Bose FreeSpace E-4 Specifications download pdf (Page 13)

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1.0 E4 Introduction

1.1 The Bose

FreeSpace

E4 Series II

business music system

The Bose FreeSpace E4 Series II system is an integrated four-

channel digital signal processor and 400-watt power amplifier for

70/100V business music applications.

The E4 system has a total of four source inputs, including two

Line In, one Mic/Line and one Mic/Page/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 E4 system has four amplifier output channels which can be

configured for different zones. A Music on Hold output 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, E4 system electronics dynamically

control the program level in each zone so your customers can

always hear it, regardless of the background noise.

• Scheduling: Allows you to program the E4 system 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 E4 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 E4 system

electronics distributes the power based on those needs.

The E4 also includes an easy-to-replace memory module, which

holds the system configuration settings and design file uploaded

by the FreeSpace Installer™ software (see page 14).

1.2 E4 system accessories

Optional Bose accessories for the E4 system are available.

• FreeSpace E4 System User Interface Kit (U.S.) (PC029856)

A wall-mountable keypad that fits into a standard U.S. single-

gang junction box. It provides buttons for volume up/down

control, 1-3 source selection, and mute.

• FreeSpace E4 System User Interface Kit (Euro) (PC029857)

A wall-mountable keypad that fits into a standard Euro single-

gang junction box. It provides buttons for volume up/down

control, 1-3 source selection, and mute.

• FreeSpace

E4 System Auto Volume Interface Kit (U.S.)

(PC030101)

A wall-mountable keypad that fits into a standard U.S. single-

gang junction box. It provides buttons for volume up/down

control, 1-3 source selection, and Auto Volume on/off.

• FreeSpace E4 System Auto Volume Interface Kit (Euro)

(PC030102)

A wall-mountable keypad that fits into a standard Euro single-

gang junction box. It provides buttons for volume up/down

control, 1-3 source selection, and Auto Volume on/off.

• FreeSpace E4 System Auto Volume Mic Kit (U.S.)

(PC029859)

One sensing microphone that can be mounted as is or in a

standard U.S. single-gang junction box.

• FreeSpace E4 System Auto Volume Mic Kit (Euro)

(PC029860)

One sensing microphone that can be mounted as is or in a

standard Euro single-gang junction box.

• FreeSpace E4 System Accessory Kit (U.S.) (PC030105)

Supplemental rear panel mating connectors and non-skid feet.

• FreeSpace E4 System Rack Mount Kit (PC029858)

One pair of rack ears.

• FreeSpace E4 System Page Interface Kit (U.S.) (PC030103)

A wall-mountable keypad that fits into a standard U.S. single-

gang junction box. It provides buttons for 1-4 page zone selec-

tion, all page zones selection and initiate page.

• FreeSpace E4 System Page Interface Kit (Euro) (PC030104)

A wall-mountable keypad that fits into a standard Euro single-

gang junction box. It provides buttons for 1-4 page zone selec-

tion, all page zones selection and initiate page.

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Bose FreeSpace E-4 Specifications Page 13

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