User guide
664 User Guide and Technical Information
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Whenever the on-screen keyboard is displayed, an a ached USB keyboard can be used to enter data.
The table below showa the keyboard shortcuts available.
Key Combination Action
F1 Accesses the Setup Menu.
F2 Accesses the Take List.
F3 Switches between Main Screen and RTN Screen.
Menu Button Accesses the Setup Menu.
Ctrl + R Record
Ctrl + S Stop
Spacebar Play
Left Arrow
Main Screen: Rewind.
Input Settings Window: Toggle phase inversion.
Right Arrow
Main Screen: Fast Forward.
Input Settings Window: Toggle LR Mix assignment.
Up / Down Arrows
Main Screen: Adjusts headphone volume.
In menus: Moves highlighter.
While editing parameters: Changes value.
Enter
Main Screen: Accesses HP Monitor Source List.
In menus: Same as encoder push (activates current selection).
Alt + Enter Main Screen: Toggles arming of selected track.
Ctrl + Enter Accesses gain adjustment for highlighted L, R, X1, X2, or RTN track.
Ctrl + Up / Down Arrows
Main Screen: Select tracks.
Input Settings Screen:
Ctrl + Left Arrow Input Settings Screen: Change X1 assignment.
Ctrl + Right Arrow Input Settings Screen: Change X2 assignment.
Mixer Linking
Linking the 664 With Another 664 or 552 Mixer
The Link I/O function allows the 664 or 552 to be interconnected with another 664 or 552 mixer for
applications requiring more inputs. When the 664 is linked with a 664 or 552, all inputs appear at both
mixer’s outputs. The stereo mix from the other mixer will be routed to the 664’s stereo Master Bus and
recorded on tracks L and R. Return audio and PFL occur on the headphone output of both mixers. The
Link I/O connector is an unbalanced TA5M wired pin-1 = HP L, pin-2 = HP R, pin-3 = Mix R, pin-4 =
Mix L, pin-5 = link detection/ground.
To Link the 664 to another 664 or 552 mixer:
1. Connect the Link I/O of the 664 to the Link I/O of the other 664 or 552 mixer using a TA5F
to TA5F cable (Sound Devices XL-TA55 optional accessory). This will send the stereo mix of
each mixer directly to the stereo output bus of both mixers.
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2. Monitor the stereo sum of all input channels from either mixer headphone monitor.
3. Adjust the levels on each mixer accordingly.