Speck Electronics Xtramix - Manual (Page 24)

When the Subgroup Assign Changeover Switch (see below) is in the up
position, pressing the 3-4/7-8 Assign Switch routes the input channel
signal to the 3-4 subgroup pair. When the Subgroup Assign Changeover
Switch is in the down position, pressing the 3-4/7-8 Assign button routes
the input channel signal to the 7-8 subgroup pair. In the up position, all
signal flow to the 3-4 or 7-8 subgroups is muted.
In the up position the Subgroup Assign Switches will select subgroups
1 thru 4. When depressed the Subgroup Assign Switches will select
subgroups 5 thru 8.
This green LED will illuminate when a signal is present at the left or
right channel. This provides for easy identification of an active synth
even when a channel is unassigned (muted) and sound is inaudible.
This yellow LED illuminates when the channel's effects Stereo/Mono
switch (See rear panel description) is depressed. This indicates that the
left and right signals are being summed together creating a mono
composite for the effects sends.
There are two Effects Send Controls available per input channel in the
form of a black capped dual concentric potentiometer. The smaller
(inner) knob is labeled as the "Odd" effects send and the outer (larger)
knob is labeled as the "Even" effects send.
Each send can be selectively assigned to one of four effects busses,
"Odd" (1/3/5/7) and "Even" (2/4/6/8). This is accomplished by the
selection of the four black Effects Assign Switches.
Each stereo channel also incorporates an effects Stereo/Mono switch
(located at the rear). When this switch is in the Mono position, the
source for effects sends 1 thru 8 is the algebraic sum of the left and right
synth signals, post (after) the input level control. When the Stereo/
Mono switch is in the Stereo position, the source for odd effects sends
(1,3,5,&7) is the left synth signal, and the source for the even effects
sends (2,4,6,&8) is the right synth signal.
The effects sends are designed to operate only when a Subgroup Assign
Switch is depressed.
6. 3-4/7-8 Subgroup Assign/
Mute Switch
7. Assign Changeover Switch
8. Presence of Signal LED
9. Mono LED
Effects Send Section
19 Chapter 4 Operation Section