7
C O N T R O L S A N D C O N N E C T I O N S
(14) ECHO EFFECTS DISPLAY
This numeric LED display will indicate which of the 16 echo
presets has been selected (0 - F).
(15) ECHO EFFECTS REPEAT CONTROL
This control adjusts the number of repeats and feedback/depth of
the echo effect. Turning the control clockwise sets the repeats to
maximum for lengthy stadium echoes or plate effects. Turning the
control counter-clockwise sets less repeats for doubling effects.
The
Effects Channel Pan Control (8)
,
Submix 1 & 2 Select
Button (9)
,
PFL Button (10)
, and
Channel Volume Control (11)
all operate same as the other channels on the internal Echo
Effects signal or the Effects Return signal.
(16) SUBMIX 1 & 2 VOLUME FADERS
These faders adjust the level of the Submix 1 & 2 signals that are
sent to the
Submix 1 & 2 Outputs (30)
. These faders are post
Submix 1 & 2 Send/Return Inserts (29)
and will control any
signal returning to the PMX-420 via those jacks. The Submix
signal can also be selected for the
Headphone Output (26)
for
easy monitoring. The Submix can be a very useful feature if
used effectively The Submix can be used as a mixing aid both
live and in the studio; for example, to combine certain signals to
send to a monitor feed, external power amp, or to an external
effects processor. This submix can also be added to the
Main/Master mix by depressing the
Submix to L-R
Enable Buttons (17)
.
(17) SUBMIX TO L-R ENABLE BUTTONS
When these push-button switches are depressed,
the Submix signal is added to the Main/Master bus
via the Pan controls.
(18) SUBMIX TO L-R PAN CONTROLS
With the
Submix to L-R Buttons (17)
enabled, the
Submix can be panned on to the Main Left & Right
bus using these controls
(19) MAIN LEFT & RIGHT VOLUME FADERS
These adjust the final level of the Master Left &
Right signals, that are sent to the
Main Left &
Right (32)
,
Record (34)
,
Low-Pass (33),
Headphone (26),
and
Speaker Stereo Outputs
(36)
. These faders are post
Main Left & Right
Send/Return Inserts (31)
and will affect any signal
returning to the PMX-420 via those jacks.
(20) LED LEVEL SELECT SWITCH
This switch is used to select which signals will illuminate the
Dual
LED Bargraph Meter (21)
. Main Stereo Left & Right signals are
displayed when set to L - R. When set to S1 - S2, Submix 1 is
displayed on the left and Submix 2 is displayed on the right.
When set to Effects - PFL, the effects level is displayed on the
left bargraph and the PFL level is displayed on the right
bargraph.
(21) DUAL LED BARGRAPH METER
These 5-stage dual LED meters will display the relative output
level of either the Main Left and Right, Submix 1 & 2, or Effects
and PFL signals depending on the LED Level Select switch. They
can be used to maintain proper levels. When set to Main Left &
Right, the top red Peak LED will light when the powered output
signal is just below clipping. It is acceptable if the red LED lights
occasionally. If the red LED lights more than occasionally, you
should turn down the
Main Left & Right Volume Faders (19)
to
avoid audible distortion and clipping, which can cause damage to
your speakers and even the internal amplifier.
[Caution: Prolonged use at levels above clipping can cause
damage to your speakers and even the internal amplifier.
Carefully monitor the bargraph meter to avoid prolonged
clipping.]
(22) HEADPHONE SELECT SWITCH
This switch is used to set which signal will be sent to the
Headphones Output (26).
Main Stereo Left & Right signals are
sent when set to L - R. When set to S1 - S2, Submix 1 is heard
on the left and Submix 2 on the right. The signal of any channel
with its PFL Button depressed is heard when the switch is set to
PFL.
(23) POWER LED
This LED will illuminate when the unit is switched on.
(24) PFL LED
This LED will illuminate when any one of the Channel
PFL
Buttons (10)
are switched on.
(25) HEADPHONE CONTROL
The volume control adjusts the level of the
Headphone Output
(26)
. The
Headphone Select Switch (22)
determines which
signal is heard.
(26) HEADPHONE OUTPUT
The Headphone 1/4” stereo output can be used to monitor the
Main, Submix, or PFL signals. Capable of powering headphones
with impedances of 8 ohms or greater
(27) EFFECTS SEND OUTPUT
(27)
(25)
(26)
(28)
(30)
(29)
(33)
(35)
(34)
(32)
(31)
3. MASTER INPUT / OUTPUT SECTION
