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L1 Model 1S

Sold from 2025 – present

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No audio from product

If your product seems to be set up properly but does not produce sound, try the following:

Be sure the system is set up properly and all connections are secure.

A connection may have come loose or may be connected incorrectly. For more info, see Setting up your product.

Be sure the problem occurs only with the effects processor.

If the system is not playing sound from the source, see No audio from product.

Check the volume level of the Bose system.

Be sure the system volume is not turned down. Using the volume control, gradually increase the volume level.

Be sure the levels are set properly.

If levels are not set properly, performance will suffer. Follow these guidelines when setting levels:
  • Check the signal LED to be sure the input trim level is sufficiently set. The LED should be solid green, indicating a strong signal
  • If the LED is not solid green, increase the input trim level, stopping before the LED is red
  • When the input trim level is correct, increase channel volume and master volume to the desired levels

Be sure the system is set up properly.

A connection may have come loose or may be incorrect. Check all connections. For information on connecting the L1 system, see Setting up your product. For information on connecting a T1, see Connecting a ToneMatch mixer.

Be sure the levels are set properly.

If levels are not set properly, performance will suffer. Follow these guidelines when setting levels:
  • Check the signal LED to be sure the input trim level is sufficiently set. The LED should be solid green, indicating a strong signal
  • If the LED is not solid green, increase the input trim level, stopping before the LED is red
  • When the input trim level is correct, increase channel volume and master volume to the desired levels
For information on LED status, see Understanding LED indicator status lights and information. For informatoin on setting levels, see Gain Staging and Setting Input Levels.

Be sure the L1 system power is on.

Check the power LED. If it is orange or red, see Product will not turn on for the L1 system.

If using a B2 bass module, make sure the Bass Level switch is set properly.

On the back of the bass module, check that the Bass Level switch is set to the desired position.

Reset your system

A reset is used to correct occasional product issues. It is not something that a product should require repeatedly. For more info, see Resetting your product.

Replace the input cables.

Try different input cables using the same source and same channel. If this solves the problem, the original cables may be defective.

Plug in a different audio source.

Connected a different audio source to determine if the issue is related to the source: If audio is being sent to your system from a a microphone, try a different microphone; if an instrument is connected, try a different instrument.

Condenser microphones are not compatible with this system.

Condenser microphones require power that this system cannot provide.

For condenser microphones, turn on phantom power.

Condenser microphones require phantom power to operate. If phantom power is off, turn it on. (Tip: You might hear a pop when phantom power is applied. To avoid a popping sound, turn down the system volume while applying phantom power.)