Bose FreeSpace 3

APPLICATION NOTE
FreeSpace
®
3
Business Music System
How to Modify FreeSpace 3 Wiring
T
his application note illustrates how to connect an Acoustimass
®
b
ass module in three common
i
nstallations.
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
1
O
F
2
PROFESSIONAL SYSTEMS
PA
+100V
+70V
COMM
FreeSpace 3
Acoustimass Module
®
Note: Jumpers required
for 70V/100V operation.
For transformer bypass,
remove jumpers from
transformer settings and
use 4-8Ω input.
SATELLITE
CONNECTIONS
4-8Ω
I
NPUT
STEREO
CH 2
STEREO
CH 1
SAT 1
S
AT 2
MONO
USE JUMPERS
SAT 4
SAT 3
S
AT 2
SAT 1
+
200W
100W
50W 25W NC
TRANSFORMER SETTINGS
_
__
+100V
+70V
COMM
M
ONO
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
t
he factory-
i
nstalled
configuration
for 200W use.
FreeSpace 3
Acoustimass Module
®
N
ote: Jumpers required
for 70V/100V operation.
For transformer bypass,
remove jumpers from
transformer settings and
use 4-8Ω input.
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
NC
TRANSFORMER SETTINGS
+100V
+70V
COMM
MONO
70V/100V
INPUT