Data Sheet
PRO.BOSE.COM 3 OF 5
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POWER SWITCH – ON/OFF AC power
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POWER – LED indicates if unit is active
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INPUT CLIP – LED indicates when any input source approaches the threshold value of -3 dBFS
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MIC/LINE INPUT – Combination balanced XLR-TRS connector for use with dynamic microphones
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MIC/LINE INPUT GAIN – Allows gain adjustment (0 dB to +50 dB) of microphones connected to the MIC/LINE INPUT
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AUX INPUT – 3.5 mm (1/8”) stereo line-level input connector. Connection mutes INPUT A and INPUT B for priority override
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INPUT A/B* – Allows selection of rear line-input channels A or B
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TREBLE/BASS – Allows tonal adjustments of output channels. Provides +/-6 dB adjustment at 7 kHz and 100 Hz
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MASTER LEVEL* – Controls the overall system volume for both the loudspeakers and the variable AUX OUT connector
*When using a REMOTE connection with the system, the INPUT A/B selector switch and MASTER LEVEL control become disabled
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INPUT A/B – Two channels of stereo RCA input connectors
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INPUT GAIN – Allows for -20 dB to +20 dB of adjustment to each INPUT A/B input
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PAGE INPUT – Euroblock mic/line input with trigger contact closure for use with push-to-talk microphones
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PAGE INPUT GAIN – Allows for 0 db to +50 dB of gain control of page input signal
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DIP switches – A bank of four switches set the amplifier configuration
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REMOTE – Input jack for CC-1 volume control (operates with a fixed input B) or CC-2 volume control with A/B source select
user interface.
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AUX OUT – Variable output line-level signal for routing signal to additional audio equipment
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EQ – Provides loudspeaker equalization presets for the FreeSpace FS2 and FS4 loudspeakers. Can be set to high-pass filter
(HPF) for an amplifier rated frequency response
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MUTE – Contact closure connection that upon trigger (short) will mute all outputs (including AUX OUT)
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OUTPUT 1 / OUTPUT 2 TRIM – Allows for up to 20 dB attenuation of the individual loudspeaker outputs relative to the master level
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OUTPUT – Speaker connections for up to two 4Ω or 8Ω loudspeaker loads (IZA 250-LZ) or one 3-pin Euroblock for 70/100 V
systems (IZA 190-HZ)
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AC MAINS RECEPTACLE – AC line voltage input
FreeSpace IZA 250-LZ / 190-HZ
Integrated Zone Amplifier
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