I first looked for a wireless subwoofer kit and didn't even think of looking for a regular (full spectrum) wireless audio adapter. Then I bought this Audioengine W3. This is exactly what I needed to share a home theater subwoofer with KRK VXT4 mantle speakers. The W3 adapter doesn't need to be configured, just plug it in and they're paired. One of them is marked as the sender and the other as the recipient. The sub sounds great, I see no difference to the cable. The USB plug comes in handy as I already have USB ports on the back of my home theater equipment so I have less cable clutter if I don't need to plug in another power supply. Now that I think about it, wireless kits labeled for subwoofers are labeled as such for marketing purposes only, since any (high quality) kit that transmits the full audio spectrum, like this one, will transmit sub-frequencies.
ARESGAME AGK850 - 850W Fully Modular 80Plus Gold Certified Power Supply Unit
32 Review
500W PSU With 80 Plus Bronze Certification For Efficient Power Supply
37 Review
Upgrade Your Desktop'S Memory With Timetec 32 GB DDR4 2400MHz RAM - Non-ECC, Unbuffered, Dual Rank, 2Rx8, 288 Pin UDIMM - (32GB KIT(2X16GB))
36 Review
2-In-4 USB 2.0 Switch Box - SGEYR Metal, One-Button Swapping & 2 Pack A To A Cable For Printer/Mouse/Scanner Sharing Between PCs
39 Review
AUNA Connect 150 Black 2.1 Wi-Fi Internet Radio Music Player With MP3 USB Port, AUX & Remote Control - Black
16 Review
Radio receiver Max MR-322 anthracite
14 Review
KLIM CD Boombox Portable Audio Player with FM Radio, Rechargeable Battery, Bluetooth, MP3, AUX, Neodymium Speakers, and Upgraded CD Laser Lens (2021 Edition)
11 Review
Sangean PR-D4W Portable Weather Alert Radio with AM/FM Bandwidth Narrowing and Auto Tracking for Improved Searchability
12 Review