Phonic MM 1805, Руководство пользователя

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. GP GROUP SWITCH
The input channel signal always routes to ST; press the GP switch rout
the channel signal to the GP output only, Select GP1 or GP 2 by channel
PAN control. Turn fully to the left, the channel signal will be routed to GP 1;
turn fully to the right, the channel signal will be routed to GP 2; You have
to use the L/R buttons to patch the GP1 or GP2 to either side of the stereo
mix.
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. PFL(Pre-Fader-Listening)
When PFL switch is pressed, the pre-fader signal will be fed to control
room/headphones output, where it replaces the selected monitor source.
PFL is very useful for mixing engineer to monitor individual channel without
affect the main mixes, as to make adjustments or trace problem. When
PFL is selected the LED indicator will light up.
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. NORMAL / MS SWITCH (UNIQUE FEATURE)
If you want to make a M-S stereo recording, normally, you will need 2
microphones, one is cardioid for M signal pointing at the center, and the
other is figure eight microphone for S signal pointing the side. In order to
decode the MS signal to XY, you need 3 channels of Mic input to start with:
one for M and the rest two to for +S and accordingly. MM series unique
feature NORMAL/MS switch will help to simplify the whole thing.
Now you won’t have to worry about the channel availability, and patching
with special cable. When you have an occasion for the stereo recording,
please just choose MM series mixer and simply slide down the M-S switch,
the mixer will prepare everything for you, the odd channel will now become
the M channel, the even channel becomes the S channel.
M-S STEREO RECORDING
M-S is an abbreviation for mid-side, the microphones used for M-S recording
are a cardioid (or figure eight) facing directly to the source, and a figure-eight
microphone facing sideways. The figure-eight microphone picks up the left
half of the source with one phase and the right half with inverted phase.
When the signal is added to the signal from the cardioid, the signal from the
left side adds together, while the signal from the right subtract due to the
phase inversion. The combined pattern of the two microphones is similar to
two cardioids (or figure eight) facing 45 degrees to the left and the other
cardiod facing 45 degrees to the right to create the stereo image.
Why don’t we use two cardioids 90 degrees apart? That will do something
different! With the M-S system, the related angle of the cardioids can be
varied with respect to the level of S (figure eight), and this will vary the width
of the stereo image.
What is Cardioid ?
Cardioid means “ heart-shaped,”and any mic which has a hearted-