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High Pass Filters
The ProMix 6 is equipped with 3 way switch-able high pass filters on each of the
six input channels. These filters can be activated by switching the appropriate
front panel mounted switches. The switches are labeled as follows: 80, 20, 140.
These numbers represent the cut off frequencies of the high pass filters. In the
"20" position, the frequency response is flat down to 20Hz. In the "80" position,
the low frequencies are rolled off with a -3dB point of 80Hz. In the "140" position,
low frequencies are rolled of with a -3dB point of 140Hz. The "80hz" setting is
used for basic low frequency roll offs such as operating indoors with air-
conditioning on or outdoors in light wind conditions. The 140Hz position provides
more severe low frequency roll off and is used in high wind conditions.
Channel Assignment Switch
Each of the six input channels has a Channel Assignment switch that is located
on the front panel above the channel fader pot. These switches are used to
route the audio signal from each individual input to the appropriate output bus.
The switches are labeled as follows: L, C, and R. When set to "L", the signal is
routed to just the left output bus. When set to "C" (Center) the signal is routed to
both the left and right output busses. When set to "R" the signal is routed to just
the right output bus.
Pre-Fade Listen Switch
Each input channel of the PSC ProMix 6 is equipped with a Pre-fade Listen
switch. These push button switches are used whenever you wish to individually
monitor that input's audio via your headphones without having to open the fader.
By pressing the momentary button down, your headphones will automatically be
switched to monitor just that input channel. As soon as you release the PFL
button, your headphones go back to monitoring your standard headphone
selection. These PFL switches are labeled "PFL" and are located below the
channel faders.
They are very useful for setting up wireless, checking for
wireless dropouts, and previewing performer audio levels without having to open
up a channel fader. In this manner, you can check on a given input without
disturbing your ongoing recording.
Peak Reading Meters
The ProMix 6 is equipped with peak reading LED meters. These meters use
high brightness LEDs for easy reading even in bright outdoor conditions. In
addition, there is a screw driver trim pot control located just below the meters that
allows for adjustment of meter brightness. These meters read and respond to
the peak level of the audio signal. They are useful when recording to today's
digital formats. The LEDs are multi colored to allow quick visual checking of the
meter levels. The LEDs that represent audio levels of -21dB to -3dB are GREEN
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