My son built me a computer. The sound is not loud enough for my aging woodworker's ears so I rummaged around and found some old Labtec speakers. They required four C Cell batteries. I left the speakers on all the time. The batteries lasted less than a month. I had assumed the speakers would draw little or no power while not in use. The batteries have a date of 2022 on them and have been in the drawer a while. I installed a second set, but those have been here a while also. I am trying to turn the speakers off when not in use, but that ain't happening on a regular basis.
So, the question is, do more modern speakers draw their power form the computer and not need batteries? What alternatives are there?