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Applications
Here are four suggested applications for the MPL 1204; bear in mind that your particular circumstance may dictate
changes in these suggested signal connections and routings.
Application 1 - Using The MPL 1204 As A Recording Mixer
The MPL 1204 is optimized for use as a recording mixer with multitrack digital or analog recorders. As shown in the
illustration below, 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, with Aux send 1 (which is pre-fader) driving a
headphone amplifier for cue mixes. The Control Room outputs are connected to a power amplifier driving studio
monitors. The Main 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 the MPL 1204 tape inputs. The four Bus outputs are connected to the inputs of a
multitrack recorder, with the multitrack outputs connected to four MPL 1204 channel line inputs. During mixdown, those
channels carrying the multitrack outputs are routed to bus 1/2 (via their channel “Mute 3/4” switches), with buses 1 and 2
routed to the Main L/R outputs (by pressing in their Bus “L/R” switches). To listen back to the mix, the channels carrying
the two-track outputs (channels 11 and 12) are routed to bus 3/4 (via their channel “Mute 3/4” switch); then connect
buses 3 and 4 to the Control Room outputs by pressing in their Bus “L/R” switches.
CASSETTE or DAT
+15db
0
-15db
0
+15db
-15db
-15db
+15db
0
+15db
-15db
0
SAMSON
SIGNAL PROCESSOR
SIGNAL PROCESSOR
S
E
R
V
O
-
2
4
0
SAMSON
L
R
MIDI KEYBOARD
L
R
DRUM MACHINE
MIDI TONE GENERATOR
L
R
MULTITRACK
Ring
Tip
MPL 1204 12 CHANNEL MIC MIXER
1/23/4
1
AUX RETURNS
STEREO INPUTS
UNBALANCED 10KΩ +4dBu
S / N
AVIS;
RISQUE DE CHOC ELECTRIQUE
NE PAS OUVRIR
DO NOT EXPOSE THIS EQUIPMENT
TO RAIN OR MOISTURE.
ON
OFF
~AC INPUT
115V/230V
50/60Hz, 25W
SAMSON
TRS
STEREO INPUT
TIP = LEFT
RING = RIGHT
SLEEVE = COM
TRS
BALANCED
TIP = HI
RING = LO
SLEEVE = COM
TRS INSERT
UNBALANCED
TIP = RETURN
RING = SEND
SLEEVE = COM
XLR
BALANCED
3 = LO
2 = HI
1 = COM
FUSE
1A/250V[115V]
0.5A/250V[230V]
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
!
115V/230 - 50/60 Hz 25W
POWER
RATING
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
2
AUX SENDS
UNBALANCED <75Ω +4dBu
TAPE IN
UNBALANCED
10KΩ -10dBu
12
11
10987654321
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
1
1
2
2
3
3
MICROPHONE INPUTS BALANCED +4dBu TO -50dBu
LINE INPUTS BALANCED +24dBu TO -30dBu
CHANNEL INSERTS TIP RETURN -RING SEND -SLEEVE GND
BUS INSERTS
UNBALANCED 75Ω +4dBu
MIXER LINKING
4123
BUS OUTPUTS
UNBALANCED 75Ω +4dBu
4123
CONTROL ROOM
BALANCED <75Ω +4dBu
RIGHT LEFT
1
2
3
1
2
3
MAIN
BALANCED <75Ω +4dBu
POWER
L/11
R/12
RIGHT
LEFT
HEADPHONE AMP