Ashly DPX-100 Operating Manual - Page 4

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

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.

Ashly Security Cover Installation

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.