Brand: BIC America. MPN: WTR-SYS. The 4-channel BIC WTR-SYS wireless transmitter/receiver kit makes it easy to connect your powered subwoofer(s) and powered speaker(s) wirelessly. External antennas assist in offering a range of 80’ unobstructed and up to 60’ obstructed with no interference delay or drop outs. Eliminate the need to run expensive long bulky cables & wires. Place your subwoofer and powered speakers where they look and sound best with no front to back of room cables or wires. Connect the W-Transmitter to your A/V receiver PC Mac mobile device TV or any product with 1/8” (3.5mm) or RCA connectors and send a signal to any powered speakers in your home. (Note: for powered speaker hookup you’re A/V receiver must have variable pre-amp out RCA jacks). Super compact size and self-adhesive Velcro strips enable multiple placement options. With set-up in just minutes you will immediately enjoy CD quality sound from your patio second audio zone or anywhere you’d like! 4 SELECTABLE CHANNELS- When you install additional WTR-SYS wireless kits you can play up to four separate selectable wireless channels or zones. Set your first WTR-SYS transmitter and receiver to channel #1 for wireless subwoofer(s). Then set your second WTR-SYS transmitter and receiver to channel #2 and add wireless powered surround speakers. Add up to four WTR-SYS transmitter/receiver kits to play different channels and audio zones throughout your home! ADD ADDITIONAL POWERED SUBWOOFERS & SPEAKERS TO THE SAME WIRELESS CHANNEL! – Extend your bass and add more wireless BIC powered subwoofers to your WTR-SYS system with the purchase of additional BIC W-Receivers. Set your second W-Receiver to the same wireless WTR-SYS channel that your first subwoofer is set on. Enjoy 5.2 sound from a 5.1 receiver 7.3 sound from a 7.1 receiver or 9.4 sound from a 9.1 receiver! Or play what’s running in your living room or basement in any other area in your home.