4
WARNING: The fuse should only be replaced when the power cord has been disconnected from its power source!
(6) Power Switch
This rocker switch applies mains power to the unit.
(7) Line Voltage Selector Switch
The line voltage select should be checked and set to match the mains voltage before connecting and operating this unit. The
UMA 4300 can be operated at 100V-120 VAC or 220-240 VAC 50/60 Hz.
(8) Outputs
A direct output and transformer outputs are provided to allow proper interface between the amplifier and the loudspeaker
system. Connect the loudspeaker system to the appropriate output connector and the COM terminal. Connections for 4
Ohm, 25 Volt, 70 Volt and 100 Volt systems are available.
(9) Input Channel Level Controls
These rotary controls set the channel signal level sent to the mix bus. Adjust this control for the desired output volume.
(10) Line/Mic Switch
This switch configures the channel gain and input impedance of channel 1 for microphone or line level applications. Press in
for line level input sources.
(11) Balanced Input Connector (Input 1)
The electronically-balanced input will accept both line and mic level signals as set by the line/mic switch.
(12) Dual RCA Input Connectors (Input 2)
The dual RCA input connectors provide an easy way to connect a mono or stereo, unbalanced source to the IPA 2300.
(13) Threshold Control
Channel 1 can be the controlling channel of the priority mute system. When the signal level on channel 1 exceeds the
threshold set by the threshold control, channel 2 is muted. Setting this control at the full counter-clockwise position defeats
the muting function.
(14) Mute All
Connecting the two terminals on the mute all input connector, mutes all audio through the IPA 2300. This may need to be
connected to a fire alarm system, for example, to mute audio in case of emergency. The ACL light on the front panel will light
when this mute is activated
NOTE
: For rack mount installations, use 4 machine screws through the front panel mounting holes to secure the amplifier to
the rack rails.
Summary of Contents for IPA 2300
Page 1: ...1 IPA 2300 Power Amplifer Owner s Manual...
Page 5: ...5 Block Diagram...
