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6
FRONT CONTROLS AND CONNECTIONS
(10)
sound, add warmth to vocals, or extra punch to bass,
drums and synths; the MID control can be used to define
the midrange or bring out the vocals; and adjusting the
HIGH control can provide a crisp sounding high end.
Another very important, yet often overlooked technique is to
use the EQ to subtract from the mix. Cutting the HIGH
control can reduce unwanted sibilance, hiss, cymbals, or
high frequency feedback, while attenuating the MID or LOW
can also eliminate feedback or clear up a muddy sounding
mix. Cutting the HIGH and LOW, then pushing up the
VOLUME CONTROL (9) is equivalent to mid range boost!
[Note: Always reset a channel’s input GAIN CONTROL (4)
(or external device’s output level) after altering the amount
of equalization.]
The key to successful equalization is to avoid excess. Too
much equalization on the input channels will result in a mix
that is smeared together with nothing specifically defined.
During rehearsals, experiment with the equalizer controls
on various instruments, vocals and combinations of these
mixed together to become familiar with various equalizer
settings.
(6) PFL CONTROL
The PFL (pre-fader listen) control adjusts the volume of the
mono signal sent to the HEADPHONES (22) provided the
master section PFL SWITCH(23) is enabled. The signal is
post EQ (5) and independent of the channel VOLUME (9)
or EFFECTS (7). Adjusting the PFL never affects the AUX
SEND (18), RECORD OUT (20), or SPEAKER OUTPUTS
(26). This is useful if the person operating the SPM-4250
wants to listen to one or more of the input signals,
especially, to troubleshoot problems without affecting the
main mix. The PFL controls can also be used to set a sub
mix which can be output from the HEADPHONES jack and
sent to an external recording device, mixing board, or
power amplifier.
(7) EFFECT CONTROL
The EFFECT control adjusts the signal level sent by each
channel to the internal ECHO EFFECTS DSP (Digital
Sound Processor).The EFFECT controls are mono and
post Channel EQ and post Volume. The signal level sent to
the EFF bus will be affected by the channel Volume setting
but not the PAN control. This control also adjusts the level
of the signal sent to the AUX SEND (18).
(8) PAN CONTROL
The PAN positions the output of the channel in the stereo
field of the Master output.
(9) VOLUME CONTROL
This adjusts the channel signal level that is sent to the
master section. This control also adjusts the level of the
signal sent to the AUX SEND (18).
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