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Gemini BPM-1000 Mode D'emploi page 3

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Introduction
Congratulations on purchasing the Gemini BPM-1000 mixer. This state of the art
mixer includes the latest features and is backed by a three year warranty. Prior to
use, we suggest that you carefully read all the instructions.
Features
4 Stereo Channels
State of the Art Cue Section
1 Phono/Line Convertible, 2 Phono, 5 Line, and 3 Mic Inputs
Cut Feature for Low, Mid and High for each channel
Gain, High, Mid and Low tone controls for each channel
Talkover
Balanced and Unbalanced Master Outputs
Booth Output
Master Output Peak Hold LED Meters
Prefader Input Level Peak Hold LED Meters for each channel
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
(43) switch is set to the correct voltage.
NOTE
2. Make sure that the POWER (1) switch is in the off position. The POWER LED (2)
will be off.
3. The BPM-1000 is supplied with 2 sets of amp output jacks. The BALANCED
OUTPUT AMP (56) 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 (44) jacks are unbalanced and used to
connect to your main amplifier. The OUTPUT BOOTH (45) jacks allow you to
hook up an additional amplifier.
4. The MIC 1 (3) input (found on the front panel) accepts a 1/4" or XLR connector.
The MIC 2 (58) input and the MIC 3 (57) input (found on the rear panel) accept
1/4" connectors. All accept balanced and unbalanced microphones.
5. On the rear panel are 1 stereo PHONO/LINE (53) input, 2 stereo PHONO (49,
51) inputs, and 5 stereo LINE (46, 47, 48, 50, 52) inputs. The PHONO/LINE
SWITCH (55) enables you to set the (53) input to Phono or Line. The phono
inputs will accept only turntables with a magnetic cartridge. A GROUND SCREW
(54) 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 (13)
jack.
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 (59) in the bottom position).
2. Then turn the power off before moving the GROUND LIFT SWITCH (59). Lift
the ground by moving the GROUND LIFT SWITCH to the top position, 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). The power will turn on and the POWER LED (2)
will glow.
2. CHANNEL 1: The GAIN (14), HIGH (15), MID (16), and LOW (17) controls allow
you to fully adjust the selected source. Switch # (18) allows you to select the
PHONO 1/LINE 1 (53) or the LINE 2 (52) input. The CHANNEL SLIDE (19)
controls the input level of this channel.
3. CHANNEL 2: The GAIN (14), HIGH (15), MID (16), and LOW (17) controls allow
you to fully adjust the selected source. Switch # (21) allows you to select the
PHONO 2 (51) or the LINE 3 (50) input. The CHANNEL SLIDE (22) controls the
input level of this channel.
4. CHANNEL 3: The GAIN (14), HIGH (15), MID (16), and LOW (17) controls allow
you to fully adjust the selected source. Switch # (23) allows you to select the
PHONO 3 (49) or the LINE 4 (48) input. The CHANNEL SLIDE (24) controls the
input level of this channel.
5. CHANNEL 4: The GAIN (14), HIGH (15), MID (16), and LOW (17) controls allow
you to fully adjust the selected source. Switch # (25) allows you to select the
LINE 5 (47), LINE 6 (46) or the MIC 3 (57) input. The CHANNEL SLIDE (26)
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 (27) allows the mixing of one
source into another. The BPM-1000 features an assignable crossfader. The
ASSIGN (28, 31) switches allow you to select which channel will play through
each side of the crossfader. The ASSIGN (28) 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 (31) 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 (29, 32) buttons for the crossfader. When the OFF (29) button is
pressed, the left side of the crossfader will be inactive and the OFF LED (30) will
light. When the OFF (32) button is pressed, the right side of the crossfader will be
inactive and the OFF LED (33) will light. Using the OFF button, be sure to
deactivate the crossfader before changing the ASSIGN setting. This will avoid any
click or popping sound in your signal while you are changing the assign setting.
The CROSSFADER (27) 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:
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