Privacy

Since this is a privacy-oriented, it may be possible to disable Bluetooth permanently by modifying the speaker. These options are risky, and could easily result in a non-functional speaker.

Option 1 is to disable the pairing button. If it's a rubberized button with the contact pressing on the circuit board, you can put electrical tape over that portion of the board. For touch sensors, you could try removing the wiring, but you risk disabling all buttons.

Option 2 is to disable the Bluetooth. You can attempt to remove the antenna or possibly just cutting the traces (metal lines) of the antenna. If you can identify a separate Bluetooth chip, see if you can remove the power to the chip. That could be as easy as desoldering the input pin and lifting it off the pad slightly, or cutting the trace entirely.

if youre fine with it, you can just buy a portable bluetooth speaker and not use the bluetooth. many of them work with aux and dont turn on bluetooth until you press the pairing button

A little more information would be useful - what are you trying to accomplish/resolve?

Every BT speaker I've had can be used with a cord, and requires pressing a button to pair with BT, so the BT is effectively disabled unless I physically enable it.

They used to, but I'm not sure they are really made anymore. Maybe some bottom-of-the-barrel stock?

If you're looking for good audio quality, might be easier to just get whatever BT speaker and remove/burn out the Bluetooth chip or remove the antennas

Glad you asked! I still own this little gem:

The quality is good for such a small speaker and the battery life is still amazing. I bought it when bluetooth speakers were already a thing, but it does not have it. The company does not exist anymore, don't even bother checking the website. Except on archive.org

Yes, they exist but they aren't commonly made anymore so you will have to look for used speakers. I'd also suggest to look at old boomboxes which often have an aux input while the older models don't have any bluetooth.

The original V1 Minirigs are wired only. Probably hard to find but they're great speakers.

Look for professional music equipment. PA systems, for example. Many guitar amps as well, though guitar amps are sometimes very much guitar only, but other times they are reasonably good full-range speakers.

Though make sure you read closely, often times Bluetooth is available. Either it is included or it's an extra cost cost.

Some Bluetooth speakers also have a line in so you may be able to find one and just not use Bluetooth.

I know The Soundcore Motion+, in particular, has a 3.5mm audio jack. I'm not sure about other brands/models. Not sure if that would be an option for you.

I doubt it, because there was no reason for them to exist before wireless connectivity. So, every battery-powered portable speaker with an amplifier was designed to be wireless.