M-S And X-Y Stereo Recording - PSC M3 Operation Manual

can monitor levels from the mixer only. We have chosen 440Hz simply because
it is much more pleasant in your headphones than the typical 1Khz used by other
manufactures. We have used 440 Hz on our mixers for many years. The
reference oscillator is equipped with a level adjustment trim pot located on the
bottom panel of the M3 Mixer. This adjustment is factory calibrated and should
not be adjusted without proper measurement equipment. It should be noted that
the three input channels are automatically muted whenever the Oscillator button
is pressed. The assures that the reference tone is of accurate level.
C. BATTERY TEST
In addition to the low battery indicator on the LCD meter, the M3 Mixer is
equipped with a push button activated battery test function: When pressed the
remaining battery life is displayed on the top (left meter). A full battery will
indicate approximately "0" on the meter. A dead battery will not indicate on the
meter. You can read the meter as a "fuel gauge". Full bar = full battery, half bar
= half battery, etc. This battery level meter can be adjusted for the differences in
battery types, NP-1 of various voltages or alkalines. This battery test function
can be adjusted to specific type batteries via a bottom panel mounted switches.
Because the M3 Mixer uses only a small amount of current, the mixer will
operate for many hours on even a "dead" NP-1 battery. Because the mixer will
operate down to 6.0Vdc, it will continue to operate long after the low battery
indication comes on when using NP-1 batteries. This can be useful in the field as
even a battery considered "dead" by the camera operator may work with your
M3. Note that over discharging of re-chargeable batteries on a regular basis is
not a recommended practice for everyday use!
D.

M-S AND X-Y STEREO RECORDING

The PSC M3 Mixer can be used to make stereo recordings in both the mid-side
and X-Y stereo techniques. The M3 Mixer is equipped with an input channel
ganging switch designed to allow the ganging of input channels 2 and 3. This
switch is located on the front panel of the mixer. When switched to the "ganged"
position, both input channels 2 and 3 are controlled by pot 3. All microphone
powering and attenuation settings remain independent. X-Y stereo recordings
are accomplished by plugging in two identical microphones into channels 2 and
3. The channel 2 pan switch is set to the left and the channel 3 pan switch is set
to the right. The headphone monitor mode switch is set to "stereo".
If M-S stereo recordings are desired, the "M" or middle microphone (cardiod
pattern) is plugged into channel 2. The "S" or side microphone (Figure 8 pattern)
is plugged into channel 3. As with the X-Y setup, pan switch 2 is set to the left
and pan switch 3 to the right. In this case, the headphone mode switch is set to
"MS". In the MS mode, the headphone amplifiers are fed MS decoded signals.
The left headphone amp is fed M-S signals and the right headphone is fed M+S
signals. In this manner, MS signals appear as standard stereo signals for
headphone monitoring purposes. Note that the MS decode function only affects
the headphone feeds, not the main XLR outputs.
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