LEFT OUTPUT
AUX RETURNS OR INPUT CHANNELS
0
10
0
0
10
10
AUX SEND1
LEFT INPUT
RIGHT OUTPUT
MIXER
AUX SEND1
AUX RETURNS OR INPUT CHANNELS
MIXER
10
0
0
10
0
10
LEFT INPUT
RIGHT OUTPUT
LEFT OUTPUT
RIGHT INPUT
AUX SEND2
MONO IN - STEREO OUT.
STEREO IN - STEREO OUT.
If you only want to feed the DEP a mono input, but wish to connect both of its outputs back to
the mixer, you will need three 1/4" audio cables. Connect a 1/4" phone cord from an effect send to
the [LEFT] input of the DEP, another 1/4" phone cord from the [LEFT] output of the DEP to
an effect return or other mixer input, and another 1/4" phone cord from the [RIGHT] output of the
DEP to an adjacent effect return or mixer input.
The DEP creates a stereo output, even though only a single input is used.
This connection is similar to the one described above. However, by utilizing two sends from the
mixer, we add one more cord and can now send a stereo signal to the DEP's inputs. For
example, if you connected sends 3 and 4 to the [LEFT] and [RIGHT] inputs, and had a stereo
instrument (such as a keyboard) connected to two channel inputs of the mixer (either one panned
hard left and hard right), you would send the left channel to send 3 and the right channel to send 4.
This is especially useful on the true stereo chorus program; on reverb and delay programs only a
mono input is needed.
How to Set Aux Send and Return Levels on the Mixer.
In the above hookups, you must set correct levels on the mixer's individual Aux Sends, Aux
Masters, and Aux Return masters (as well as the DEP's own controls) to get good, clean,
quiet results.
By having the correct level at every point in the send/return chain, you avoid distortion by overlo-
ading and avoid noise. The most common mistake with effect units like the DEP is to have too
low a level at the input, then crank up the output to get the effects level desired, this amplifie's
noise and wastes headroom. Here is a procedure that will give good results with most standard
equipment:
Improper level setting is the most common cause of noise and distortion problems.
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Set your mixer's input levels correctly, following the instructions for the mixer.
Turn up the mixer channels' AUX SEND and AUX MASTERS (if applicable) to a nominal level
(this is usually between "noon" and "3:00" on a rotary knob).
3. Play the source.
4. Turn up the DEP's [INPUT] level until you see the [SIGNAL] LED turn red on peaks; then
reduce it slightly until the red doesn't flash. The ideal input level, for optimum
performance,
is just below clipping. But if other instruments will be added to the mix later, or levels are unpred-
ictable (as in a live show), leave yourself additional headroom by turning the input level down a
bit more.
5. Depending on the input sensitivity of the mixer's channels or Aux Returns, the [OUTPUT] knob
of the DEP should be set somewhere between "2:00" and fully clockwise ("5:00").
6. Turn up the AUX RETURN level until you get the desired level of effect in the mix. The one
control in the chain that may need to be set to a low level is the Aux Return (or channel) on the
mixer itself. Here is where you should increase or decrease the
effect level in the mix,
for best low-noise performance. If you want "just a hint"
don't turn down the send to
the DEP; turn down the Aux Return. Leave
levels where they were set in step 4,
unless you see the [SIGNAL] LED flash.
If your mixer features individual channel inserts, you can dedicate the DEP to a
channel on the mixer. Insert jacks on the back of a mixer provide a way of
processing equipment into the signal path. The insert occurs after the
before
the channel fader; essentially it is the same as connecting the
microphone)
into the DEP before the mixer's channel input.
However, some mixing console's inserts come after the EQ section, and may therefore be different
from the original signal. If nothing is connected to the channel's Insert jack, the signal passes
through with no effect.
Usually, insert connections require a special, stereo-splitting Y-cord to be connected (one stereo
plug provides both send and return while two mono plugs connect separately to the effects unit's
input and output). These are known as TRS connectors (tip-ring-sleeve). The tip of the stereo plug
carries the send or output of the insert jack, while the ring
back the return. The sleeve rep-
resents a common ground for both signals.
This involves connecting a 1/4" TRS (tip-ring-sleeve) Y-cable to the Insert jack of a single channel
on a mixing console. The other end of the cable (which splits into two, 1/4" mono connectors) are
connected to the [LEFT] input and [LEFT] output, respectively. If you do
hear any audio after
making these connections, swap the input and output cables at
DEP, as these may be
wired backwards. If the cable is color-coded, usually the
represents the send (which
connects to the DEP's input) and black is the
connects to the output).
Once the proper connection has been made, you must set the desired "wet/dry" balance using the
DEP's [MIX] control. The [INPUT] and [OUTPUT] controls of the DEP should be set for
unity gain: the volume when the Insert jack is plugged in the mixer should be approximately the
same as when the DEP is out of the circuit.
noise
overall
of reverb,
the input
specific
"inserting" external
input amplifier, and
source (instrument or
carries
not
the
red jack
return (which
Using Inserts
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