Zenitel VINGTOR STENTOFON EA1400 User manual

EA1400 / EA1600
Analog Class-D Amplifier
Installation and User Manual
A100K11939

Contents
1Introduction ......................................................................................................... 3
1.1. Document Scope ...................................................................................................................3
1.2. Product Information................................................................................................................3
1.3. Publication Log ......................................................................................................................3
1.4. Rules & Regulations ..............................................................................................................3
2Connectors and Controls.................................................................................... 4
2.1. Cabinet ......................................................................................................................................4
2.2. Power ........................................................................................................................................4
2.3. Audio Input ................................................................................................................................5
2.4. Audio Control ............................................................................................................................5
2.5. Loudspeaker Outputs ................................................................................................................6
2.6. Fault Relay ................................................................................................................................6
2.7. Settings Switch..........................................................................................................................7
2.8. Control In/Out (optional)............................................................................................................7
2.9. Indicators...................................................................................................................................8
3Installation & Wiring............................................................................................ 9
3.1. Unpacking .................................................................................................................................9
3.2. Mounting....................................................................................................................................9
3.3. Cable Layout .............................................................................................................................9
3.4. Mains Power and Grounding.....................................................................................................9
3.5. Input Connection .......................................................................................................................10
3.6. Loudspeaker Connections ........................................................................................................11
3.7. Practical Usage with Calculation Example................................................................................11
3.8. Optional Connections................................................................................................................12
4Startup & System Check ..................................................................................... 14
4.1. Preparations ..............................................................................................................................14
4.2. Sound ........................................................................................................................................14
4.3. Setting Maximum Output Voltage and Power Using a 1 kHz Source .......................................14
4.4. Line Monitoring..........................................................................................................................14
5Service ................................................................................................................. 15
5.1. Service Information ...................................................................................................................15
5.2. Fuse Replacement ....................................................................................................................15
6EA1400 / EA1600 Dimensions............................................................................. 16

A100K11939 EA1400/EA1600 Installation & User Manual 3
1 Introduction
1.1. Document Scope
This document is intended to provide relevant information on the amplifier features, typical configuration,
basic installation and wiring of the EA1400 and EA1600 amplifier. See product datasheet for technical
details.
1.2. Product Information
Item No.
Item Name
Description
1023121400
EA1400
Exigo Amplifier 1 x 400W
1023131600
EA1600
Exigo Amplifier 1 x 600W
1.3. Publication Log
Revision
Date
Author
Status/Comments
1.0
6.3.2020
LK/HKL
Published
1.1
24.8.2020
LK/HKL
Revised Rear Panel, Settings Switch,
Optional Connections
1.4. Rules & Regulations
The EA1400 & EA1600 amplifier and its components have been tested according to the following
regulation:
EN 60945: Fourth edition, 2002
"Maritime navigation and radio communication equipment and systems - General requirements - Methods
of testing and required test results".

4 EA1400/1600 Installation & User Manual A100K11939
2 Connectors and Controls
Figure 1: Amplifier Front Panel
Figure 2: Amplifier Rear Panel
2.1. Cabinet
The amplifier is prepared for mounting in a standard 19” rack and will occupy 2HU in height. The amplifier
can also be free-standing on a level, open surface. The amplifier has a built-in cooling fan but the front and
back must be kept free of objects in order to secure sufficient air flow.
2.2. Power
The amplifier is powered by 100-240 VAC 50/60 Hz mains. There is a mains circuit breaker on the cabinet
rear side, and a mains fuse on the Main Board inside the cabinet. The fuse value is 8A. The amplifier must
be grounded with the main cable, or with a 2.5 mm2wire between the amplifier’s ground terminal and a
proven good PE grounding point.

A100K11939 EA1400/EA1600 Installation & User Manual 5
2.3. Audio Input
This connector is used as a line input and output with a 6-pin Phoenix MiniCombi connector:
Pin#1 & Pin#2: Balanced Line IN audio input for public announcements, alarm messages,
background music, etc.
Pin#3: Line IN audio cable shielding; connected to chassis ground.
Pin#4 & Pin#5: Balanced Line OUT for output daisy chaining of audio signal. It is dependent on the
source impedance how many amplifiers can be driven with the same audio signal. Using a low
impedance source, it is possible to drive 5 amplifiers or more with this daisy-chain method.
Pin#6: Line OUT audio cable shielding; connected to chassis ground.
For more information and application example, please refer to section 3.5. Input Connection.
2.4. Audio Control
Volume adjustment can be done through the potentiometers for Volume, Bass, and Treble.
If the Volume potentiometer is set to the mid-point position and 1Vrms/1kHz is used as input
signal, 100Vrms should be measured on the “100V” loudspeaker output.
For Volume, the control range is between -14dB and +6dB.
For Bass and Treble, the control range is between 0dB and -10dB.

6 EA1400/1600 Installation & User Manual A100K11939
2.5. Loudspeaker Outputs
The loudspeaker outputs have a 3-pin Phoenix 5.08 mm connector:
Speaker Loop: full power output available on the 100V or 70V constant voltage line
Max. cable cross section: 12 AWG / 2.5 mm2
For more information and application example, please refer to section 3.6. Loudspeaker Connections.
2.6. Fault Relay
Fault Relay: NO/NC contacts of a built-in relay is available for remote warning devices. The relay is
activated during various fault conditions such as shorted speaker lines, ground fault,
overtemperature or overload on audio output.
For more information and application example, please refer to section 3.8. Optional Connections.

A100K11939 EA1400/EA1600 Installation & User Manual 7
2.7. Settings Switch
Line-In 10kΩ/600Ω
ON: 10kΩ as line input impedance is selected. This is the default setting.
OFF: 600Ωas line input impedance is selected.
Line Monitoring
ON: Line monitoring enabled A 21-kHz pilot tone signal (not hearable) will be delivered to the
outputs continuously to detect short circuit or ground fault events on the audio outputs lines. Its
amplitude is between 6V..10Vrms on the outputs, depending on the load. (No load = 10Vrms,
@17Ω is about 6V) At over circa 70Vrms output level (in case of alarm) it will be de-activated
automatically to ensure the maximum audio power and to avoid false clipping issues. At under circa
60Vrms output level, it will be re-activated automatically.
OFF: Line monitoring disabled
VOX
ON: Voice Operated Circuit enabled. This function removes the “hum and noisy” silences from the
audio path. This is the default setting.
OFF: Voice Operated Circuit disabled. Noise reduction is disabled.
2.8. Control In/Out (optional)
The RJ45 connector is for remote control and monitoring (without any network capabilities)
For more information and application example, please refer to section 3.8. Optional Connections.

8 EA1400/1600 Installation & User Manual A100K11939
2.9. Indicators
Power
A green LED is lit when the amplifier is powered
Fault
A yellow warning LED will be lit if any of these events have occurred:
Too high temperature
Overload on audio output
Ground fault or short circuit on output (Only if line monitoring is enabled)
Too high audio input signal (>1.5Vrms)
Internal fault
Line Error
A yellow warning LED will be lit by ground fault or short circuit on output. (Only if the line monitor
function is enabled).
VU meter
Green and red LEDs indicate the output level from -18 dB to +1 dB. When it goes over 0dB, clipping
will be activated, and the red LED will be lit.

A100K11939 EA1400/EA1600 Installation & User Manual 9
3 Installation & Wiring
3.1. Unpacking
In addition to the amplifier, 3 pieces mounting plugs (for Audio Input, Audio Output and Fault Relay) are
included in the delivery.
3.2. Mounting
The amplifier is prepared for mounting in a rack with a standard width of 483 mm (19”) and 89 mm (2 HU -
3½”) vertical space.
Rack Temperature: -15°C to +55°C
Zenitel recommends installing the amplifier in a ventilated technical instrument room with temperatures
between +18°C to +25°C. This will also extend the life span of the system. If operated in higher
temperatures, the output RMS power may be degraded by <2dB after a period of continuous operation.
Humidity: <95% RH
Compass Safe Distance: >145 cm
AC power outlet with provision for grounding.
Forced cooling may be needed to avoid overheating of the rack.
WARNING
Failure to observe the above precautions could result in overheating that could damage the equipment or
create a fire hazard.
3.3. Cable Layout
Do not run the installation cable from microphone and alarm panels parallel to, or too near the
cables for loudspeakers or power cables.
The shields must be interconnected in junction boxes and grounded in the amplifier unit only. It is
good practice to have separate conductors for each type of signal cabling.
Two-conductor shielded cable is required for the microphone.
3.4. Mains Power and Grounding
WARNING
Do NOT connect AC power to the amplifier until all the necessary input and output connections have been
completed. Use a dedicated single-phase power input that adheres to the following recommendations:
100..240 VAC, 50-60 Hz, fused and capable of delivering a maximum of 8A .
The operating power should be wired and fused independently from all other inputs.
A warning tag should be attached to circuit-breaker-type fuses to prevent unauthorized manual
operation.

10 EA1400/1600 Installation & User Manual A100K11939
The mains power cable should be 3 x 1 mm2rated for 500 VAC.
WARNING
Do NOT disconnect the third (yellow/green) wire in the power plug. This wire grounds the amplifier’s
chassis to prevent a possible shock hazard. If an adapter is used to connect the plug to an ungrounded
outlet, make sure that the amplifier’s chassis is connected to the vessel’s central ground. In a rack
installation, the amplifier’s grounding point is connected to the rack frame.
3.5. Input Connection
The line inputs are balanced, accepting 0.5 -1.5 Vrms signal over 9 K ohm.
The signal source is connected between pin 1 and 2, and the wire shield is connected to pin 3.
If the signal source is unbalanced, connect the signal wire to pin 1 and the neutral wire to pin 2.
If two or more amplifiers are using the same audio signal, connect the SOURCE terminals on the first
amplifier to the corresponding IN terminals on the next amplifier.
The input levels must be adjusted individually (use VOLUME potentiometer on each amplifier unit).