Vizio D-5.5E - Manual (Page 18)

Procedure for Changing Internal Switch Setting
NOTE:
The internal switches have been provided for added
versatility when using the D-5.5 and D-5.5E in a
variety of applications.
AUX 1 / AUX 2 SEND PRE/POST EQ SELECTION
SWITCH: Each input features an auxiliary send control
for use as either an additional effects send, or as an
on-stage monitor send. You should note that the Aux 1
and 2 control are a "split" pot with the
detent
position (12o'clock) being the off position. Typically,
the control would be rotated clockwise ("post") when
used as an effects send. This enables the effects level to
be automatically increased as the input channel level
increases. Obviously, since this signal is also derived
"post" EQ, any changes made in the input channel's EQ
settings will be reflected in the effects signal. When the
AUX 1 or 2 control is to be used as an on-stage
monitoring send, the control would typically be rotated
counter clockwise ("pre"). This allows the on-stage
monitor mix to operate independently of the input
channel's fader. In other words, any change in the input
channel's fader will not affect the level of the monitor
mix. The Aux Send Pre/Post EQ Selection Switch is
active only when the Aux 1 or 2 Control is used in the
"pre" (counter clockwise) position. When the switch is
set to the "pre" EQ position, the input channel's EQ
controls will not affect the on-stage monitor mix. This is
particularly desirable when the input source is a
microphone. Since an on-stage monitor system is
normally operated near acoustic feedback, a change in
EQ (especially an increase in high frequencies) may
cause ringing or squealing (feedback) through the
on-stage monitor speaker system. However, when the
input source is a synthesizer, musical instrument, etc.,
which is not so susceptible to feedback, you may desire
to place the switch in the "post" EQ position so that the
input channel EQ will affect that instrument in the
monitor mix.
NOTE:
The Aux 1 and 2 controls are unable to independently
derive the pre or post EQ signal via the pre/post EQ
selection switch, but always derive the same signal.
Also the selection switch provides the pre or post EQ
signal for the cue switch.
WARNING
The D-5.5 and D-5.5E contain voltage levels that may be
hazardous to human life. Always disconnect the power
cord from wall outlet prior to removing either unit's
outer case.
1. Disconnect the power cord from the wall outlet.
2. Remove the four screws that secure the bottom panel
to the main chassis, and carefully remove the panel
(See Fig 1)
Fig l
INPUT
CHANNEL
PCB
PRE
POST POST
PRE PRE
POST
BUSS LINK
CONNECTOR
Fig 2
3. Refer to block diagrams and Figure 2 for location and
orientation of switches.
4. Set switches to desired positions.
5. Carefully replace the bottom panel and secure with
four screws.
6. The Aux send pre/post EQ switch is factory preset at
"POST" position (post-EQ).
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