X-DA4125EN
High Efficiency Power Amplifier
with 24 VDC Backup Power Supply
• Four channels 125W efficiency Class-D amplifier Automatic protection
• Fault detection
• Effective ventilation using forced air cooling fan
• CE complied
• With 24 VDC backup power supply

X-DA4125EN is the Class-D amplifier and it islighter, more stable,
and high efficiency. The audio transmission is completely digitalized
which makes it free from interference and easy to be controlled.
It also has 24 VDC backup power supply conforming to iternational
voice alarm standard which is the perfect choice for safety
required applications.
Features
INPUT/OUTPUT
X-DA4125EN supports both balanced and unbalanced audio inputs.
To receive unbalanced audio inputs, simply connect the ground port
with the negative input port to the rear panel. X-DA4125EN can receive
audio signal from XDCS2000/EN via Ethernet through the RJ45 standard
port.
FAULT DETECTION
X-DA4125EN can self-protect from overheat, over current, over voltage
and under voltage. For example, when the internal temperature reaches
its critical limit, the overheat protection circuit will shut down the power
amplification module and activate the protection indicator light on the
front panel.
X-DA4125EN can detect power supply errors automatically during operation.
The built-in fuse will provide over current protection to the main power supply.
When a shout circuit is detected in the main power supply circuit, the power
will be automatically shut down.The backup power supply will then be enabled
to replace the main one.
When a fault, self-protection or self-testing happens, its audio input fault por
on the rear panel will short circuit and a fault signal will then be sent to the
control unit in the network.
SAFETY
The device adopts lightweight design. The front panel is made of UL94V-0 fire
proof ABS material, protecting the machine under extreme conditions.
A cooling fan is equipped for heat exhaustion so that the machine can maintain
high working efficiency. The amplifier can work without main power in emergency.
VOLUME CONTROL
When HN-D32N Noise Detector is installed, X-DA4125EN can adjust volume
according to the ambient noise automatically to ensure high sound intelligibility.
INDICATORS
Ÿ Power light
Ÿ AC fault light
Ÿ DC fault light
Ÿ Signal light (for each channel)
Ÿ Clip light (for each channel)
Ÿ Protection light (for each channel)
INTERFACES
Ÿ Main power and 24 VDC backup power port
ŸAudio inputs (balanced or unbalanced)
Ÿ Audio outputs (100V or 70V)
Ÿ RJ-45 net cable port
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