Advanced connections, External audio processing cascading amplifiers, Remove jumper – Staub Electronics ECA-70MIXAMP-1-120 - EPISODE - 120 WATT RACK MOUNTABLE 70 VOLT COMMERCIAL AMPLIFIER-MIXER User Manual
Page 10: External processor (eq), Source 4 rec pre out amp in, Batt supply, Source 3 source 2 source 1, 24v 8a, Gain, On off 2t 4t
ECA-70MIXAMP-1-120 Installation Manual
pg. 10
Advanced Connections
External Audio Processing
Cascading Amplifiers
The ECA-70MIXAMP-1-120 allows for external audio processing to equalize the output to suit the installed environment. This is
achieved by using the unbalanced Pre Out and Amp In connections.
Multiple ECA-70MIXAMP-1-120 can be used in a system where more audio distribution is needed. This is achieved by using the
unbalanced Rec Line Out to send the signal from Amp1 to the additional amplifiers.
1. Remove the jumper between the Pre Out and Amp In Connections.
2. Connect the Pre Out to the input of the external processor.
3. Connect the output of the external processor to the Amp In connection.
4. Adjust the master volume to the 12 o’ clock position; this will provide an output level in the middle of the volume range.
5. Calibrate the external processor following the instructions provided with that device.
1. Connect the Rec Line Out of Amp1 to a Source on Amp2.
2. Set the gain for the source used to Max, allowing for the volume from Amp1 mics/sources to be at the highest level.
3. Repeat for additional amplifiers.
4. Adjust the tone of Amp1 and then adjust the additional amps in order (Amp1, Amp2, etc.).
Note: This connection is affected by Master Volume, Bass and Treble Controls., keep this in mind when calibrating the external processor.
Note: The Rec Line Out is affected by Bass and Treble controls; adjust the tone of Amp1 first and then adjust the tone of the additional amplifiers.
Remove Jumper
External Processor (EQ)
1
2
3
1
2
3
1
2
3
1
2
3
INPUT~120V 60Hz 160W
Fuse:T6.3A L 250V
SOURCE 4
REC
PRE OUT
AMP IN
PHANTOM MIC
PHANTOM MIC
PHANTOM MIC
PHANTOM MIC
CHIME
BATT SUPPLY
Serial Number
SOURCE 3
SOURCE 2
SOURCE 1
Engineered in the U.S.A
Manufactured in China
24V
8A
Mixer Amplif i e
GAIN
MIC 1
GAIN
MIC 2
GAIN
MIC 3
GAIN
MIC 4
OFF
OFF
OFF
OFF
ON
ON
ON
ON
+48V
+48V
+48V
+48V
MIC PRIORITY
ON
OFF
2T
4T
CHIME
CHIME
VOLUME
XLR BAL
1-GND
2-HOT+
3-COLD-
INPUTS
PRE OUT
10
0V
70
V
50
V
CO
M
4
POWER OUT
Class 2 Wiring
120W
Commercial Amplif i er/ Mixe
4VG8
E330247
BALANCED
REC OUT
1
2
3
1
2
3
1
2
3
1
2
3
INPUT~120V 60Hz 160W
Fuse:T6.3A L 250V
SOURCE 4
REC
PRE OUT
AMP IN
PHANTOM MIC
PHANTOM MIC
PHANTOM MIC
PHANTOM MIC
CHIME
BATT SUPPLY
Serial Number
SOURCE 3
SOURCE 2
SOURCE 1
Engineered in the U.S.A
Manufactured in China
24V
8A
Mixer Amplif i e
GAIN
MIC 1
GAIN
MIC 2
GAIN
MIC 3
GAIN
MIC 4
OFF
OFF
OFF
OFF
ON
ON
ON
ON
+48V
+48V
+48V
+48V
MIC PRIORITY
ON
OFF
2T
4T
CHIME
CHIME
VOLUME
XLR BAL
1-GND
2-HOT+
3-COLD-
INPUTS
PRE OUT
10
0V
70
V
50
V
CO
M
4
POWER OUT
Class 2 Wiring
120W
Commercial Amplif i er/ Mixe
4VG8
E330247
BALANCED
REC OUT
ECA-70MIXAMP-1-120