There are several ways to control the volume on a Bose speaker:
1. Use the physical volume controls on the speaker itself.
2. Use the volume controls on the device that is connected to the speaker, such as a phone or a computer.
3. Use a voice assistant, if the speaker has one built-in. For example, you can say “Hey Google, turn up the volume” if you have a Google Assistant-enabled Bose speaker.
4. Use the Bose Music app, if your speaker is compatible with the app. The app allows you to control the volume and other settings of your speaker from your phone.
If you are using a Bose SoundTouch speaker, you can also use the SoundTouch app to control the volume.
I hope this helps! Let me know if you have any other questions.