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Whirlwind THS 4
Talkback Headphone Box


The Whirlwind THS 4 Talkback Headphone box is an all-purpose, fully loaded sports announcer console.
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List Price: $678.48
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Whirlwind THS 4
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The Whirlwind THS 4 Talkback Headphone box is an all-purpose, fully loaded sports announcer console. Both main and talkback microphone outputs are provided, with Mic On/Off, Cough and Talkback switches for control. The talkback output is line level with a trim control, and the main microphone output of Whirlwind's THS 4 will be live on-air (if power is lost) when using dynamic microphones.

There are two assignable inputs for the headphones with balanced and unbalanced connections. Each input can be assigned to left, right or both ears. The THS 4 left and right headphone amplifiers have individual volume controls that adjust the overall level in each ear. Headphones with impedances ranging from 30 to 600 Ohms can be driven to full volume.

The Whirlwind THS 4 has both main and talkback microphone outputs. A latching Mic On/Off switch connects signal to the main mic output. The switch is illuminated red when the mic output is live. 36 Volt phantom power is available if condenser mics are used. Onboard phantom power allows seamless switching when talkback is activated, and the switch to turn phantom power on and off is recessed to avoid accidental turn off. A momentary Cough switch silences both the mic out and the talkback out when depressed.

The momentary Talkback switch connects audio to the talkback output and mutes the mic out. The announcer’s microphone is sent through a preamp and line driver that deliver the signal to the talkback output at line level. There is a level control for fine adjustment of the audio sent down the talkback line. The Talkback switch illuminates green when depressed.

The headphone section of the THS 4 has two inputs. Each input can be assigned to left, right or both ears. Individual volume controls are provided for left and right ears, which adjust the overall level of any inputs assigned to that ear. Input signals can be either balanced mono or unbalanced stereo. A rear panel switch selects the proper mode. Both 3 pin XLR and ¼” TRS input jacks are provided for hookup flexibility. Power is supplied by a 12 VAC power adapter, Whirlwind's PS12AC1A (included).

Whirlwind THS 4 Talkback Headphone Box Includes:

  • PS12AC1A power adapter

Whirlwind THS 4 Talkback Headphone Box Features:

  • Separate left and right headphone amps with individual volume controls
  • Two headphone signal inputs can be assigned to either or both ears
  • Balanced or unbalanced inputs on XLR or ¼” TRS jacks
  • Passive Mic Out for on-air reliability
  • Mic output switching is completely silent
  • Active line level Talkback Out with level adjust
  • Mic On, Cough and Talkback switches for control
  • ¼” TRS or 3.5mm headphone jacks

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