Ashly DPX-100 User Manual

Page 4

Operating Manual - DPX-100 Graphic Equalizer - Compressor/Limiter

5. EQ CONTROLS

5.1 EQ Boost/Cut

The individual equalization faders adjust the

boost or cut at each filter frequency. By adjusting a com-
bination of faders, an overall frequency response can be
developed and the physical position of the faders will give
an approximate visual indication of this response.

5.2 Gain

The gain control adjusts the overall gain of the

equalizer when the EQ switch is “in”. It is generally used
to compensate for level changes due to the equalization
process, but can also allow the equalizer to adjust overall
system level and gain structure. Overall gain with this
control is from +6dB to -

∞

5.3 Range

This switch selects the operating range of the

individual equalization faders to either ±15dB or ±6dB.
The ±15dB settings should be used when much equaliza-
tion is needed. The ±6dB setting allows finer resolution
on the fader settings.

5.4 HPF (Hi-Pass Filter)

The high-pass filter can be used to supplement

the frequency response achieved by the bandpass filters.
It’s function is to “roll off” low end response to eliminate
subsonic interference like wind noise, floor rumble, and
boomy microphone pops. The high-pass frequency is fixed
at 20Hz with an 18dB/octave slope.

5.5 EQ In/Out

This switches out the boost/cut controls and EQ

gain adjustments. This way, the effect of any equaliza-
tion can be compared to a “flat” response. This switch
does not defeat the high-pass filter.

5.6 Sig and Clip LEDs

The signal present LED comes on when a signal

greater than -20dBu arrives at the EQ input. The clip
LED indicates any EQ signal level exceeding +19dBu.

4. MECHANICAL INSTALLATION

The DPX-100 mounts in a standard 19 inch

equipment rack. The mounting screw threads vary with
different rack manufactures and you should refer to your
rack instructions for proper hardware. An oval head or
flat head screw with a plastic countersink washer is pre-
ferred to protect the finish of the DPX-100 under the screw.

This unit is housed in a rugged steel case and

will tolerate moderate abuse. However, for road systems
which may be dropped or otherwise subjected to extreme
forces, we recommend some rear support for the chassis
to prevent bending the front panel the front panel when
these forces occur.

For installations where it is desirable to protect

the front panel controls from tampering or accidental
misadjustment, use the Ashly security cover. Installation
is simple and does not require removal of the equipment
from your rack. See your Ashly dealer for details.

HPF

2 0 Hz

O u t

O ut

1 0K

Gain

6.3K

1 6K

2.5K

1 .8K

1 K

630

400

250

1 80

1 00

-3
-9

∞

+1 5
+1 0
+5

-5
-1 0
-1 5

S ig C lip

R an ge

±6 dB

±1 5d B

M odel DPX -100

Graphic Eq ualizer

Com pressor/Limiter

Ashly Security Cover Installation