Samson MPL 1640 - Manual (Page 29)

27
Applications
Application 4 - Using the MPL 1640 as a recording mixer
You can also use the MPL 1640 as a recording mixer when making simple recordings (for example, when recording a
rehearsal or practice session direct to open-reel two-track, cassette, or DAT recorder). Microphones and line level
signals are connected to various channel inputs. Signal processors are connected to Aux sends and returns and to
channel inserts as required. A submix from Aux send 1 is connected to the input of a headphone amplifier driving cue
headphones so that performers can receive a headphone mix independent of the main control room mix. Finally, the
Main Mix outputs are connected to the inputs of a two-track or DAT recorder, with the outputs of the two-track or DAT
recorder connected to channels 15 and 16. These two channels are routed to Bus 3/4 (by pressing in their Bus
switches), and the Bus 3/4 outputs are connected to a power amplifier driving the control room speakers. The Main Mix
inserts are connected to a dynamics processor (compressor/limiter) in order to automatically limit the mixed signal going
to tape, while the Bus 3/4 inserts are connected to a graphic equalizer in order to “tune” the control room so as to provide
accurate frequency response. In this setup, the Main L/R faders control the signal level going to tape, while the Bus 3/4
level knob controls the playback volume (you’ll want to set the tape recorder to monitor input signal while recording).
One significant advantage of using this kind of setup is that it allows you to continuously monitor the signal arriving at the
two-track tape recorder, as opposed to simply monitoring the signals arriving at the MPL 1640 inputs.
1 2
3
1 2
3
1 2
3
1 2
3
1 2
3
CH 1 CH 2 CH 3 CH 4 CH 5
CH 1 CH 2 CH 3 CH 4 CH 5 CH 6 CH 7 CH 8 CH 9 CH 10 CH 11 CH 12 CH 13 CH 14 CH 15 CH 16
ON
OFF
1 2
3
CH 6
1 2
3
CH 7
1 2
3
CH 8
1 2
3
CH 9
1 2
3
CH 10 CH 11 CH 12 CH 13 CH 14 CH 15 CH 16
115
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
ON
OFF
~115V /230V
50/60Hz 42W
MAIN MIX OUT
(BALANCED 600 Ω + 4dB)
P
O W E
R
PHANTOM
SERIAL
NUMBER
AVIS:
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR.
DO NOT EXPOSE THIS EQUIPMENT
TO RAIN OR MOISTURE.
XLR
1 GND
2 +
3 -
MPL 1640 16 CHANNEL
AUDIO MIXER
TIP RING SLEEVE
TIP +
RING -
SLEEVE GND ASSEMBLED IN R.O.K. SAMSON TECHNOLOGIES CORP., NEW YORK, U.S.A.
SAMSON
L
CHANNEL INSERT (TIP RETURN - RING SEND)
AUX 1 AUX 2 3L - 4R MAIN MIX
R
L
AUX 3
AUX 3 AUX 2 AUX 1
AUX RETURN (UNBAL.2K Ω + 4dB)
R R R L L L
(BALANCED - 50dB TO + 4dB) MIC INPUT
R
3L - 4R(UNBAL.2K Ω +4dB)
BUSS INSERT AUX OUT (UNBAL.2K Ω +4dB) LINE INPUT (BALANCED 10 K Ω - 40dB TO + 4dB)
SIGNAL PROCESSOR SIGNAL PROCESSOR
MIDI TONE GENERATOR
SERVO - 240 SAMSON
STEREO AMPLIFIER
DAT
COMPRESSOR / LIMITER
Q5 HEADPHONE AMPLIFIER
Q5
20Hz 25Hz 31.5Hz 40Hz 50Hz 63Hz 80Hz 100Hz 125Hz 160Hz 200Hz 250Hz 315Hz 400Hz 500Hz 630Hz 800Hz 1Khz 1.25Khz 1.6Khz 2Khz 2.5Khz 3.15Khz 4Khz 5Khz 6.3Khz 8Khz 10Khz 12.5Khz 16Khz 20Khz
20Khz 16Khz 12.5Khz 10Khz 8Khz 6.3Khz 5Khz 4Khz 3.15Khz 2.5Khz 2Khz 1.6Khz 1.25Khz 1Khz 800Hz 630Hz 500Hz 400Hz 315Hz 250Hz 200Hz 160Hz 125Hz 100Hz 80Hz 63Hz 50Hz 40Hz 31.5Hz 25Hz 20Hz
+15db
0
-15db
0
+15db
-15db -15db
+15db
0
+15db
-15db
0
SAMSON 1/3 OCTAVE DUAL 31 BAND GRAPHIC EQUALIZER E62
POWER
BYPASS
BYPASS
PEAK
PEAK
GRAPHIC EQUALIZER