DPA digital power amplifier
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© 2018, ATEÏS, member of PAX ProAV Group
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DPA digital power amplifier
The DPA is a class-D power amplifier with extremely low power consumption (0.2W per channel)
during standby mode, and high amplification efficiency of 90%. A four-step DIP switch can be
configured to enable/disable the function of standby mode (power-save mode) when powered by AC
mains; to request the LEDs on the front panel to comply to EN54-16; and to enable/disable the
battery monitoring.
The amplifiers are powered by 100 VAC ~ 240 VAC 50/60 Hz or 48 VDC battery backup. Each
model has the line inputs with individual volume gain, status LEDs (power, battery, fault, general
fault, overload and signal) on the front panel, and the DPA models can bridge two channels to double
the power wattage.
2.1
Front panel
The front panel of DPA2500/DPA4125/DPA4250/DPA8060 is identical, except the number of
channel is different.
1. Power LED:
This LED lights up if the DPA is powered by AC mains power.
2. Battery LED:
This LED lights up if the DPA is powered by 48VDC power supply.
3. GEN-fault LED:
This LED lights up in yellow if one of the following situation occurs: output over-current, overheat,
AC power fault, battery power fault (the [BAT-MNT] DIP switch is set ON) and Lamp Test input is
short circuit.
4. Overload LED:
The overload LED will blink as soon as the output power exceeds the nominal value. If this LED
is blinking, check whether the speaker is connected correctly and still in good condition, also
check if the level of input signal is over 0 dB.
5. Channel fault LED:
