STEREO INPUT CHANNEL
STEREO INPUT CHANNEL
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Each stereo channel features a mono microphone preamp as well as a stereo
line input. These sources can be mixed together into the channel or split using
the microphone breakpoint STEREO CHANNEL MIC OUT (5), so providing a
unique flexibility. For example, you could patch the STEREO CHANNEL MIC IN
(4) as an independent preamp for an ambience microphone feeding a recording,
or for a system calibration microphone, while the STEREO CHANNEL LINE IN
(6) returns an external effects processor to the mix. Two stereo channels could
be linked so that the microphone preamps cross patch to provide one stereo mic
and one stereo line channel.
30. +48V PHANTOM POWER
Switches +48V DC to the channel input XLR for powering condenser
microphones or DI boxes that need phantom power. When pressed, the red LED
indicator lights up, indicating the c48V is active.
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CAUTIONS:
Do not connect unbalanced sources or
cables to the XLR input when +48V PHANTOM power is
selected. To avoid loud thumps, always turn the channel
off by pressing MUTE when swi48V PHANTOM
on or off, and when plugging or unplugging
microphones.
31. Ø POLARITY
Reverses the polarity (+ and - connections) of the input source. Useful when
using the “above/below” microphones technique, for example when miking a
snare drum with two microphones, or for correcting microphone placement and
cable wiring errors.
32. MIC GAIN
Adjusts the input sensitivity of microphone preamp (C.R.I.S.T.A.L.® Audiophile
PreAmps) to match the connected source to the internal 0dBu operating level of
the channel. Provides a variable 54dB range from +6dB to +60dB microphone
(MIC IN) gain. The gain should be set so that the meters average “0” with
loudest moment lighting “+6”. Reduce gain if the red peak (PK!) indicator lights.
33. LINE GAIN
A level control adjusts from fully off (-∞) to +16dB gain. The L input signal is
normalled through the R input socket so that a mono source may be plugged in
to feed both left and right sides of the stereo channel. 12 o'clock position is unity
gain (0dB).
34. EQ
Similar to the mono channel, but the two peak/dip mid bands are fixed at 250Hz
and 2.5kHz centre frequencies.
35. EQ ON
Use EQ ON to compare the sound with the equalizer switched in or out of
circuit. The green LED indicator lights up when the channel EQ circuit is active.
