Bose Volume Control with A/B Select User Interface User Manual Page 3

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FreeSpace
®
IZA 250-LZ / 190-HZ
integrated zone amplifier
TECHNICAL DATA SHEET
Bose Professional Systems Division
3
OF 6
pro.Bose.com
1. POWER SWITCH - ON/OFF AC power
2. POWER - LED indicates if unit is active
3. INPUT CLIP – LED indicates when any input source approaches the threshold value of -3 dBFS
4. MIC/LINE INPUT - Combination balanced XLR-TRS connector for use with dynamic microphones
5. MIC/LINE INPUT GAIN - Allows gain adjustment (0 dB to +50 dB) of microphones connected to the MIC/LINE INPUT
6. AUX INPUT - 1/8" (3.5 mm) stereo line-level input connector. Connection mutes INPUT A and INPUT B for priority override
7. INPUT A/B* - Allows selection of rear line-input channels A or B
8. TREBLE/BASS - Allows tonal adjustments of output channels. Provides +/-6 dB adjustment at 7 kHz and 100 Hz
9. 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.
1. INPUT A/B - Two channels of stereo RCA input connectors
2. INPUT GAIN - Allows for -20 dB to +20 dB of adjustment to each INPUT A/B input
3. PAGE INPUT - Euroblock mic/line input with trigger contact closure for use with push-to-talk microphones
4. PAGE INPUT GAIN - Allows for 0 db to +50 dB of gain control of page input signal
5. DIP switches - A bank of four switches set the amplifier configuration
6. REMOTE - Input jack for Bose® Volume control with A/B switch or Volume control user interface
7. AUX OUT - Variable output line-level signal for use with ZA zone amplifiers or for routing signal to additional audio equipment
8. EQ - Provides loudspeaker equalization presets for the FreeSpace DS 16 and DS 40 loudspeakers. Can be set to high-pass filter
(HPF) for an amplifier rated frequency response
9. MUTE - Contact closure connection that upon trigger (short) will mute all outputs (including AUX OUT)
10. OUTPUT 1 / OUTPUT 2 TRIM - Allows for up to 20 dB attenuation of the individual loudspeaker outputs relative to the master level
11. 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)
12. AC Mains receptacle – AC line voltage input
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