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Introduction
Congratulations on purchasing the Gemini PS-646 PRO2 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
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4 Stereo Channels
•
State of the Art Cue Section
•
1 Phono/Line Convertible, 2 Phono, 5 Line, and 2 Mic Inputs
•
Cut Feature for Bass, Mid and High for each channel
•
Gain, High, Mid and Bass tone controls for each channel
•
Beat Indicators
•
Talkover
•
Balanced and Unbalanced Master Outputs
•
Booth Output
•
Dual mode display
Cautions
1. Always test equipment before rack mounting. Retain a copy of your
sales receipt for warranty purposes.
2. All operating instructions should be read before using this equipment.
3. 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.
4. Do not expose this unit to direct sunlight or to a heat source such as a
radiator or stove.
5. This unit should be cleaned only with a damp cloth. Avoid solvents or
other cleaning detergents.
6. When moving this equipment, it should be placed in its original carton
and packaging. This will reduce the risk of damage during transit.
7. DO NOT EXPOSE THIS UNIT TO RAIN OR MOISTURE.
8. 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 (38) switch is set to the correct voltage.
NOTE
2. Make sure that the POWER (1) switch is in the off position.
3. The PS-646 PRO2 is supplied with 2 sets of amp output jacks. The
MASTER BALANCED OUTPUT (39) 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 OUTPUT AMP (40) jacks are unbalanced and used to connect to
your main amplifier. The OUTPUT BOOTH (41) jacks allow you to hook
up an additional amplifier.
4. The MIC 1 (3) input (found on the front panel) accepts an XLR
connector. The MIC 2 (50) input (found on the rear panel) accepts 1/4"
connectors. Each accept balanced and unbalanced microphones.
5. On the rear panel are 1 stereo PHONO/LINE (49) input, 2 stereo
PHONO (45, 47) inputs, and 5 stereo LINE (42, 43, 44, 46, 48) inputs.
The PHONO/LINE SWITCH (51) enables you to set the (49) input to
Phono or Line. The phono inputs will accept only turntables with a
magnetic cartridge. A GROUND SCREW (52) 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 (2) jack OR headphones can plugged into the
HEADPHONE (23) jack located on the side of the mixer.
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 (53) in the left
position).
2. Then turn the power off before moving the GROUND LIFT SWITCH
(53). 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 (1).
2. CHANNEL 1: The GAIN (4), HIGH (5), MID (6), and LOW (7) controls
allow you to fully adjust the selected source. Switch # (9) allows you to
select the PHONO 1/LINE 1 (49) or the LINE 2 (48) input. The
CHANNEL SLIDE (10) controls the input level of this channel.
3. CHANNEL 2: The GAIN (4), HIGH (5), MID (6), and LOW (7) controls
allow you to fully adjust the selected source. Switch # (11) allows you
to select the PHONO 2 (47) or the LINE 3 (46) input. The CHANNEL
SLIDE (12) controls the input level of this channel.
4. CHANNEL 3: The GAIN (4), HIGH (5), MID (6), and LOW (7) controls
allow you to fully adjust the selected source. Switch # (13) allows you
to select the PHONO 3 (45) or the LINE 4 (44) input. The CHANNEL
SLIDE (14) controls the input level of this channel.
5. CHANNEL 4: The GAIN (4), HIGH (5), MID (6), and LOW (7) controls
allow you to fully adjust the selected source. Switch # (15) allows you
to select the LINE 5 (43) or the LINE 6 (42) input. The CHANNEL
SLIDE (16) controls the input level of this channel.
NOTE
SUGGESTION: You can use the Cut Features on each channel to
remove Low, Mid and/or High to create special effects.
6. CROSSFADER SECTION: The CROSSFADER (22) allows the mixing of
one source into another. The PS-646 PRO2 features an assignable
crossfader. The ASSIGN (19, 20) switches allow you to select which
channel will play through each side of the crossfader. The ASSIGN (19)
switch has 4 settings (1, 2, 3 or 4) and allows you to select channel 1, 2,
3 or 4 to play through the left side of the crossfader. The ASSIGN (20)
switch has 4 settings (1, 2, 3 or 4) and allows you to select channel 1, 2,
3 or 4 to play through the right side of the crossfader. There are two OFF
(17, 18) buttons for the crossfader. When the OFF (17) button is
pressed, the left side of the crossfader will be inactive. When the OFF
(18) button is pressed, the right side of the crossfader will be inactive.
Using the OFF button, be sure to deactivate the crossfader before
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