22
Specific Applications
Anticipated compression
By feeding the program directly to the 160XT's
detector input and sending the audio signal
through a delay line before the audio input , the
unit can "an ticipate" the need for a gain change.
See Figure 16. With some experimentation the ef-
fect can be that of "zero" attack time at a given fre-
quency. Additional signal delays beyond this
"zero" time will then cause the compressor to fin-
ish reducing the gain before the leading edge of the
loud passage even enters the signal input. This will
suppress the program material preceding this loud
passage. The 160XT will then begin to release (re-
cover from compression) before the loud passage
has dropped back down toward the set threshold.
This will cause the output level to surge higher as
the note or passage should be decaying. The pro-
duced effect sounds like reverse playback of a tape
recording. When coupled with Infinity+ compres-
sion, highly unusual effects can be achieved.
Installation Considerations
Power Considerations
Connect Power
A. Check the line voltage.
The 160XT is shipped for 115 or 230V, 50 or 60Hz
operation. Refer to the unit's rear panel to verify
your unit's precise line voltage.
SOURCE
I!
IN DETECTOR
, I
DEIAY
IN
AUDIO
OUT
'
160XT
Figure 16: Anticipated Compression
dbx 160XT
B. Connect the 160XT's power cord to an appropriate AC power source.
Mounting the 160XT in a Rack (OPTIONAL)
Mount the 160XT in a lU rack space (1.75 inches,
4.45 cm).
Mounting the unit directly over large heat-producing devices (such as a vacuum-tube power amplifier)
may shor ten componen t life and is not recommended. Ambient temperatures should not exceed 113°F (45°C)
when equipment is powered.
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