Bose FreeSpace E-4 User Manual download pdf (Page 2)

Technical Information.

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General Description

.

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• Music on Hold: Provides an output

for simple integration into a phone

system.

• Room Equalization: Provides easy

adjustment of tonal balance in each

zone.

• Limiting: Protects loudspeakers from

unwanted transient power loads.

• Signal Routing: Allows for an input

source to be routed to any of the

four amplifier outputs.

• System Diagnostics: Generates an

extensive error log and includes an

easy-to-replace memory module to

minimize downtime.

• RS-232 for connection to a PC.

• Remote Power Sequencing: Provides

a contact closure input.

The system shall use a digital signal

processing architecture running at a

44.1 kHz sample rate. The frequency

response shall be from 20 Hz to

20 kHz (±3dB). The signal-to-noise

ratio shall be greater than 100dB

A-weighted.

The power amplifier section shall

deliver 400W of maximum power

with less than 1.0% THD from

20 Hz to 20 kHz (±3dB). Channel

separation shall be >70dB, 20 Hz

to 20 kHz.

The system shall consume power of

60 watts or less at idle, 200 watts

with musical program, 600 watts at

maximum continuous rated power

(1 kHz, sine wave input) 70V or

100V mode.

E-4 System Engineers’ and Architects’ Specifications

The system shall run the following

algorithm and controls:

• Input Gain

• Input Trim

• Source Leveling

• Mic/Line/Page Assignment

• Opti-Voice

®

paging

• Signal Routing

• Auto Volume Setup

• Scheduling

• Dynamic EQ

• Music on Hold

• Room EQ

• Loudspeaker EQ for Bose

®

speaker

products

• Output Level Control Scheduling

• Limiting

• System Diagnostics

The system shall weigh 30 lb

(13.6 kg).

The system enclosure construction

shall be a steel chassis designed for

rack or shelf mounting.

The system shall be the FreeSpace

®

E-4 system from Bose.

Power Requirements ( 10%)

120 VAC/50-60 Hz

220 VAC/50-60 Hz

240 VAC/50-60 Hz

100 VAC/50-60 Hz

Fusing/Protection

120V: T6.25A, 250V rated

240V: T3.15A, L250V

Size (H x W x D)

5.25" (3U) x 17.25" x 15.5"

(13.3 cm x 43.8 cm x 39.4 cm)

Weight

30 lb (13.6 kg)

Enclosure Construction

Steel chassis designed for rack or

shelf mounting

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