Operation - Peavey DPE118P Operating Manual

OPERATION

CONNECTING A SIGNAL TO THE DPE™ 118P SUB
The input (8) provide either a balanced XLR line-level input, or a 1/4" TRS (ring-tip-sleeve)
type phone plug Unbalanced input is also provided, as the 1/4" input (8) can take a standard
single-ended (tip-sleeve) phone plug.
Do not connect cables to the jacks while the unit is ON with the Level knob turned up!
While a standard single-ended 1/4" phone plug-equipped cable will work well and the balanced
input circuitry of the input (8) will provide some interference rejection, a balanced cable using
either the balanced TRS 1/4" phone plug or the XLR plug will provide superior interference
rejection and performance.
Sometimes, with difficult interference problems, it will be helpful to lift the shield ground on a
balanced cable at the DPE™ 118P Sub end by only using the ground lift switch (9). Check any
input changes carefully, always turning the Level control down before plugging and unplugging
cables or engaging the ground lift switch.
Use of high quality, premium cables is recommended for the DPE™ 118P Sub, as these usually
have better shielding and materials and will provide greater long-term reliability. The best option
is a shielded, balanced XLR cable no longer than necessary to reach the DPE™ 118P Sub. It is
usually a good idea to leave some slack at the input to the DPE™ 118P Sub and also to tape the
cables down or run them under a cable guard to avoid anyone tripping over them or pulling the
DPE 2P over when pole mounted.
LEVEL CONTROL ADJUSTMENT
The DPE™ 118P Sub is equipped with a Level control (7) on the input channel to facilitate use in
many different applications. With the Gain control adjusted fully clockwise, gain is at maximum
and the input sensitivity is 0.100 V RMS for full-rated output. When driving the DPE™ 118P Sub
from a mixer, it may be advantageous to reduce the input sensitivity by turning the DPE™ 118P
Sub Level control to the halfway point. The DPE™ 118P Sub will now more closely match a typical
power amp.
If the mixing board indicates clipping of its output signals, then all of the DPE™ 118P Sub power
capability is not being utilized cleanly. Clipping the signal before it gets to the DPE™ 118P Sub is
not optimal. Reduce the mixer output level and turn up the Level control on the DPE™ 118P Sub..
The amplifier in the DPE™ 118P Sub is equipped with DDT™ and multiple LED indicators to show
that DDT has engaged (front panel behind grille).
If the sound seems heavily compressed, check these indicators; if it is blinking RED more than
occasionally, then the drive level from the mixer (or the Level control/s {7} on the DPE™ 118P Sub
needs to be reduced.
When first turning on the sound system, switch on all upstream electronics first, then the DPE™
118P Sub with its Level control fully counterclockwise (all the way down). Begin checking levels
with the mixer output level controls all the way down, and bring them up slowly with the DPE™
118P Sub Level control set to the desired setting (one-third of the way up is recommended to
start).
It is not good practice to turn the Level control on the DPE™ 118P Sub all the way up and then try