Gemini PS-525 PRO User Manual
OPERATIONS MANUAL
Bedienungsanleltung
Manual de funcionamiento
Manual de fonctionnement
Manual del utente
PS-525 PRO
PROFESSIONAL STEREO PREAMP MIXER
Professionneller Stereo Vorverstärkermischpult
Mezclador-preamplificador estereofónico para el profesional
Mélangeur-préamplificateur stéréophonique pour le professionnel
Miscelatore-preamplificatore stereofonico per il professionale
Multi Language Instructions
English............................................................................Page 3
Deutsch...........................................................................Page 5
Español...........................................................................Page 7
Francais...........................................................................Page 9
Italiano............................................................................Page 11
1
CH1
-3
-9
-15
6
CH2
L
dB
+3
0
R
21
7
22
8
8
2
3
9
12
10
11
15
4
5
9
10
11
19
23
24
25
16
13
20
17
14
26
18
Page 1
28
29
30
32
33
34
35
Page 2
27
28
GROUND LIFT
29
31
LIFT
30
32
33
34
35
38
36
37
Introduction
Congratulations on purchasing the Gemini PS-525 PRO mixer. This state of
the art mixer includes the latest features and is backed by a three year
limited warranty, excluding crossfader and channel slides. Prior to use,
we suggest that you carefully read all the instructions.
inputs will accept only turntables with a magnetic cartridge. A
GROUND SCREW (38) 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
(22) jack.
Features
• Cut Feature for Bass, Mid and High for each channel
• 2 Stereo channels
• 2 Phono/Line Convertible, 2 Line and 1 Mic input
• 1/4" DJ Mic jack
• Low, Mid, High, Gain and Balance controls on each channel
• Punch In for each channel
• Master Output, Booth and Record outputs
• Dual mode display
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.
In the U.S.A., if you have any problems with this unit,
call 1-732-969-9000 for customer service. Do not return
equipment to your dealer.
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 (27) switch is set to the correct voltage.
NOTE: This product is double insulated and not intended
to be grounded.
2. Make sure that the POWER (21) switch is in the off position.
3. The PS-525 PRO is supplied with 3 sets of amp output jacks. The
MASTER OUTPUT (28) jacks are unbalanced and used to connect to
your main amplifier. The OUTPUT REC (30) jacks can be used to
connect the mixer to the record input of your recorder enabling you to
record your mix. The OUTPUT BOOTH (29) jacks allow you to hook up
an additional amplifier.
4. The DJ MIC (1) input (found on the front panel) accepts a 1/4"
connector and balanced and unbalanced microphones.
5. On the rear panel are 2 stereo PHONO/LINE (33, 35) inputs and 2
stereo LINE (32, 34) inputs. The PHONO/LINE SWITCHES (36, 37)
enable you to set the (33, 35) inputs to Phono or Line. The phono
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 (31) in the left
position).
2. Then turn the power off before moving the GROUND LIFT
SWITCH (31). 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 WA Y. 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 (21).
2. CHANNEL 1: The GAIN (8), HIGH (9), MID (10), and LOW (11) controls
allow you to fully adjust the selected source. Switch # (12) allows you
to select either the PHONO 1/LINE 1 (35) or the LINE 2 (34) input. The
CHANNEL SLIDE (13) controls the output level of this channel.
3. CHANNEL 2: The GAIN (8), HIGH (9), MID (10), and LOW (11) controls
allow you to fully adjust the selected source. Switch # (19) allows you
to select either the PHONO 2/LINE 3 (33) or the LINE 4 (32) input. The
CHANNEL SLIDE (20) controls the output level of this channel.
NOTE: There is Low, Mid and High equalization for each
channel with an extremely wide range of adjustment.
SUGGESTION: You can use the Cut Features on each channel to
remove Low, Mid and/or High to create special effects.
4. CROSSFADER SECTION: The CROSSF ADER (18) allows the mixing of
one source into another. The left side of the CROSSFADER (18) is
CHANNEL 1 and the right side is CHANNEL 2. The CROSSFADER
REVERSE SWITCH (17) allows you to reverse the crossfader so that
CHANNEL 2 is controlled by the left side of the crossfader and
CHANNEL 1 is controlled by the right side of the crossfader.
NOTE: When the CROSSFADER REVERSE SWITCH
(17) is activated (moved to the right), only the crossfader
reverses. The Channel Slides, Punch In, Gain, and tonal
controls do not reverse.
The CROSSFADER (18) in your unit is removable and if the need
arises can be easily replaced. Crossfader units are available in three
varieties. Part # RF-45 (which is identical to the crossfader supplied
with the mixer) has a 45 mm travel from side to side. Part # RF-30 is
available with a 30 mm travel distance. Also available is the PSF-45
with a special curve designed for scratch mixing. Just purchase one
of these crossfader units from your Gemini dealer and follow these
instructions:
Page 3
1. Unscrew the outside FADER PLATE SCREWS (B). Do not
touch the INSIDE SCREWS (C).
2. Carefully lift the fader and unplug the CABLE (D).
3. Plug the new fader into the cable and place it back in the
mixer.
4. Screw the fader to the mixer.
5. PUNCH IN: The PUNCH IN BUTTONS (14, 26) allow you to add a
channel’s signal to the mix when the crossfader is set to the opposite
channel.
6. OUTPUT CONTROL SECTION: The level of the MASTER OUTPUT (28)
is controlled by the MASTER (25) control. The BALANCE (24) control
will allow the MASTER OUTPUT signal to be balanced between the left
and right speakers. The BOOTH (23) control adjusts the level of the
BOOTH OUTPUT (29). HINT : The booth OUTPUT is used by some DJs
to run monitor speakers in their DJ booth. You can also use it as a
second ZONE or AMP output.
NOTE: The RECORD OUT (30) has no level control. The
level is set by the channel slides and the gain controls of
the selected channel. The tonal qualities are set by the
bass, treble and mid controls of that same channel.
7. TALKOVER SECTION: The purpose of the talkover section is to allow
the program playing to be muted so that the mic can be heard above
the music. The MIC/TALKOVER SWITCH (2) has three settings. When
the MIC/TALKOVER SWITCH (2) is in the bottom position, the mic and
talkover are both off. When the MIC/TALKOVER SWITCH (2) is in the
center position the mic is on, the MIC INDICATOR (3) will glow, but
talkover is off. When the MIC/TALKOVER SWITCH (2) is in the top
position, the mic and talkover will be on and the volume of all sources
except the Mic input are lowered by 16 dB. LEVEL (4) controls the
level of the MIC.
8. CUE SECTION: By connecting a set of headphones to the HEADPHONE
(22) jack, you can monitor either channel or both together. Select the
CHANNEL 1 by sliding the CUE SLIDER (16) control to the left or
CHANNEL 2 by sliding the CUE SLIDER (16) control to the right. Use
the CUE LEVEL (5) control to adjust the headphone volume without
effecting the overall mix. Use the CUE SPLIT (15) button to split the
signals from each channel so that CHANNEL 1 will be heard in one
earphone and CHANNEL 2 will be heard in the other earphone.
9. DISPLAY: The dual function DISPLAY (7) indicates either the MASTER
OUTPUT (28, 31) left and right levels or the CHANNEL 1 and
CHANNEL 2 input levels. You can choose the option you want by
pressing the DISPLAY (6) button.
NOTE: When the DISPLAY (7) is in the CHANNEL 1/
CHANNEL 2 display mode, by adjusting the individual
channel gain and tone controls, you can increase or
decrease the signal to match the other channels signal.
The channel slides and crossfader have no effect on the
display readings.
Specifications
INPUTS:
DJ Mic....................................................1.5mV 2Kohm balanced
Phono.........................................................................3mV 47Kohm
Line.......................................................................150 mV 27Kohm
OUTPUTS:
Amp/Booth......................................................0 dB 1V 400ohm
Max..............................24V Peak to Peak
Rec...........................................................................225mV 5Kohm
GENERAL:
Low (Channels 1 - 2)........................................................+ 12dB/-32 dB
Mid (Channels 1 - 2).........................................................+ 12dB/-32 dB
High (Channels 1 - 2).....................................................+ 12dB/-32 dB
Gain (Channels 1 - 2)...........................................................0 to -20dB
Frequency Response....................................20Hz - 20KHz +/- 2dB
Distortion................................................................................0.02%
S/N Ratio...............................................................better than 80dB
Talkover Attenuation..............................................................-16dB
Headphone Impedance.........................................................16ohm
Power Source.............................................115/230V 50/60Hz 10W
Dimensions.................10”w x 3.5”h x 14”d (254 x 89 x 305 mm)
Weight............................................................................6.6 lbs. (3 kg)
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