Clear-Com i-Series Panels - Manual (Page 58)

microphone audio out through the SA output. This function overrides external IFB and ISO,
interrupting matrix communications to these external systems.
You can program the relay to activate whenever you press a designated source or
destination’s key at the intercom panel.
7.4.3 External Speaker Input Connector
The 1/8-inch tip/sleeve mini-connector labeled “J6” connects to and powers an external
speaker. Its impedance rating is 4–8 Ohms and its power rating is 1/2 watt at 4 Ohms.
Note that when you plug an external speaker into this connector, the front-panel internal
speaker is still active. You can deactivate one or both speakers through the Eclipse
Configuration System.
The front-panel’s main-volume knob controls the volume for both the rear-panel and front-
panel speakers. The volume of both speakers is the same.
7.4.4 Line-Level Output Connector
The 1/8-inch tip/ring/sleeve mini-connector labeled “J7” is a line-level, transformer-
balanced output of all of the audio that comes to the panel from the central matrix. All of
the audio that you would hear at a panel’s speaker, from all sources, is sent through this
connector. The output’s volume is at line level, bypassing the panel’s audio controls.
This output is typically connected to an externally powered speaker, amplifier, or ceiling
speaker system.
The line-level output connector’s output impedance is 600 Ohms and its level is nominally
0 dBu. Frequency response is 50 Hz–15 kHz (± 2 dB).
7.4.5 Hot-Microphone Output Connector
The A3M standard XLR connector labeled “J8” provides a line-level output of the selected
microphone’s audio (headset or panel) that is always “on” (or “hot”). Only the panel’s
microphone on/off key can override this output.
This connector’s output impedance is 600 Ohms. Its level is nominally 0 dBu. Frequency
response is 50 Hz–15 kHz (± 2 dB).
A typical application is to permanently wire the panel’s microphone audio output to all
cameras so that the camera operators can hear the director at all times, regardless of what
other tasks they are performing. This audio output can also be connected to many types of
external speakers, such as external wall speakers. The purpose of this output is to provide
an audio output that is always “on” and cannot be interrupted by other audio sources.
Note: The Eclipse Configuration System’s listen or eavesdropping function will accomplish the
same results as the hot-microphone output. See the Eclipse Configuration System Manual
for more information.
7.4.6 Balanced Program Input Connector
The A3F standard XLR connector labeled “J9” connects an external source of audio to
your panel so that you can hear it in addition to the intercom audio at your panel. The
external source of audio, or “program” audio, can be heard on your panel’s speaker and
headset, but it cannot be heard by other panels in the Eclipse matrix system.
58 I-Series Panels User Guide