Audio Monitoring - 5.1 Mix Room

The iMac has built-in speakers, a built-in microphone and a MOTU 16A audio interface.

Most applications are configured to use the MOTU 16A audio interface.

Grace m906 Monitor Controller

The Grace m906 monitor controller is used to select audio sources and to adjust the volume.

Main Volume Knob

• The big silver knob on the lower right is used to set the volume.
  • Double click the main level knob
    • This will set the volume to 65dB
    • adjust as needed

Analog Input Buttons

• On the top left are the analog input select buttons:
  • CPU = MOTU 16A audio interface
  • Blu-Ray = Blu-Ray player
  • Mixer = Small mixer on top of the equipment rack

Channel Solo/Mute

• The channel solo/mute buttons can be used to solo or mute specific channels.
• The solo/mute button on the right sets the mode.
  • When green, the buttons are in Solo mode.
  • When red, the buttons are in Mute mode.
• Press the channel buttons to solo or mute a specific channel.

Speaker Select Buttons

• On the lower right are the speaker select buttons
  • 1 = Yamaha receiver
    • Audio will play through the speakers selected on the Yamaha receiver.
  • 2 = Nearfields
    • Audio will play through the speakers on the computer desk

Other Buttons

• Mono: press down to monitor in mono.
• Dim: pressing the button lowers the volume by 20dB
• Mute: turns the volume all the way off.

Switcher

• The video switcher selects the source for the data projector and changes the input of the Yamaha receiver.
  • HDMI = CBL/SAT
  • VGA = CBL/SAT
  • iMac = CBL/SAT
  • CCAM = CBL/SAT
  • VCR = CBL/SAT
  • Blu-Ray = DVD

Yamaha Receiver

Inputs

• Selecting iMac on the Switcher will set the Yamaha to Multichannel Input.
  • This will pass any Mono, Stereo, or 5.1 audio out to the speakers.
  • If audio is not coming out of the speakers, press the "Multi CH Input" button on the Yamaha Receiver.

Speaker Select

• Two sets of speakers are powered by the Yamaha
  • A = the small surround sound speakers
  • B = the large JBL speakers
• There is a very tiny A or B letter that appears in the middle left of the Yamaha display
• Both sets can be on simultaneously.
• Only select one set.