Gemini BPM-500, Service Manual, Page: 5 / 12

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7. BPM DISPLAY: There are BPM DISPLAYS (24, 27) for the two
channels assigned to each side of the CROSSFADER (26) . They
update approximately every beat and digitally display the Beats Per
Minute allowing you to match the beats visually.
BPM DISPLAY (24)
reflects the Beats Per Minute of the channel assigned to the left side of
the
CROSSFADER , and BPM DISPLAY (27) reflects the Beats Per
Minute of the channel assigned to the right side of the CROSSFADER .
NO NO NO NO NOTE TE TE TE TE: 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 BEAT OFFSET INDICATORS (25) 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.
NO NO
NO NO NOTE
TE
TE TE TE: 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 DISPLAYS 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 beat and
will reflect the change in BPM and indicate when the beats are aligned.
NO NO NO NO NOTE TE TE TE TE: 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. LOOP SECTION: Removing the jumpers from the LOOP OUTPUT (49)
and LOOP INPUT (50) jacks will activate the loop. Any device
connected between the LOOP OUTPUT (49) and LOOP INPUT (50)
jacks will be inserted into the signal path.
10. OUTPUT CONTROL SECTION: The level of the MAIN OUT (45, 46) is
controlled by the MASTER (35) slide. Activating the MONO (33) button
(the mono LED will light) makes the overall output mono. The BOOTH
(36) control adjusts the level of the BOOTH OUTPUT (47). 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.
NO NO
NO NO
NOTE TE
TE TE
TE: The RECORD OUT (48) RECORD OUT (48)
RECORD OUT (48) RECORD OUT (48)
RECORD OUT (48) 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 low, mid
and high controls of that same channel.
11. 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 (7) controls MIC 1 and MIC
2 and has three settings. When the MIC/TALKOVER SWITCH (7) is in
the bottom position, MIC 1 and MIC 2 and talkover are off. When the
MIC/TALKOVER SWITCH (7) is in the center position MIC 1 and MIC 2
are on, the MIC INDICATOR (6) will glow, but talkover is off. When the
MIC/TALKOVER SWITCH (7) is in the top position, MIC 1 and MIC 2
and talkover will be on and the volume of all sources except the MIC 1
and MIC 2 inputs are lowered by 16 dB. The
TREBLE (2) and BASS
(3) controls allow you to fully adjust the tone of MIC 1 and MIC 2. MIC
1 LEVEL (5) controls the level of MIC 1. The MIC 2 LEVEL (4) controls
the level of MIC 2.
12. CUE SECTION: By connecting a set of headphones to the
HEADPHONE (43) 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 (40) control to adjust the cue
volume without effecting the overall mix. By moving the CUE PGM PAN
(42) control to the left you will be able to monitor the assigned cue
signal. Moving the control to the right will monitor the PGM (program)
output. Use the
CUE SPLIT (41) 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.
13. DISPLAY: The peak hold, dual function DISPLAY (31) indicates either
the MASTER (45, 46) output left and right levels OR the the selected
cue and program (premaster output) levels. You can choose the option
you want by pressing the
DISPLAY (32) button.
NO NO
NO NO
NOTE TE
TE TE
TE: When the DISPLA DISPLA
DISPLA DISPLA
DISPLAY (31) Y (31)
Y (31) Y (31)
Y (31) is in the cue/program mode,
by adjusting GAIN (8) GAIN (8) GAIN (8) GAIN (8) GAIN (8), you can increase or decrease the
signal to match the other channel’s signal.
Specifications
INPUTS:
DJ Mic....................................................1.5mV 2Kohm balanced
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/- 32 dB
Mid (Chnls 1-4)..................................................................+ 12dB/- 32 dB
Treble (Chnls 1-4)..............................................................+ 12dB/- 32 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 20W
Dimensions..........................................................19”w x 4”h x 9”d
Weight........................................................................10.2 lbs