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Bose S1 Pro+ Portable Bluetooth® Speaker System

Sold from 2023 – present

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Enable/disable the Expanders setting

The Expanders setting determines whether the system reduces the volume of low-level background noise for a channel, such as noise caused by electrical feedback, radio frequency interference, or your environment. You can disable this feature for one or more channels if necessary for your setup scenario.

To enable or disable the expander setting:

  1. Press and hold one of the channel controls until the additional controls menu appears on the channel display.
  2. Rotate the channel control to highlight Expanders, then press to select it.
  3. Rotate the channel control to highlight your preferred setting, then press to select it:
    • On (default): Enables the Expanders setting for this channel, causing the system to reduce the volume of low-level noise
    • Off: Disables the Expanders setting for this channel, preventing the system from reducing the volume of low-level noise
  4. Press and hold the channel control until the additional controls menu disappears
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