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When you’re dealing with outdoor warning for large are coverage TC-400 is your best choice for siren and voice announcement. The high power loudspeaker rated at 400W continuous and offers a sensitivity of 131dB at rated full power to provide clear voice and signal transmission. TC-400 environment-resistant high power loudspeakers are excellent performance standard for high-intelligibility voice and signal transmission for outdoor warning for community, industrial signal-system and public address. Cost effective, high-efficiency compression drivers to project sound over long distances or wide areas with fewer loudspeakers. The TC-400 is recognized throughout the world as "the performance standard" for high power siren and protective-signaling systems.