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1.0 FreeSpace
®
4400 Introduction
1.1 The Bose
®
FreeSpace
®
4400
Business Music System
The FreeSpace
®
4400 system is an integrated four-channel digital
signal processor and 400-watt power amplifier for 70/100V busi
-
ness music applications.
The FreeSpace 4400 system has a total of four source inputs,
including two Line In, one Mic/Line and one Page/Mic/Line, to
provide the inputs needed for most business music installations.
The system also has a direct input which can override the
sources playing on all four output channels.
The FreeSpace 4400 system has four amplifier output channels
which can be configured for different zones. A Music on Hold out
-
put is also provided for simple integration into a phone system.
In a single chassis, it provides all of the processing and control
features required for one-to-four zone business music applica-
tions. These features include:
• Auto Volume: When used with the optional FreeSpace system
Auto Volume Sense Mic, FreeSpace 4400 system electronics
dynamically control the program level in each zone so your cus
-
tomers can always hear it, regardless of the background noise.
• Scheduling: Allows you to program the FreeSpace 4400 sys-
tem electronics for automated on/off control, source changes,
and volume changes according to time of day or day of week.
• Multi-Zone Paging: Allows you to initiate a page from a single
keypad to one or more of the zones being powered by the
same FreeSpace 4400 system.
• Opti-voice
®
Paging: Provides a smooth transition between
music and page signals.
• Opti-source
®
Input Leveling: Monitors the input level of up to
four sources and continually makes adjustments to maintain a
consistent volume level between different sources.
• Dynamic Equalization: Maintains tonal balance at all listening
levels.
• Room Equalization: Provides easy adjustment of tonal bal-
ance in each zone.
• Signal Routing: Meets the demands of most four-zone sys-
tems, allowing for an input source to be routed to any of the
four amplifier outputs.
• Serial Data Interface: RS-232 serial port for easy interfacing
to your PC
• Remote On/Off Input: Accepts a remote STANDBY switch
The integrated 400-watt power amplifier features a patented
power-sharing technology which dynamically allocates power to
each output.
For example, if you have a two-zone system that requires 5 watts
in Zone 1 and 395 watts in Zone 2, the FreeSpace 4400 system
electronics distributes the power based on those needs.
The FreeSpace 4400 system also includes an easy-to-replace
memory module, which holds the system configuration settings
and design file uploaded by the FreeSpace 4400 Installer™
software
(see page 3).
1.2 FreeSpace 4400 system accessories
Optional Bose accessories for the FreeSpace 4400 system are
available.
• FreeSpace 4400 System AVM 1-Zone User Interface
(PC042351)
A wall-mountable keypad that fits into a stan-
dard double-gang junction box. It provides buttons for volume
up/down control, 1-3 source selection, and mute or Auto Vol-
ume on/off controls for a single zone.
• FreeSpace 4400 System AVM 2-Zone User Interface
(PC042352)
A wall-mountable keypad that fits into a stan-
dard double-gang junction box. It provides buttons for volume
up/down control, 1-3 source selection, and mute or Auto Vol-
ume on/off controls for two zones.
• FreeSpace 4400 System Auto Volume Mic Kit (U.S.)
(PC042354)
One sensing microphone that can be mounted
as is or in a standard U.S. single-gang junction box.
• FreeSpace 4400 System Auto Volume Mic Kit (Euro)
(PC042355) One sensing microphone that can be mounted
as is or in a standard Euro single-gang junction box.
• FreeSpace 4400 System Page User Interface
(PC042353)
A wall-mountable keypad that fits into a stan-
dard double-gang junction box. It provides buttons for 1-4
page zone selection, all page zones selection and initiate page.