Stereo audio switching – Extron Electronics IN2112R User Manual

Page 12

STEREO AUDIO SWITCHING

The IN2112R provides stereo audio-follow-video switching to accommodate stereo audio signals from a
computer audio card or other stereo audio sources. Whenever Input 1 or Input 2 is selected, the
corresponding stereo audio signal is routed to the audio output connector on the back of the interface, which
is normally connected to a house sound system.

AUDIO INPUTS

One 3.5mm female stereo mini jack is provided for each input. The input signal can be mono or stereo
unbalanced audio (line level or 8 ohm).

AUDIO OUTPUTS
One 3.5mm female stereo mini jack is provided for each local output. The audio output connectors on the
front of the interface provide a passive loop-out signal from the AUDIO INPUT connector. The audio
output connectors can drive local powered speakers. If the input signal is line level, the local audio outputs
can also be connected to a local recording device. The signal is always passed from the input to the local
audio output whether that input is currently selected or not.

MAIN STEREO AUDIO OUTPUT
One 5-pin captive screw terminal is provided on the backside of the interface for stereo audio output (see
Application Diagram on page 7). This connector outputs an audio signal from either Input 1 or Input 2
depending on which input is currently selected. The main audio output is set at the factory for unbalanced
audio signal. The output can be set for either unbalanced audio or balanced audio by setting four internal
jumpers located immediately adjacent to the 5-pin stereo audio connector as indicated below. When the unit
converts an unbalanced input signal to balanced output, the gain remains constant.

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