The award winning Omnispeakers from TIC Corporation are the most experienced, tried, tested and proven exterior ground speakers available. The GS50 Pro Sub Woofer model is a specially improved professional version of this famous speaker. A 250W passive sub woofer with the ability to operate two satellite speakers for a full range professional exterior speaker system. OmniSpeakers are Teflon sealed with improved impact resistant and lower resonance cabinetry. An integrated in-line, "on-the-fly", switching constant voltage distribution transformer. A twist-removable lid for ease of installation and adjustment with a weatherproof speaker driver. From the worlds most famous theme parks and hotels to your backyard. The best value for money exterior Omnispeakers available just got a whole lot better!