ELTEM / PROPA-U100 / Directional Loudspeaker, Super Directional Speaker, Ultrasonic Speaker, Directional Sound System for Museums, Exhibits, Art Gallery and Digital Signage – Black : Amazon.ca: Electronics
In Phase Car Audio XTC69.3 400W 6x9" XTC Series 3-Way Coaxial Speaker System, Directional Rotary Tweeter, Easy Install : Amazon.co.uk: Electronics & Photo
Dingsun Bi-Directional 4-Way RCA Stereo Audio Switch Dignsun Audio Signal Source Switcher Selector Splitter Box for CD, DVD, Blu-ray Players, Active Speakers, Etc. (4 Input 1 Out /1 Input 4 Output): Amazon.co.uk:
ic audio DA P 20 – 160/20173235 T-Shirt EN54 Speaker, 20 W, 100 V, White : Amazon.co.uk: Electronics & Photo
PROZOR RCA Splitter 4 Way Bi-Directional RCA Switch with Volume Control and Switch Button RCA Stereo Audio Selector with No Power Supply Needed 4(1)-in-1(4)-out Mini Switch for Speaker Amplifier DVD: Amazon.co.uk: Electronics
8" Ceiling Speaker With Directional High Frequency Tweeter: Amazon.co.uk: Computers & Accessories