This symbol is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of electric
shock to persons.
This symbol is intended to alert the user to the
presence of important operation and maintenance (servicing) instructions in the literature
accompanying the appliance.
WARNING !
TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK.
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
Australian Monitor
INSTALLATION SERIES
2
Caution:
To prevent electric shock do not use this (polarized) plug
with an extension cord, receptacle or other outlet unless
the blades can be fully inserted to prevent blade exposure.
To prevent electric shock, match wide blade of plug to
wide slot, fully insert.
Page 3
CONTENTS
Page
1. Introduction4
2. Front Panel5
3. Back Panel6
4. Internal Adjustment7
5. Block Diagram9
6. Dimensions10
7. Specifications11
3
Australian Monitor
INSTALLATION SERIES
Page 4
1. INTRODUCTION
The Australian Monitor Installation Series AMIS26 is a high quality 2 input, 6 output distribution
amplifier. The AMIS26's 2 inputs can be balanced or unbalanced and each input's sensitivity
can be switched between Mic and Line level. 24 VDC Phantom power is individually
switchable per input and for ease of setup, a four segment LED level meter is provided per
input. Each of the AMIS26's inputs is individually assignable to any of the 6 outputs via front
panel DIP switches. Outputs can be balanced or unbalanced and feature up to 30dB of
attenuation, so they can be run as any combination of line level or mic level outputs. Ample
label space is provided for both inputs and outputs and the AMIS26 is powered via a supplied
24VDC power supply. The AMIS26 provides a low noise, feature packed, signal routing
solution to cover a wide range of installation needs at a contractor friendly price.
Australian Monitor
INSTALLATION SERIES
4
Page 5
2. FRONT PANEL
0dB0dB
-15dB-15dB+15dB+15dB
AB
INPUT
+10dB
0dB
-10dB
OFFOFFOFFOFFOFFOFF
-20dB
AB
OFFOFFOFFOFFOFFOFF0dB0dB0dB0dB0dB0dB
AAAAAABBBBBB
OUTPUT 1OUTPUT 2OUTPUT 3OUTPUT 4OUTPUT 5OUTPUT 6
Expanded view
INSTALLATION SERIES
ON
AMIS26
3
12
4
3a
3b
1. INPUT LEVEL CONTROL(S)
The input level controls are screwdriver adjustable trim pots. The input level controls can
boost or cut the input signal by up to 15dB.
2. LEVEL METER
These 4 segment LED meters show the strength of each of the AMIS26's input signals. LED
segments are calibrated to the following level markings and show the following colours:
-20dBu (green)
!
-10dBu (green)
!
0dBu (yellow)
!
+10dBu (red)
!
3. OUTPUT SECTION
3a. OUTPUT LEVEL CONTROLS
The output level controls are screwdriver adjustable trim pots. These level controls
attenuate the output level, with a range from -60dB at 'Minimum” position to 0dB at
“Maximum” position.
3b. INPUT ASSIGN SWITCHES
These recessed DIP switches assign input A and input B to a desired output.
4. POWER LED
This blue LED indicates the unit is powered “on”.
5
Australian Monitor
INSTALLATION SERIES
Page 6
3. BACK PANEL
DC INPUT
EARTH
+24VDC
XLR
1 = Ground
2 = + Signal
3 = - Signal
ENGINEERED BYAUDIO TELEX COMMUNICATIONS PTY LTD IN SYDNEY,AUSTRALIA
4
OUTPUT 6OUTPUT 5OUTPUT 4OUTPUT 3OUTPUT 2OUTPUT 1
+ve
3
PIN 2
HOT
+
PIN 3
COLD
RCA& XLR OUTPUTS ARE INTERNALLY SWITCHABLE BETWEEN MIC/LINE LEVEL
PIN 1
PIN 1
GND
GND
-
FEMALE XLR
MALE XLR
PIN 2
HOT
+
PIN 3
COLD
-
INPUT BINPUTA
RCAINPUTS ARE LINE LEVEL
XLR INPUTSARE INTERNALLY SWITCHABLE BETWEEN MIC/LINE LEVEL
12
1. INPUT A/B CONNECTORS
The balanced XLR inputs can be used as Mic or Line level inputs and are switched
between input sensitivities via internal DIP switches accessed through the lid (see internal
adjustments section page 7). The dual RCA inputs are Line level inputs only and are
internally summed to mono.
2. OUTPUT CONNECTORS
The AMIS26's outputs can be either balanced XLR or unbalanced dual RCA's. Both these
outputs can be switched between Mic level & Line level via internal DIP switches accessed
through the lid (see internal adjustments section page 7).
3. 24VDC POWER CONNECTOR
This 2.1mm connector accepts power from the provided 24VDC power supply.
4. EARTH Stud
In some circumstances it may be necessary to ground the unit to eliminate noise in the
system. This can be done by using this earth stud.
NOTE: This stud provides a connection to chassis ground. Audio ground is internally
tied to chassis ground.
Australian Monitor
INSTALLATION SERIES
6
Page 7
4. INTERNAL ADJUSTMENT
NOTE:The following adjustments involve access to the inside of the AMIS26 and should
only be attempted by a qualified technician. All internal adjustments are
accessible through the lid of the AMIS26. Always turn off the DC power and
remove the DCpower cord before accessing the insideof the AMIS26.
ON
123
DIP 1
Input 1
Line Level - Switch 1, 2 OFF
Mic Level - Switch 1, 2 ON
Phantom Power (24V)
Switch 3 ON/OFF
ON
123
DIP 3
Input 2
Line Level - Switch 1, 2 OFF
Mic Level - Switch 1, 2 ON
Phantom Power (24V)
Switch 3 ON/OFF
1
ON
123
DIP 1
Input 1
Line Level - Switch 1, 2 OFF
Mic Level - Switch 1, 2 ON
Phantom Power (24V)
Switch 3 ON/OFF
ON
12
DIP 2DIP 4DIP 5
Line Level Output 1 - Switch 1 OFF
Mic Level Output 1 - Switch 1 ON
Line Level Output 2 - Switch 2 OFF
Mic Level Output 2 - Switch 2 ON
1.Input Sensitivity DIP Switches.
2
DIP1 (INPUT A), DIP3 (INPUT B)
ON
12
Line Level Output 3 - Switch 1 OFF
Mic Level Output 3 - Switch 1 ON
Line Level Output 4 - Switch 2 OFF
Mic Level Output 4 - Switch 2 ON
Switches 1, 2
Switches 1 and 2 on this 3 pole DIP switch when
selected to the “on” position will switch the
balanced XLR input to Mic level. The “off” position
will switch the balanced XLR input to Line level. The
Default setting is Line level.
NOTE: This switch does not effect the sensitivity of
the unbalanced dual RCA input.
2.Phantom Power Switch.
DIP1 (INPUT A), DIP3 (INPUT B)
Switch 3
This switch will enable 24VDC phantom power to
the desired input. The default setting is “off”.
ON
12
Line Level Output 5 - Switch 1 OFF
Mic Level Output 5 - Switch 1 ON
Line Level Output 6 - Switch 2 OFF
Mic Level Output 6 - Switch 2 ON
NOTE: Before switching Phantom power on please ensure that no line level source