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Installation
Output Power Configurations
The PM8500 amplifier allows output power to be allocated between 2 to 8 output channels and allows for both low-impedance and
high-impedance (70V and 100V) loudspeaker loads. To illustrate the possible output configurations, the menu display for CH 1 output
configurations are presented below:
CH 1Menu Display
MONO
CH1+2 V-Bridge (Low-Z)
CH1+2 V-Bridge (70V)
CH1+2 V-Bridge (100V)
CH1+2 I-Share (Low-Z)
CH1+2+3+4 Quad (Low-Z)
CH1+2+3+4 Quad (70V)
CH1+2+3+4 Quad (100V)
Note: For I-Share and Quad Bridge Modes, changing the output configuration will automatically place the unit in Standby Mode to allow
different loudspeaker cable connections to the rear-panel output terminal blocks. Additionally, the menu displays are context-sensitive;
not all combinations are possible for all channels.
The front-panel output meters automatically change display width to identify the various output configurations during normal operation.
The 4 possible output configuration meter displays are presented below (note the mixed mode display has many other possible
combinations):
Figure 5. Front-Panel Output Meters by Configuration
Mono (8 x 500 W)
Quad Bridge (2 x 2000 W)
Page 12
Installation and Safety Guidelines
Channels Effected
CH 1
CH 1 and CH 2
CH 1 and CH 2
CH 1 and CH 2
CH 1 and CH 2
CH 1, CH 2, CH 3, CH 4
CH 1, CH 2, CH 3, CH 4
CH 1, CH 2, CH 3, CH 4
Power Rating
500 W @4Ω
1000 W @8Ω
800 W @70V
1000 W @100V
1000 W @2Ω
2000 W @4Ω
1600 W @70V
2000 W @100V
Intended Loudspeaker Load
2 to 16 ohms
4 to 8 ohms
70-V "constant voltage" lines
100-V "constant voltage" lines
2 ohms
2 ohms
70-V "constant voltage" lines
70-V "constant voltage" lines
V-Bridge or I-Share (4 x 1000 W
Mixed Mode (varies by configuration)
pro.Bose.com
Max Channels
8
4
4
4
4
2
2
2
English