4. Operation
Using the BALANCED IN
The BALANCED IN accepts a
PRIORITY Function
The BALANCED IN has priority over the UNBALANCED IN. The priority function can be activated by connecting a
Using the UNBALANCED IN
The UNBALANCED IN accepts either a
High-Pass Filter
Push in the H.P. switch to engage the
Low-Pass Filter
Push in the L.P. switch to engage the
12dB/octave.
Note: The H.P. and L.P. filters affect both the
balanced and unbalanced inputs.
COMMANDS STANDBY
An external
Note: The UP4000 Series is shipped with the Standby Mode disabled. Move jumper J1 on the input board to enable the Standby Mode (see instructions on page 8).
OVERL.
Connect an LED or relay between this terminal and the GND terminal to provide an external indication if the overload circuit has been activated. It provides +18 VDC with a maximum output capacity of 300mA when activated. See "Application Diagram" on page 6.
POWER OUTPUTs
The amplifier outputs on the UP4000 Series can be used with a
Direct Speaker Connection
If the UP4000 Series is not being used in a distributed speaker system, you can connect a speaker with a
Using the PARALLEL OUT
The PARALLEL OUT connector is provided to connect the UNBALANCED IN signal to multiple amplifiers in a
To Next
Amplifier
Distributed Speaker System
When using the UP4000 Series in a distributed system, connect the distributed system between the appropriate POWER OUTPUT terminal (25V, 50V, 70V, or 100V) and the "0" terminal. Make sure the speakers in the system are tapped appropriately so they do not exceed the rated power of the amplifier. (AM4060 = 60 watts, AM4120 = 120 watts, AM4160 = 160 watts).
From Signal
Source
UP4000 Series
POWER INPUT 24V D.C.
The UP4000 Series can be powered using a 24 VDC power supply. This can serve as the primary power supply for the UP4000 Series, or as a backup supply in case of an AC power failure. The UP4000 Series seamlessly switches to the backup supply if there is a power loss. When both AC power and 24 VDC power are connected, the AC power is used and no current is drawn from the DC supply.
Note: The unit is not equipped with battery charging capability.
UP4000 – 9