemini GNL-700.
8. There are LOOP INPUTS (53) and LOOP OUTPUTS (52) located on
the rear panel. If you are using an outboard signal processor, you
can use the LOOP OUTPUTS (52) to send the signal to the device
and the LOOP INPUTS (53) to bring the signal back in to the mixer.
The unit comes with jumpers to be used with the loop inputs and
outputs. Keep the jumpers in the unit if you are not using the loop to
prevent interruptions in your music program.
Using the Ground Lift Switch
Depending on your system configuration, sometimes applying the
ground will create a quieter signal path. Sometimes lifting the ground
can eliminate ground loops and hum to create a quieter signal path.
1. With the mixer on, listen to the system in idle mode (no signal
present) with the ground applied (the GROUND LIFT SWITCH (68) in
the left position).
2. Then turn the power off before moving the GROUND LIFT
SWITCH (68). Lift the ground by moving the GROUND LIFT
SWITCH to the right, turn the power back on and listen to determine
which position will provide a signal devoid of background noise and
hum. Keep the GROUND LIFT SWITCH in the ground position if the
noise level remains the same in either position.
CAUTION: DO NOT TERMINATE THE AC GROUND ON THE POWER
MIXER IN ANY WAY. TERMINATION OF THE AC GROUND CAN BE
HAZARDOUS.
Operation
1. POWER ON: Once you have made all the equipment connections to
your mixer, press the POWER SWITCH (41). The power will turn on
and the POWER LED (42) will glow RED.
2. CHANNEL 1: The GAIN (9), HIGH (10), MID (11), and LOW (12)
controls allow you to fully adjust the selected source. Switch # (13)
allows you to select the PHONO 1/LINE 1 (63) or the LINE 2 (62)
input. The CHANNEL SLIDE (14) controls the input level of this
channel.
3. CHANNEL 2: The GAIN (9), HIGH (10), MID (11), and LOW (12)
controls allow you to fully adjust the selected source. Switch # (15)
allows you to select the PHONO 2/LINE 3 (60) or the LINE 4 (59)
input. The CHANNEL SLIDE (16) controls the input level of this
channel.
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