Bose PM8500N manual Troubleshooting, Problem Possible Solution

Models: PM8500N PM8500

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User Guide

 

 

 

Troubleshooting

 

 

 

 

 

Problem

 

Possible Solution

 

 

No power

• Turn on power switch. Clip, Limit, and Signal LEDs should stay lit for approximately the first 15 seconds, after which

 

 

the amplifier should be fully ready for operation. The amplifier’s LCD screen will show the firmware version screen after

 

 

about 10 seconds, then revert to the operating screen.

 

• Check power cable, ensure retaining clip is in place.

 

Check mains circuit.

 

 

Power is on, but no sound

Check the LCD screen for output meter activity. If no signal activity, check the following:

 

• Check the Input Meter screen for presence of signal. If no signal, fix source or cabling.

 

• Ensure that input and output signals are not muted.

 

• Check that Input Routing is configured properly.

 

• Check that Input Source is set to appropriate signal type (analog or digital).

 

• Check that Output Attenuate is not set too low.

 

• Make sure loudspeakers are wired correctly to output connectors.

 

• Check that Output Configuration is set correctly.

 

• Check that Standby Mode is not active.

 

 

Power is on, sound is low

• Verify source level by monitoring Input Meter. Check that Input Routing and Input Sensitivity are set for optimal gain.

 

• Check that Output Attenuate is not set too low.

 

• Make sure loudspeakers are wired correctly to output connectors.

 

• Check that Output Configuration is set correctly.

 

• Check that Limiting parameters are set properly.

 

 

Unnatural sound

Check that all DSP functions (EQs, Limiter, Band Pass, Delay) are set appropriately.

 

 

Front panel is locked out, combination is lost

Use ControlSpace® Designer™ software to connect to the amplifier and unlock the front panel.

 

 

Fault LED is lit

Refer to Figure 21, “Fault Conditions” on page 38 for alarm conditions and potential solutions. Call your local Bose support

 

contact for assistance with unlisted or unsolvable faults.

 

 

 

USB is connected to PC but not found by

Unplug/replug USB connector.

ControlSpace Designer software

Reinstall USB driver.

 

• Restart PC, try again.

 

• Try another USB port on the computer.

 

• Try another USB cable.

 

• Check ControlSpace Designer software documentation for more details.

 

 

Ethernet is connected to network but amplifier

• Check the IP address of the PM8500N.

is not found by ControlSpace Designer software

• Ensure that there is not another device with the same address on the network.

(PM8500N Only)

• Ensure ControlSpace Designer is connected to the same subnet as the PM8500N.

 

 

• Try another CAT5/6 cable.

 

 

 

English

User Guide  Page 39

Page 39
Image 39
Bose PM8500N manual Troubleshooting, Problem Possible Solution

PM8500N, PM8500 specifications

The Bose PM8500 and PM8500N are high-performance amplifiers designed for professional audio applications. They are part of Bose's renowned line of amplification products that combine cutting-edge technology with user-friendly operation, making them ideal for venues like auditoriums, conference centers, and houses of worship.

One of the standout features of the PM8500 is its power output capabilities. The PM8500 delivers an impressive 850 watts per channel at 4 ohms, providing robust sound reproduction for large spaces. Its efficient Class D amplification ensures high performance with low distortion, allowing audio professionals to achieve crystal-clear sound even at high volume levels.

The PM8500N model enhances these features with advanced network control and monitoring capabilities. Integrated with Bose's proprietary AmpLink technology, the PM8500N allows for seamless integration within a digital audio network. This enables users to manage multiple units from a central location, making it easier to adjust settings, monitor performance, and troubleshoot potential issues in real-time.

Both models come equipped with a DSP (Digital Signal Processing) that includes various EQ presets and advanced audio tuning options. This feature allows users to optimize sound for specific environments or applications, ensuring the best audio experience possible. The built-in protection circuitry safeguards against overheating, short circuits, and overloading, ensuring reliable operation during demanding performances.

In terms of connectivity, the PM8500 and PM8500N models offer multiple input options, including balanced XLR and 1/4-inch TRS inputs, making them versatile for various audio sources. Additionally, they come with power-saving features, such as auto power down, further increasing their efficiency in energy consumption.

In summary, the Bose PM8500 and PM8500N amplifiers represent the pinnacle of professional audio amplification technology. With their powerful output, comprehensive connectivity options, advanced DSP features, and robust build quality, they are well-suited for any high-demand sound reinforcement application. Whether in a concert hall or a corporate setting, these amplifiers deliver reliable performance and superior sound quality, solidifying Bose's reputation as a leader in the audio industry.