Speck Electronics SSM - Manual (Page 34)

Chapter 4 Operation Section
This control acts as a master level adjustment for all eight stereo effects
returns and is normally set to its fully clockwise position.
In reality, there is no additional level available in the effects return
signal path. Unity gain, meaning no level lost or added, is obtained
when the Group Master Control is set to its fully clockwise position.
If the effects devices being utilized with the SSM are properly operated
at a professional input/output level of +4dbm, it would be acceptable to
adjust this control to the three o'clock mark. This will afford an
additional overall effects level boost when needed. Otherwise, set the
Effects Return Master Level Control to its fully clockwise position and
forget it.
The Effects Return Group Solo Switch permits an instantaneous In-place
solo of all eight stereo effects returns.
At times it is convenient to be able to listen to all of the effects returns
at once. This can be particularly useful if you are creating multi-
effects only patches.
As with all the solos on the SSM, only the monitor and/or headphone
outputs are affected. Effects returns may be individually muted or
unmuted even if the Group Master Solo is activated.
This is a convenient master mute function for all eight stereo effects
returns. When the Group Mute is activated, the Effects Return Group
Solo is unavailable. However, any individual effect return may be
soloed even if the Effects Group Mute is depressed.
This control adjusts the output volume to a dedicated tuning device (see
rear panel). The source for this output is either the sum of all signals
feeding the program master or any in-place solo or PFL signals.
If, for example, you need to tune only one synth module while others are
active, simply depress its associated solo or PFL switch and it will be
isolated to the tuner output.
There is ample gain available at this output so that even the softest synth
patches will trigger the tuners circuitry. Start by positioning the control
at the twelve o'clock mark, and adjust if necessary. 23. Effects Return Group
Master Control
24. Effects Return Group
Solo Switch
25. Effects Return Group
Mute Switch
26. Tuner Level Control
29
Master Section
Refer to Figure 5 for location of items 23 thru 43.