Zone 2 Speaker Connections Less Than 3.2 - Bose TouchTunes Service Manual

ZONE 2 SPEAKER CONNECTIONS LESS THAN 3.2

If a pre-installed speaker system is connected to the Zone 2 amplifier and it measures less
than 3.2 Ω (DC resistance), add resistors according to the table below before operating the
system. This will prevent the amplifier's short circuit protection from activating during loud
music. If the pre-installed speaker system measures less than 2.20 Ω, the speaker system
must be rewired for higher resistance. This can be achieved by wiring the individual speakers
in series or in a series parallel combination instead of all in parallel.
Speaker's Measured DC Resistance
3.20 Ω or Greater
Between 2.95 Ω and 3.20 Ω
Between 2.70 Ω and 2.95 Ω
Between 2.45 Ω and 2.70 Ω
Between 2.20 Ω and 2.45 Ω
Less than 2.20 Ω
ZONE 2
AUDIO
AMPLIFIER
OUTPUT
ZONE 2
AUDIO
AMPLIFIER
OUTPUT
8
7
6
R1
5
4
3
+
2
1
RIGHT
Figure 8. Low DC Resistance Connections
R1
8
7
R2
6
5
4
3
+
2
1
RIGHT
Figure 9. Low DC Resistance Connections
R1 R2
Not Applicable
.25 Ω
N/A
.50 Ω
N/A
.25 Ω .50 Ω
.50 Ω .50 Ω
Rewire System
16
15
14
13
12
11
10
9
LEFT
R1
16
15
R2
14
13
12
11
10
9
LEFT
26
Ω
Figure
8
8
9
9
R1
+
+