Bose FreeSpace 3 Installation and operating instructions

APPLICATION NOTE

FreeSpace®3

Business Music System

How to Modify FreeSpace 3 Wiring

This application note illustrates how to connect an Acoustimass®bass module in three common

installations.

I. Use of Transformer

II. Use of Direct Mode (Transformer Bypass)

Connecting a mono source with the Connecting a stereo source with the

transformer bypassed: transformer bypassed:

pro.bose.com

1OF2

PROFESSIONAL SYSTEMS

+100V

+70V

COMM

FreeSpace 3

Acoustimass Module

Note: Jumpers required

for 70V/100V operation.

For transformer bypass,

remove jumpers from

transformer settings and

use 4-8Ωinput.

SATELLITE

CONNECTIONS

4-8Ω

INPUT

STEREO

CH 2

STEREO

CH 1

SAT 1

SAT 2

MONO

USE JUMPERS

SAT 4

SAT 3

SAT 2

SAT 1

200W

100W

50W

25W

TRANSFORMER SETTINGS

___

+100V

+70V

COMM

MONO

70V/100V

INPUT

The transformer tap setting from the factory is for 200W use. To set it for lower wattage, remove the end of

the ‘+’ jumper wire connected to 200W and reattach it to the appropriate tap (100W,50W or 25W).

Connecting an amplifier output to a single

module in a 70V configuration:

Jumpers in

the factory-

installed

configuration

for 200W use.

FreeSpace 3

Acoustimass Module

Note: Jumpers required

for 70V/100V operation.

For transformer bypass,

remove jumpers from

transformer settings and

use 4-8Ωinput.

SATELLITE

CONNECTIONS

4-8Ω

INPUT

STEREO

CH 2

STEREO

CH 1

SAT 1

SAT 2

MONO

USE JUMPERS

SAT 4

SAT 3

SAT 2

SAT 1

200W

100W

50W

25W

TRANSFORMER SETTINGS

+100V

+70V

COMM

MONO

70V/100V

INPUT

FreeSpace®3

Loudspeaker System

APPLICATION NOTE

pro.bose.com

2OF2

III. Wiring Satellites to the Module (with or without Transformer)

+100V

+70V

COMM

MONO

70V/100V

INPUT

+100V

+70V

COMM

MONO

70V/100V

INPUT

For additional information on the FreeSpace 3 systems see the FreeSpace 3 Design Application note, or the

FreeSpace 3 Installation Guide.

Using 2 satellite speakers Using 4 satellite speakers with direct connections

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