1. GENERAL NOTES
The amplifier DPA 4410 has been specially designed to ensure durable performance and reliable
operation of sound reinforcement systems with several independent speaker circuits. The DPA 4410 is
best suited for call and message transmission installations, alert systems, and for general music
applications in industrial enterprises, offices, multi-functional halls and sports arenas, schools, churches,
hotels, hospitals, supermarkets, cruise ships, and other similar occasions.
2. INSTALLATION NOTES
When placing or mounting the amplifier, it is important that the air-flow can pass unhindered through the
air inlets on the front and the air outlets on the rear of the appliance (see also paragraph 10).
The amplifier has to be protected from:
- dropping or splashing water
- direct sunlight
- high environmental temperatures or direct radiation of heat sources
- moisture
- dust
- shock or vibration
When moving the amplifier from a cold into a warm environment, condensation of its inner parts can
sometimes occur. If so, the appliance can be operated again after gaining the environmental temperature
(approximately after one hour).
If a solid object has fallen or liquid has leaked into the device, disconnect all connections and get in contact
with an authorized DYNACORD service center. Do not operate the amplifier after such accidents.
When cleaning the amplifier’s outside enclosure, never use any cleaning sprays or detergents, because
of inflamability. The use of those liquids will damage the appliance.
3. PRECAUTIONS AND RECOMMENDATIONS
When the appliance is operated with the mains supply, use the included mains cable to connect the
amplifier to a 230 V or 115 V 50/60 Hz wall outlet. Connect the cable’s other end to the appliance’s 3-pole
machine-type socket (10).
Warning The amplifier is factory-set to 230 V AC. To change this setting use the voltage switch
(12). For the operation with 115 V AC, the mains fuse (11) has to be exchanged by an
8 A slow-blow fuse with the label print “T8A” (see also paragraph 11).
When using the amplifier with a remote-start device, an external 24 V DC source has to be connected to
the REMOTE CONTROL connector (16) (see also paragraph 5.6). If the connection was performed right
and 24 V DC voltage is present, the STANDBY indicator (4) will light.
The POWER switch (9) on the rear of the amplifier for bridging the starting relay is meant only for service
purposes. In that case the amplifier can be operated without the external 24 V DC supply.
Note The POWER switch (9) on the rear of the amplifier is meant only for service purposes. If this
switch is engaged, the remote power-off function of the appliance is not operational and the
STANDBY indicator provides no indication.
The DPA 4410 is equipped with a cut-in delay of approximately 3 seconds to efficiently suppress
power-on noise.
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