Bose FreeSpace E-4 User Manual download pdf

FreeSpace

E-4 System

General Description

The Bose

FreeSpace

E-4 system is

an integrated four-channel digital

signal processor and 400-watt power

amplifier for 70/100V business appli-

cations.

Freespace system Installer

software,

included with each unit, makes it easy

to configure and service the E-4

system.

With capacity for four source inputs,

including two Line In, one Mic/Line

and one Page/Mic/Line, the E-4

system provides the inputs needed

for most business music installations.

Its proprietary power-sharing amplifier

dynamically shares 400 watts across

4 output channels ranging from as low

as 1W to as high as 400W. For

example, if you have a two-zone

system that requires 5 watts in Zone 1

and 395 watts in Zone 2, the

FreeSpace E-4 system distributes the

power based on those needs.

As a single component, the E-4

provides the processing and control

features required for one-to-four zone

business music applications. These

features include:

• Auto Volume: Offers dynamic

control of individual zone volume

levels to compensate for changes in

background noise level. Auto

Volume requires the use of the

FreeSpace E-4 System Auto Volume

Mic Kit.

• Scheduling: Allows programming of

the E-4 system for automated on/

off, volume, and source changes

according to time of day or day of

week.

• Opti-Voice

paging: Provides the

appropriate sound level regardless

of variations in speech projection.

• Source Leveling: Automates system

compensation for variations in

source input levels.

• Dynamic Equalization: Maintains

tonal balance at all listening levels.

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Power Amp Specifications

Power Output

Total shared power available for all

channels: 400W

Maximum power per channel: 400W

Output Configurations

70.7V or 100V nominal

Frequency Response

20 Hz to 20 kHz ±3dB

Channel Separation

>70dB @ 1 kHz

THD

<1.0% at rated power, 0.1% at half

rated power

Signal-to-Noise Ratio

>97dB, A-weighted

Slew Rate

20V/µs

DSP Specifications

Sample Rate

44.1 kHz

A to D Conversion

24-bit, 128x oversampling

D to A Conversion

24-bit, 128x oversampling

Front Panel Indicators

and Control Connections

Amp Output Signal Indicators

Zone 1 – 4: dual-color LED

Source Input Signal Indicators

Source 1 – 4: dual-color LED

Other Indicators

System Status: dual-color LED

Direct Input: yellow LED

Standby Button: button

Standby Indicator: yellow LED

PC Input

USB connector (for future use)

Tested with AES 17 low-pass filter.

Rear Panel Inputs, Outputs,

and Controls

Audio Inputs

Line Level Inputs

Type: Unbalanced RCA connectors

summed to mono

Sensitivity: -20 dBV to +20 dBV

Impedance: 25K Ohms

Input Clip Level: +17 dBV

Mic Level Inputs

Type: Balanced Euroblock connectors

Sensitivity: -60 dBV to 0 dBV

Impedance: 3.3K Ohms

Input Clip Level: +17 dBV

Direct Input

Type: Balanced Euroblock connectors

Input Sensitivity: 0 dBV

Input Impedance: 2.5K Ohms

Input Clip Level: +6 dBV

Sense Mic Inputs

ZONE 1 – 4: Euroblock connector

Control Connections

Wall Plate Zone 1 – 4: RJ45 connector

Remote On/Off Input: Euroblock

connector

PC Input: RS-232 connector

Power Amplifier Outputs

(70V or 100V only)

Zone Out 1 – 4: Inverted Euroblock

connector

Audio Outputs

Music on Hold/PBX Output:

Euroblock connector

Zone 4 – Line Out: Euroblock

connector

Output Configuration

70V or 100V: switch

AC Power Consumption

60W or less at idle

200W with musical program

600W at maximum continuous rated

power (1 kHz, sine wave input) 70V or

100V mode

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Technical Information

English

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Summary of Contents

Page 1 - E-4 System

FreeSpace®E-4 SystemGeneral DescriptionThe Bose® FreeSpace® E-4 system isan integrated four-channel digitalsignal processor and 400-watt poweramplifie

Page 2 - ..continued

Technical Information...continuedGeneral Description ...continued• Music on Hold: Provides an outputfor simple integration into a phonesystem.

Page 3 - Warranty Information

ZONE OUTZONE4LINE OUTDIRECT IN/CONTROLSENSE MICROPHONESZONE 1 ZONE 2 ZONE 3 ZONE 4WALL PLATE CONNECTIONSREMOTEON/OFFLINE 2MUSIC ONHOLD/PBX OUTBose Cor

Page 4 - RISQUE DE CHOC ELECTRIQUE

70/100V Single-Zone Configuration ExamplePagingmicrophoneMusic sourceZONE 1FreeSpace® 3 SeriesII systemsZONE 1Standard UserInterfaceZONE OUTZONE4LINE

Page 5

70/100V Four-Zone Configuration ExampleZONE 1 – Dining RoomFreeSpace® 3 Series IIsystemsPagingmicrophoneMusic sourceTV sourceZONE OUTZONE4LINE OUTDIRE

Page 6 - Installer