Whirlwind THS 4 Talkback Headphone Box

Whirlwind THS 4 Talkback Headphone Box

The THS 4has both main and talkback microphone outputs. A latching Mic On/Off switchconnects signal to the main mic output. The switch is illuminated red when themic output is live. Two types of onboard condenser microphone power areavailable, enabling seamless switching when talkback is activated. A three wayswitch selects either phantom or “T” power and is recessed to avoidaccidental turn off. A momentary Cough switch silences both the mic out and thetalkback out when depressed. The momentary Talkback switch connects audio tothe talkback output and mutes the mic out. The announcer’s microphone is sentthrough a preamp and line driver that deliver signal to the talkback output atline level. There is a level control for fine adjustment of the audio sent downthe talkback line. The Talkback switch illuminates green when depressed.

Theheadphone section of the THS 4 has two inputs. Each input has a volume controland dip switches to send the signal to the left and/or right headphoneearpieces. When an input is assigned to both ears, level adjustments affectboth left and right ears equally. Input signals can be either balanced mono orunbalanced stereo. A rear panel switch selects the proper mode. Both 3 pin XLRand ” TRS input jacks are provided for hookup flexibility. Headphones withimpedances ranging from 30 to 600 Ohms can be driven to full volume.

Power issupplied by a 12 VAC power adapter, model PS12AC1A, included with the unit.

Key Features

• Two linelevel inputs with individual volume controls
• Input Assignswitches route inputs to either or both ears
• Balanced orunbalanced inputs on XLR or ” TRS jacks
• Passive MicOut for on-air reliability
• Mic outputswitching is completely silent
• Active linelevel Talkback Out with level adjust
• Mic On,Cough and Talkback switches for control
• 1/4” TRS or3.5mm headphone jacks
• PS12AC1Apower adapter included