Performance: The TT-1 has two applications. It was designed to be a portable master station for a compact IFB system, but may just as easily be used as a beltpack in an intercom system with the facility to inject program material onto the intercom channel to which it is connected.
Whether the program material is a local audio source or an IFB feed from the station, it is inserted via the combo XLR/žin. jack on the rear panel. Connection to the IFB packs or intercom system is made at the female 3-pin XLR on the rear panel.
A 4-pin male XLR is provided for connection of a standard intercom headset with a dynamic microphone. A modification to allow use of a headset with an electret microphone is available. Control of the level of the program material to be heard in the system is by a rotary control on the front panel. A true VU meter (LED-type) is provided on the front panel to monitor the program input. The leds are bright and easily visible in daylight. Control of the user's headset volume is by a thumbwheel.
A green LED confirms that the TT-1 is receiving DC voltage from the intercom or IFB power supply. When used as an intercom beltpack, power will be provided by the intercom system's power supply. When used as an IFB mini-master, power will come from the IFB power supply. When used as a mini-master in a portable stand-alone IFB system, power will come from an AC adapter through an accessory which regulates and filters the power for ultra quiet operation. (See data sheet for IFB-On-the-Run).
The talk button is momentary in stock form, but can be modified to be latching. A separate button allows the user to choose to talk over the program material, or to interrupt the program material while the talk button is pressed. Production Intercom users will recognize the sound quality of the communications audio. The pass-through of the program material is also clean and wide enough in frequency response to be listenable for long periods.
Size: 3.70 x 4.30 x 2.50 in. 93.98 x 109.22 x 63.5 cm
