Gemini BPM1000 User Manual

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LIFT

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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

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.

• 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

• T alkover

• 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. T o 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 1-732-738-9003 for customer service. Do not return equipment
to your dealer.

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: This product is double insulated and not intended to be
grounded.

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.

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: There is Low, Mid and High equalization for each channel
with an extremely wide range of adjustment providing a smoother
mix.

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 CROSSF ADER (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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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.

7. BPM DISPLAY: There are BPM DISPLA YS (34, 35) for the two channels
assigned to each side of the CROSSFADER (27). They update approximately
every 2.5 seconds and digitally display the Beats Per Minute allowing you to
match the beats visually. BPM DISPLAY (34) reflects the Beats Per Minute of the
channel assigned to the left side of the CROSSFADER, and BPM DISPLAY (35)
reflects the Beats Per Minute of the channel assigned to the right side of the
CROSSFADER.

NOTE: A [- -] reading will appear on the BPM DISPLAY if the track
has unclear beats. The [- -] reading will also appear if there is no
signal present.

8. The BEA T OFFSET INDICATORS (36) light when the tracks of the two channels
assigned to the crossfader are within 11 BPMs of each other and display how
aligned the beats of the two channels are. When the RED LEDs light, the beats
are not aligned. When the YELLOW LEDs light, the beats are almost aligned.
When the GREEN LED lights, the beats are aligned perfectly.

NOTE: If the diffence between the two channels beats exceed 11
BPM, the BEAT OFFSET INDICATORS will not light.

SUGGESTION: You can use the BPM DISPLA YS to determine which tracks
have similar or the same Beats Per Minute. When mixing two tracks with
similar Beats Per Minute, you can use one source’s pitch control to align the
Beats Per Minute with the other source’s BPM. The BPM DISPLAYS and the
BEAT OFFSET INDICATORS update every 2.5 seconds and will reflect the
change in BPM and indicate when the beats are aligned.

NOTE: Beat mixing is a skill that requires practice. Not every track
has a strong beat, and beat mixing works best with tracks with
clear and strong beats.

9. OUTPUT CONTROL SECTION: The level of the AMP OUT (44, 56) is controlled
by the MASTER (41) slide and the BALANCE CONTROL (40). The BOOTH (42)
control adjusts the level of the BOOTH OUTPUT (45). HINT : The booth OUTPUT
is used by some DJs to run monitor speakers in their DJ booth. Y ou can also use
it as a second ZONE or AMP output. Activating the MONO (39) button (the mono
LED will light) makes the master output mono.

10. 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 (9) switch controls MIC 1 and MIC 2 and has three settings.
When the MIC/TALKOVER (9) switch is in the left position, MIC 1 and MIC 2 and
talkover are off. When the MIC/TALKOVER (9) switch is in the center position
MIC 1 and MIC 2 are on, the MIC INDICATOR (8) will glow, but talkover is of f.
When the MIC/TALKOVER (9) switch is in the right position, MIC 1 and MIC 2
and talkover will be on and the volume of all sources except the Mic inputs are
lowered by 16 dB. The TREBLE (4) and BASS (5) controls allow you to fully
adjust the tone of MIC 1 and MIC 2. MIC 1 LEVEL (7) controls the level of MIC 1.
The MIC 2 LEVEL (6) controls the level of MIC 2.

1 1. CUE SECTION: By connecting a set of headphones to the HEADPHONE (13)

jack, you can monitor any or all of the channels. Press the CUE ASSIGN (20)
buttons for channels 1 - 4 to select the channel or channels to be monitored and
their respective LED indicators will glow. Use the CUE LEVEL (10) control to
adjust the cue volume without effecting the overall mix. By rotating the CUE PGM
PAN (12) control to the left you will be able to monitor the assigned cue signal.
Rotating to the right will monitor the PGM (program) output. Use the CUE SPLIT
(11) button to split the signals from cue and program so that cue will be heard in
one earphone and program will be heard in the other earphone.

12. DISPLAYS: The PEAK HOLD LED METER (37) indicates the MASTER
OUTPUT (44, 56) left and right channel levels. The individual channels each
have their own PREFADER INPUT LEVEL PEAK HOLD LED METERS (38)
which reflect the GAIN (14), HIGH (15), MID (16), and LOW (17) rotary control
adjustments. The CHANNNEL SLIDES (19, 22, 24, 26) will not effect the

PREFADER INPUT LEVEL PEAK HOLD LED METERS (38).

Specifications

INPUTS:

Phono...............................................................................................3mV 47Kohm

Line.............................................................................................150 mV 27Kohm

OUTPUTS:

Amp/Booth............................................................................0 dB 1V 400ohm

Max..............................20V Peak to Peak

Rec.................................................................................................225mV 5Kohm

MIC 1 & MIC 2:

DJ Mic..........................................................................1.5mV 2Kohm balanced

Bass............................................................................................................± 12dB

High.............................................................................................................± 12dB

MIC 3:

DJ Mic..........................................................................1.5mV 2Kohm balanced

Controls.................................................................................................Channel 4

GENERAL:

Bass (Chnls 1-4).............................................................................+ 12dB/- 26 dB

Mid (Chnls 1-4)................................................................................+ 12dB/- 26 dB

Treble (Chnls 1-4)...........................................................................+ 12dB/- 26 dB

Gain (Chnls 1-4)....................................................................................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.................................................................12.5”w x 3”h x 14”d

Weight..............................................................................................10 lbs

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