12V Trigger Out and a TV lift

S T E R E O A M P L I F I E R / A U T O M A T E D S W I T C H E R

Example 2: In-Wall Volume Control With a Fixed Output Device

In some applications, it may be desirable to control speaker level of both the whole-house sources and the TV, or perhaps a local CD or DVD player that might not have a variable output, with the in-wall volume control. In this application, the vol- ume control would be connected to the output (SPEAKER OUT) of the TVA50 and the fixed line level output of the TV or local device would be used.

NOTE: If driving speakers and using volume controls on both SPEAKER OUT A and B, minimum acceptable impedance is 4 ohms. Be sure to check speaker specifications and impedance magnifying settings on the volume controls to assure proper per- formance. Exceeding this load will cause the TVA50 to go into pro- tection and shut down.

12V Trigger Out

The TVA50 has a 12VDC 200mA Trigger OUT that will be acti- vated in the current sense mode or when 3-30V AC/DC is detected on the Trigger IN terminal. This Trigger OUT voltage can be used to control 12VDC controlled devices such as drapes, screens and TV lifts.

In certain exotic applications, it is desirable to keep all compo- nents hidden from sight when not in use. A TV mounted in a lift cabinet is a perfect example. When not in use, the TV is hidden away in an attractive furniture quality cabinet. A motorized lift mechanism will raise the TV up out of the cabi- net for use when activated by voltage, IR or RF commands.