The Whirlwind THS series of sports announcer boxes combine high quality headphone amplification with various microphone control options in rugged metal desktop chassis. THS boxes are ergonomically designed to put the control buttons within easy reach of the announcer even while shuffling through stat sheets.
The THS-1 Talkback/Headphone boxes are configured with a single momentary switch to control the microphone output. The THS-1T has a Push to Talk switch. The THS-1M has a Push to Mute switch. There is no talkback output. Headphone inputs consist of balanced left and right inputs on separate female XLR connectors. Asingle front panel volume control adjusts the level of both the left and right earpieces. Another balanced mono Aux input is provided that feeds left and right ears equally. The Aux input has its own volume control.
The microphone output of the THS-1 boxes is a passive, straight through connection from the microphone input. This configuration ensures that the microphone will still be live on-air, even if power to the THS-1 box is lost. Phantom power can also be supplied to a condenser microphone through the mic output from the broadcast audio mixer.
The headphone amplifiers are designed to deliver powerful, undistorted audio that can be heard over an arena full of screaming fans. Headphones with impedances ranging from 30 to 600 Ohms can be driven to full volume. Most announcer headsets fall between 100 and 600 Ohms. Headset connections are made through a 3 pin female XLR for the microphone and both ¼" and 3.5mm TRS jacks are provided for the headphones.
Power is supplied by a 12 VAC power adapter, included with the unit. A power switch is located on the front panel, along with a green LED that indicates that power is on.