Bose L1 Model I Operations Instructions download pdf (Page 20)

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ARE AND MAINTENANCE

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With nothing plugged into

the power stand, a slight

hum or buzz is heard

• Using an AC outlet tester, test the AC outlet that the power stand is plugged into for

reversed or open (hot, neutral, and/or ground) contacts.

• If using an extension cord, make sure that the cord is also tested as above.

B1 or B2 bass module is

plugged in, but no bass

audio is heard

• Make sure you are using the included 4-wire B1/B2 bass module cable.

• Make sure the B1 or B2 bass module cable is plugged into the Bass Module Out

connector

and the cable plug is fully engaged in the connector.

• Try a different 4-wire cable.

• If available, try a different B1/B2 bass module.

B1 bass module sounds

out of balance with the

system

• Make sure you are using the B1/B2 bass module 4-wire cable included with the B1 bass

module package.

• Make sure that the B1 or B2 bass module grille is facing forward toward the musicians

and audience.

No mid/high sounds heard

from the L1

top array

• Make sure the L1 top array and bottom extension are firmly seated in their connectors.

• Make sure connections are not bent or broken.

• Try cleaning the contacts on the loudspeaker top and bottom with electronic contact

spray cleaner.

Instrument or audio source

sounds distorted

• Make sure the Signal/Clip LED is not constantly red. If it is, lower the trim level.

• Try a different source or instrument.

• Try your source or instrument on another power stand.

Microphone is 

encountering feedback

• Orient the microphone so that it is not pointing directly at its respective L1 system.

• Try a different microphone.

• Try a different position for the loudspeaker and/or vocalist on stage.

• Increase the distance from the loudspeaker to the microphone.

• If using a vocal effects processor, make sure it is not contributing to the feedback 

problem.

Problem What to do

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Bose L1 Model I Operations Instructions Page 20

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