Samson MPL 1640 User Manual
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.
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 -
2 +
3 -
MPL 1640
16 CHANNEL
AUDIO MIXER
TIP RING SLEEVE
TIP +
RING -
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