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Description of Controls
78 X2 Reference Manual
Master Controls
Oscillator Frequency and Level
The built-in Oscillator provides reference tone with a variable output level. The two
switches are used together to determine the Oscillator’s frequency between 10 kHz,
1 kHz, 100 Hz and OFF.
Top Switch
Up Down
Bottom
Up
OFF 1 kHz
Switch
Down
10 kHz 100 Hz
10 kHz tone is used to lay tones on a tape so it can be adjusted for azimuth and
frequency response at another studio. 1 kHz is the industry standard level reference
tone. 100 Hz can be used to check low frequency response.
Use the knob above the OSCILLATOR switches to adjust the oscillator’s level.
SOLO LED and Level
If any SOLO, AFL or PFL button is pressed anywhere on the console, the SOLO LED
will light indicating that the Control Room is receiving signal from the Solo buss
instead of the Control Room Source switch (see below). Please note that if SOLO is
engaged on a Channel that has no signal in it, you will hear nothing in the Control
Room until SOLO is turned off on that Channel.
The SOLO knob sets the level you will hear in the Control Room when SOLO is
pressed. Typically it is set a little above unity gain (about 2 o’clock), so that a single
instrument will sound about as loud in the Control Room as the entire mix does,
allowing you to focus. The SOLO signal from the channels and Aux Returns are
stereo, coming from post-fader, post-pan. The PFL signals from the Groups and the
AFL signals from the Aux Masters are mono.
Studio Level and Assignment
The STUDIO knob sets the overall level of the STUDIO outputs. Note that it does
not affect the level of Talkback to the Studio or Groups, which is set by the Talkback
Mic Level control alone (see below).
The Studio Assignment consists of two switches: CONTROL ROOM and AUX 1-2.
When CONTROL ROOM is down, the Studio is sent the same signal appearing at
the Control Room outputs. When the AUX 1-2 switch is down, the Studio is sent the
signal at the AUX SEND 1 and 2 outputs.
Talkback Level and Assignment
The Talkback Level knob sets the output level of the built-in Talkback mic. Two
assignment switches are located directly beneath it: SLATE and STUDIO. When
SLATE is down, the Talkback mic is routed to the Group outputs, so you can record
an announcement on the multitrack. Note: To record an announcement onto the
mixdown tape deck, you must also assign the Group to either Left or Right (or