Using ceiling speakers in the MLL

To simplify the use of MLL 267a for teachers, we've installed speakers and an amplifier in the ceiling. Its projector/speaker setup is similar to the ones in MLL 257 and EOP 269.

1. Both the speakers and headset are plugged into the teacher's station. Please
DO NOT remove anything. Switch between sending the audio to the USB headset or
the ceiling speakers via the Sound control panel or the sound menu (below).

2. A student's laptop should NEVER be hooked up to the built-in projector and
speakers using the cables going into the teacher's station. This is difficult, disruptive, and completely unnecessary. To project a student file, open it on the teacher's station via a USB flash drive.

3. When playing sound through the ceiling speakers, lower the volume of the source initially and increase as necessary. The ceiling amplifier is set on 90% of maximum volume to accommodate weak signals, but a strong signal source played at full volume may blow
someone's scarf off.