1. Lighting. See Three-fer.
2. Sound. A loudspeaker with discreet drivers for High, Mid, and Low frequencies. See triamp.
3. Electrical. A type of switch allowing for a fixture to be controlled from two locations; for example, a light over a staircase with two switches, one at the top and one at the bottom.
2. Sound. A loudspeaker with discreet drivers for High, Mid, and Low frequencies. See triamp.
3. Electrical. A type of switch allowing for a fixture to be controlled from two locations; for example, a light over a staircase with two switches, one at the top and one at the bottom.
