Bose 4400 User Manual

13 of 66

3.0 Freespace

4400 Hardware Description

3.2 Rear panel

3.2.1 System controls

SENSE MICROPHONES – Input connectors for sensing

microphones used with the Auto Volume feature.

RS-232 – Standard RS-232 communications port. Provides

a communications interface for a PC running FreeSpace

4400

Installer™ software. The FreeSpace 4400 Installer™ software is
used to configure the FreeSpace 4400 system.

Note:

The RS-232 port should only be used to connect a

FreeSpace 4400 system to a PC.

WALL PLATE CONNECTIONS – Input connectors for AVM

1-Zone, AVM 2-Zone User Interface, or Page user interfaces.

REMOTE ON/OFF – An input connector for a remote

STANDBY switch.

3.2.2 Audio source inputs

LINE 1/LINE 2 – Unbalanced audio inputs

AUX MIC/LINE 3 – Balanced audio input with phantom power

PAGE/MIC/LINE 4 – Balanced audio input with phantom power

DIRECT IN/CONTROL – Balanced (DSP bypassed, full amplifier
gain) audio input which can override the sources playing on all
four output channels

3.2.3 Amplifier outputs

ZONE OUTPUTS 1/2/3/4 – Loudspeaker connections for

four zones

Installer’s Note: Please notice the polarity markings when
wiring loudspeaker cables to the ZONE OUTPUT connectors.

CAUTION: DO NOT ground the minus (–) terminals.

ZONE 4 LINE OUT – A line-level output that duplicates the

program material from LINE 4. May be used to feed another
amplifier installed for a large zone. The 12V control output is used
to connect to Bose

amplifier sequence inputs.

MUSIC ON HOLD/PBX OUT – An audio output used to

provide music input to a PBX system

3.2.4 AC power

OUTPUT VOLTAGE – Sets the ZONE OUTPUT lines to 70/

100V.

POWER ON/OFF – Switches AC power on or off

Fuse –T6.3(6,3)A L 250V (100/120V) or

T3.15(3,15)A L 250V (220-240V).

AC MAINS LINE CORD JACK – AC line voltage input

INPUT VOLTAGE – switches need to be configured for

proper input voltage.