Speck XTRAMIXcxi, Reference Manual

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4. Low/ High Select Switch Low/High refers to the output operating level of the signal source. It
should be pointed out that the term Low/High has different meanings
from one manufacturer to another. For the Xtramix, the term low and
high refers to a medium strength line signal (-20dbu to 0dbu), and a high
strength signal (0dbu to+28dbu) respectively.
To optimize the input channels of the Xtramix, the Low/High select
circuit was designed to accommodate the wide range of audio signals
that would normally be plugged into this mixer. The Low setting would
be for most synth, samplers, and line level signals that tend to have a
lower output signal amplitude. The High setting is intended for high
output synths and samplers, or any high output audio signal. If you
intend to connect a +4 dbm source into the input channel, the Low/High
switch should be set to the High position.
If you find that the Input Level Control for that respective channel is
always being operated in the lower range, the Low/High switch should
be set to the High position.
Refer to Figure 8 for location of items 5 thru 13
This potentiometer adjusts the output level (to the outboard effects
device itself) of all channel signals routed to an Effects Send Master via
its associated channel's Effects Send Controls. When matched with an
effects unit that is properly operated at a professional input level of +4
dbu, the optimum setting for this pot is typically anywhere from 2 to 3
o'clock.
Each of the 8 effects send channels has a separate 1/4" TRS connector to
interface to the input of an effects device.
It is completely acceptable, from an electronic standpoint, to adapt this
connector to the input of any effects device, regardless of the type of
input connector utilized on the effects unit (unbalanced 1/4” TS, RCA,
XL, barrier strip, etc.)
This standard 1/4" TRS female phone jack allows the Effects or
Auxiliary sends from another mixer, be it a large frame recording
console or a rack mount sub-mixer, to be combined with the Xtramix's
Effects Sends. The purpose of this is to allow simultaneous access to
any effects device from both mixer sources, thereby creating one
integrated system as opposed to having to dedicate separate effects units
to each mixing source.
7. Effects Sum In Jack
6. Effects Send Jack
35
Effects Send
Connections and
Switches
5. Effects Send Master Control
Chapter 4 Operation Section