Setup - Rear-Panel Controls - Bose IZA 190-HZ Installation And Operating Manual

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2.8 Setup – Rear-panel controls
FreeSpace IZA 190-HZ
r
FreeSpace IZA 250-LZ
r
Amplifier mode DIP switches
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Page/Mic NorMal – ByPass Master
Determines if page input source will follow the master level output or can be set at an independent output level to
ensure announcements are heard.
outPut MoNo – outPut stereo
Determines if stereo input sources will be output in mono or stereo via loudspeaker connectors and AUX OUT RCA
connectors.
Note: On the IZA 250-LZ amplifier, OUTPUT 1 is the left channel and OUTPUT 2 is the right channel when set to
OUTPUT STEREO. On the IZA 190-HZ, the left channel is routed to the loudspeaker output when set to OUTPUT
STEREO.
FroNt Mic Mix – FroNt Mic Duck
Determines if front-panel microphone input will be mixed in with music source or if the music output level will be
automatically lowered ("ducked") when someone speaks into microphone.
aux out eQ – aux out Flat
Determines if AUX OUT will have selected loudspeaker EQ preset applied to it or not. Allows for optimization of
FreeSpace DS 16 and DS 40 loudspeakers when used with additional zone amplifiers.
Loudspeaker EQ preset switch
3
Provides loudspeaker equalization presets designed to optimize the performance of Bose FreeSpace DS 16 or DS 40
loudspeakers. A high-pass filter (HPF) setting is also available for use with any passive loudspeakers. The high-pass
filter is set at 60 Hz for the IZA 190-HZ and at 40 Hz for the IZA 250-LZ.
The selected EQ preset (HPF, DS 16, DS 40) can be sent to an additional zone amplifier via AUX OUT if "AUX OUT EQ"
is selected with the corresponding mode DIP switch.
Page input gain control
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Allows for fine-tuning page input levels. If the front-panel INPUT CLIP indicator is red, reduce the input gain.
The adjustment range is 0 dB to +50 dB.
Line input gain control
/
Allows for fine-tuning of INPUT A/B levels. If the front-panel INPUT CLIP indicator is red, reduce the input gain.
The adjustment range is –20 dB to +20 dB.
Output trim control
1
Allows for attenuating individual loudspeaker outputs relative to the Master Level. The adjustment range is –20 dB to
0 dB. This feature is helpful when one output is powering loudspeakers that need to be set at a lower volume level than
loudspeakers on other outputs – including the outputs of an additional zone amplifier.
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Setup and Operation
Installation and Operating Guide Page 25