Specifications

7
Operating Manual - MX-508 Stereo Microphone/Line Mixer
5.10 Sub Outputs
These outputs are generally used to feed another
mixer's Sub Inputs for expanded input capacity. The Main
left and right submaster outputs use unbalanced (mono)
1/4" connectors. The Aux submaster outputs use 1/4" TRS
connectors with Aux 1 on the tip and Aux 2 on the ring.
5.11 Mono Output
This output is a function of the Mono Level Con-
trol, which is a pre-Master summed output from the left
and right mix busses. Like the main outputs, it is pseudo-
balanced with a nominal level of +4dBu.
5.12 Sub Inputs
These inputs are useful for linking together two
or more mixers for expanded input capacity, and include
Main left, Main right, and Aux 1/Aux 2. Signal to the
Sub Inputs is taken from the Sub Outputs of another mixer,
with a nominal level of +4dBu. The Aux submaster input
requires Aux 1 on the tip and Aux 2 on the ring.
5.5 Aux Send Outputs
The Aux Outputs are used to
drive monitors, effects processors, re-
cording devices, or any function
which requires isolated level control
from the main outputs. They are
pseudo-balanced 1/4" tip-ring-sleeve.
5.6 Aux Return Inputs
The return inputs are 1/4" un-
balanced. Return 1 is stereo with a
left and right input, while Return 2 is
mono. To use return 1 as mono, con-
nect only to the Right return 1 input.
5.7 Tape/CD Input - Tape Output
The stereo inputs on RCA
connectors have a nominal operating
level of -10dBu to match most tape
decks and CD players. The tape out-
puts are -10dBu "pre-master", so they
are not affected by the settings of the
Main output controls.
5.8 Transformer Balanced Outputs
The transformer outputs use
male XLR type connectors and pro-
vide total isolation for 600 ohm lines.
Pin 1 is ground, pin 2 is (+), and pin 3
is (-). These outputs are controlled
by the Left and Right Master levels,
with a nominal operating level of
+4dBu.
Note: The transformer-balanced outputs are de-
signed to drive up to +24dBu into 600 ohm loads. Be-
cause of the nature of an output transformer, the output
level increases as the impedance of the terminating load
becomes higher than 600 ohms. Whereas a "direct-
coupled" output stage like that of the transformerless out-
puts will not change as the load changes, any transformer
used in an audio path is affected by its termination im-
pedance. Since line level inputs on audio devices are
typically 10K Ω or higher, expect a slight increase (2.5dB)
in output level when driving high impedance inputs with
the transformer outputs. The output meters will remain
accurately calibrated to the levels present on the
transformerless outputs, regardless of the load on the
transformer outputs.
5.9 Main Outputs
These Main Outputs are also controlled by the
left and right master. They are 1/4" pseudo-balanced TRS
jacks with a nominal operating level of +4dBu into any
load.
C
h
Pa
d
o
f
ot
Aux 1
Send
Aux 2
Send
Return 2
Tape/CD
Input
Tape
Out
-R--L-
Return 1
Right
(Mono)Left
Transformer Balanced
Output
-L--R-
Transformerless
Output
-L--R-
R/L
Sub Out
Aux 1
Aux 2
Sub Out
Mono
Output
Tip=Aux 1
Ring=Aux 2
R/L
Sub In
-L--R-
-L--R-
Aux 1
Aux 2
Sub In