User Manual

ECA-70MIXAMP-1-120 Installation Manual
pg. 10
Advanced Connections
External Audio Processing
Cascading Ampliers
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 ampliers.
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 ampliers.
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 rst and then adjust the tone of the additional ampliers.
Remove Jumper
External Processor (EQ)
12
3
12
3
12
3
12
3
INPUT~120V 60Hz 160W
Fuse:T6.3A L 250V
SOURCE4 REC PRE OUT
AMP IN
PHANTOM MIC PHANTOM MIC PHANTOM MIC PHANTOM MIC
CHIME
BATTSUPPLY
Serial Number
SOURCE3 SOURCE 2 SOURCE1
Engineered in the U.S.A
Manufactured in China
24V
8A
MixerAmplif i e
GAIN
MIC 1
GAIN
MIC 2
GAIN
MIC 3
GAIN
MIC 4
OFF OFF OFF OFFON ON ON ON
+48V +48V +48V +48V
MIC PRIORITY
ON
OFF
2T
4T
CHIME
CHIME
VOLUME
XLRBAL
1-GND
2-HOT+
3-COLD-
INPUTS PREOUT
100V
70V
50V
COM
4
POWEROUT
Class2 Wiring
120W
CommercialAmplif i er/ Mi x e
4VG8
E330247
BALANCED
REC OUT
12
3
12
3
12
3
12
3
INPUT~120V 60Hz 160W
Fuse:T6.3A L 250V
SOURCE4 REC PRE OUT
AMP IN
PHANTOM MIC PHANTOM MIC PHANTOM MIC PHANTOM MIC
CHIME
BATTSUPPLY
Serial Number
SOURCE3 SOURCE 2 SOURCE1
Engineered in the U.S.A
Manufactured in China
24V
8A
MixerAmplif i e
GAIN
MIC 1
GAIN
MIC 2
GAIN
MIC 3
GAIN
MIC 4
OFF OFF OFF OFFON ON ON ON
+48V +48V +48V +48V
MIC PRIORITY
ON
OFF
2T
4T
CHIME
CHIME
VOLUME
XLRBAL
1-GND
2-HOT+
3-COLD-
INPUTS PREOUT
100V
70V
50V
COM
4
POWEROUT
Class2 Wiring
120W
CommercialAmplif i er/ Mi x e
4VG8
E330247
BALANCED
REC OUT
ECA-70MIXAMP-1-120