Solid State Logic SSL 12 USB Audio Interface - Manual (Page 17)

This is where you can create independent mixes for HP A, HP B and Line 3-4
Outputs.
The Green Knob controls the set level for each Mix Bus (HP A, HP B &
Outputs 3-4)
MUTE button mutes the send and illuminates red when activated.
The Pan control allows you to determine the pan position for that send. The
PAN button must first be engaged.
If PAN is not engaged, then the send follows the main monitor bus Pan
control in the fader section.
Tips:
Shift + Mouse Click sets a send to 0 dB.
Alt + Mouse Click (Mac) or Option+Click (Windows) sets a send to Off.
3. Line 3-4 Sends
Similar to the headphone sends, the Line 3-4 sends allow the signal to be routed to
Outputs 3-4. When the output channel is stereo linked, a single set of controls for
Pan, Level and Mute are controllable.
When the output channel is split into dual-mono, independent level controls appear,
one for Output 3 and one for Output 4.
4. Scribble Strips
These are the text boxes on each channel identifying its input/output type and
number order as default. These text boxes are editable, allowing each channel in
the 360° mixer to be renamed by the user.
To re-name the Scribble Strip on the channel, simply double-click on the text box
and type your preferred name.
5. Pan
The Pan control determines the position of the signal in the Monitor Bus stereo
image.
6. Faders
The Fader section of the mixer allows control of the signal going out to the Monitor
Bus & consists of 4 control parameters.
Pan Knob as previously described.
Solo button, soloing the channel in the Monitor Bus. This illuminates yellow
when activated.
Cut button mutes the channel to the Monitor Bus. This illuminates red when
activated.
Fader control the level, with a range from +12dB to -Infinite dB being sent to
the Monitor Bus.