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20 - Installation Guide
Front and Rear Panels
pro.Bose.com
IZA 2120-HZ Rear Panel
Figure 5. FreeSpace IZA 2120-HZ amplifier rear panel
FS2C/SE/P
HPF (55 Hz)
FS4CE/SE
SUB
(55–100 Hz)
q w e r t y u i o a s d f
q INPUT A/B - Balanced and unbalanced line-level input connectors. Each input is summed to mono.
w INPUT GAIN - Allows for 0 dB to –30 dB of adjustment to each INPUT A/B.
e MUTE - Contact closure connection that upon trigger (short) will mute all outputs (including AUX OUTPUT).
r PAGE INPUT - Euroblock mic/line input that supports dynamic microphones with voice activation (VOX) or a trigger contact
closure for use with push-to-talk (PTT) microphones.
t PAGE INPUT GAIN - Allows for 0 dB to +50 dB of gain control of PAGE INPUT signal.
y PAGE INPUT THRESHOLD - Adjusts the level at which the VOX PAGE INPUT signal causes other inputs to be lowered. A 10 dB adjustment
range lifts the page trigger level away from the noise floor to prevent false triggers. At minimum setting, a –70 dBu signal will trigger a VOX
page. At maximum setting, a –60 dBu signal will trigger a VOX page. When in PTT page mode this adjustment is not active.
u EQ - Provides loudspeaker equalization presets: HPF (55 Hz), FreeSpace FS2C/SE/P, FS4CE/SE, and DesignMax DM2C-LP/S,
SUB(55–100 Hz). The HPF (55 Hz) is equivalent to a flat setting. Use this setting for loudspeakers that are not Bose or that do not
require EQ.
i DIP Switches - A bank of switches to set the amplifier configuration. All switches set to the left position is the standard
configuration.
• REMOTE 1 Control – Sets the REMOTE 1 input to control both outputs (or zones) simultaneously (ZONE 1+2), or allows each
REMOTE input to control its own output (ZONE 1). Each remote has independent A/B selection capability. If only one remote is
being used, then this switch must be set to ZONE 1+2.
• A/B SELECT – Determines if A/B inputs are selected by the front panel INPUT A/INPUT B switch (FRONT) or the rear panel
remote control input (REMOTE).
• AUTO STANDBY – If enabled (ON) the amplifier will go into standby mode after twenty minutes without an input signal. If in
standby mode and an audio signal is detected, the amplifier will automatically wake and amplify audio within 0.7 seconds. The
OFF position disables the feature.
• PAGE OUTPUT – Paging can be set to occur in ZONE 1 only or both zones, ZONE 1+2.
• PAGE BYPASS MASTER – Sets the paging volume to follow the front panel MASTER LEVEL setting (OFF) or to output
maximum volume (ON). The PAGE INPUT GAIN adjustment is available in either mode. Use this feature if the output volume is
too low to hear a page.
• PAGE MODE – Sets the amplifier to mix paging (MIX) with the selected input source or to duck the input source (DUCK) when
paging is activated.
• PAGE START – Determines if paging is to be activated by a push-to-talk (PTT) stimulus or voice stimulus (VOX).
• AUX OUTPUT 1 (White) – Determines if auxiliary output 1 will either have no EQ adjustment (FLAT) or an EQ adjustment
determined by the EQ 1 slide switch position (EQ).
• AUX OUTPUT 2 (Red) – Determines if auxiliary output 2 will either have no EQ adjustment (FLAT) or an EQ adjustment
determined by the EQ 2 slide switch position (EQ).
• AUX OUTPUT – Sets the auxiliary output level to either follow the front panel MASTER LEVEL control setting (VARIABLE), or to
the maximum output level (FIXED).
• AUX INPUT (ZONE 1+2 / ZONE 1) – The auxiliary input source can either be output into zone one only or both zones.
• AUX INPUT (ENABLED / DISABLED) – Enables (ENABLED) or disables (DISABLED) the auxiliary input. If enabled, inserting a
cable into the auxiliary input will mute INPUT A and B.
o AUX OUTPUT - Variable or fixed, unbalanced line-level output signal for use with ZA zone amplifiers or for routing the signal to
additional audio equipment.
a 70V/100V - Changes the outputs from 70V to 100V.
s REMOTE - Input connector for either a ControlCenter CC-2 zone controller for volume control and A/B source selection or a
ControlCenter CC-1 zone controller for volume control only.
d OUTPUT 1/OUTPUT 2 TRIM - Allows for up to 40 dB attenuation of the individual loudspeaker outputs relative to the master level.
f OUTPUT - Two inverted 2-pin Euroblock connectors for loudspeaker connections. Outputs are not bridgeable.
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