Too Much A Novice To Ask This On Electronics forum

MEXICOWANDERER wrote:
Conversion to wireless sound?

BLUETOOTH

I realize a little chip can allow a PC or laptop to broadcast a bluetooth signal.

Does another gizmo exist that will turn an amplified speaker into a wireless speaker? Like a Polk 10" subwoofer?

Yes.

What you need is a BT TRANSMITTER for your audio source (phone, tablet, laptop stereo, ect).

Then you need a BT RECEIVER for the device you are sending the audio to like a speaker.

Amazon search for BT transmitter

Note, some of these may transmit only and some transmit/receive, you will need to read the descriptions closely before buying.

Personally, for the hassle and the poor quality of BT I would just find a way to run some speaker wire to your subwoofer. BT was never intended for "High Fidelity" nor is it "robust" from interference and can have "pairing issues".

I can always tell when someone is using a BT handsfree headset on their phone..

A simple wire works 100% of the time with no loss in fidelity or interference.