Specifications

4
Operating Manual -MX-508 Stereo Microphone/Line Mixer
4. CONTROLS
4.1 Input Level (Gain)
This control sets the operating level of the Microphone preamp and
Line Input. Best signal to noise ratio is obtained with higher gain settings. It
is therefore desirable to set the Gain control as high as possible while still
leaving enough headroom (usually 20dB) to prevent distortion.
4.2 Mic-Line Switch
This switch selects between the XLR microphone input or the 1/4"
line input jack as the signal source. It can also serve as a "channel mute"
switch when selected to the unused input.
4.3 Channel Clip Indicator
This peak sensitive indicator monitors all level critical points in the
input channel and illuminates if any of them reach levels 3 dB below clip-
ping.
4.4 Equalization
Channel EQ consists of a high shelf control at 15KHz (middle of
shelf), a sweepable mid control, and a 70Hz low shelf control. The mid
control is sweepable from 140Hz to 8KHz with a bandwidth of approximately
1 octave.
4.5 Aux Sends
These are an additional pair of level con-
trols to adjust the feed to monitors or effects units.
Aux 1 is factory preset to pre-fader, pre-EQ, while
Aux 2 is post-fader, post-EQ. Both Aux sends can
be internally switched to pre or post fader/EQ. Note:
See section on changing factory configurations.
4.6 Level and Pan
This concentric pair of controls adjusts the
level and stereo position of the channel.
4.7 Aux Master Sends
These controls adjust the overall gain of the output stages for the Aux 1 and Aux 2
outputs.
4.8 Aux Master Returns With Pan
These concentric level and pan controls adjust the returning signal from effects units
or auxiliary inputs to the Main Left and Right outputs. Return 1 is stereo and return
2 is mono. If only the right connection to return 1 is made, this return will function
as mono with pan.
4.9 Tape/CD Input and Send
This stereo level control adjusts the Tape/CD input to the Main Stereo outputs. The
outer concentric control labeled "To Aux 1" sums the left and right Tape/CD inputs
to a mono signal and applies it to the Aux 1 Master group for use with monitors or
effects. It is "pre-fader", or independent of the stereo level control.
100
PanLevel
100
Aux 2Aux 1
+12-12
+12-12
5K
2.5K
1.2K
630
+12-12
-60-20
dB
-50
-40
0
-30
+22 -24
Clip
M
L
Ch.1
3
1
-
Input
Level
High EQ
Low EQ
Aux1
Aux2
Mid EQ
Frequency
Level
Pan
p
Mic
Line
100
100
To Aux 1
T
ape/CD In
PanReturn 2
PanReturn 1
100
100
100
(Stereo)
Aux 2 Send
Aux 1 Send
Aux Master