Sound Devices 664 - Manual (Page 30)

COM Setup
The 664 features an unbalanced stereo COM Send (TA3) and an balanced mono COM RTN (TA3) for
communications purposes. These special input and output channels can be used to privately com-
municate with a boom operator or other member of the production crew.
During operation, it is possible to interrupt the Com signal and speak to the boom operator via the
slate mic by Holding down the Select Encoder and sliding the Slate/Tone Switch to the left. The
green Slate LED will illuminate to indicate that the slate mic is routed to the Com Send. During this
time, the slate mic signal is sent only to the Com Send Output and right Headphone output, but not
to record tracks or any other outputs. To cancel slate communication and resume the Com Program,
slide the Slate/Tone Switch to the left again. The green Slate LED will turn off.
The gain of the Com Send and Com Return can be adjusted from the Setup Menu options
COMMS/RETURNS > Com Send Gain and COMMS/RETURNS > Com Return Gain, respectively.
COM Send Program
By default, the program sent to the COM Send output is the Left and Right Stereo Bus. To change the
program of the COM Send:
1. Enter the Setup Menu and select COMMS/RETURNS.
2. Select the Com Send Program Option.
3. Turn the Headphone Encoder to select the desired source, and press the Headphone Encoder
to toggle the assignment of the source to the Left or Right side of the COM Send.
4. Optionally, slide the RTN switch to toggle mono or stereo of the COM Send.
Com Program Auto-Mute
By default, the Com Send program will mute when slate communication is engaged. This helps
the boom operator hear the voice of the 664 operator. This behavior can be disabled so that the
Com Send program is not muted when communication is engaged via the Setup Menu option
COMMS/RETURNS > Program Auto-Mute.
664 User Guide and Technical Information
v. 2.02 Features and specifications are subject to change. Visit www.sounddevices.com for the latest documentation.
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