Ashly DPX-100 manual Typical Applications, Graphic Equalizer Applications

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

mpressor/Limiter			Graphic Equalizer
	PUSH			PUSH
tecto r Re turn/ D ucking Input
Mono Plug For Ducking)
ING = D etecto r S end
		Chain

D etector

Input

In O ut

OutputInput

7.2 Inputs and Outputs

The DPX-100 uses two different audio connec- tor types. 1/4" TRS (tip-ring-sleeve) phone jacks, and three pin XLR connectors will allow interfacing to most professional audio products. Ashly TRS balanced con- nections use the tip as (+) and the ring as (-) signal, with sleeve used for ground. Ashly XLR connectors use pin 2

(+)and pin 3 (-) with pin 1 ground. Inputs are 20KΩ

active balanced using precision 1% metal film resistors, outputs are 200Ω "pseudo-balanced", which means they

have balanced impedance with a single-ended signal source, and can be wired balanced or unbalanced. When possible, we recommend balanced connections between all components in your system.

If inputs are used unbalanced, the signal should be on the (+) connection and the (-) connection must be tied to ground, or signal loss will result. While a mono phone plug used as an unbalanced connection will auto- matically ground the (-) ring of the jack, XLR's will not automatically do this, so attention must be given to proper wiring.

Tip (+)

Ring (-)

S leeve (Gnd)

S tereo Phone Plug used for balanced

Tip (+)

S leeve (Gnd)

M ono Phone Plug used for unbalanced

XLR M ale

XLR pins are num bered on the connector insert.

2 = (+ )

3 = (-)

1 = (gnd)

XLR Fem ale

Audio Connector Types

7.3 Chain

The chain button on the back panel allows the output of the equalizer to be fed directly to the input of the compressor/limiter, with no external cable required. When the chain switch is in, the input connectors to the compressor/limiter are removed from the circuit, while the graphic equalizer outputs remain functional.

7.4 Detector Loop - Ducking

The DPX-100 compressor/limiter has a TRS In- sert DETECTOR PATCH point which can be used as a "ducking" input, or in conjunction with an equalizer to produce frequency-sensitive limiting. Various uses of the detector patch are discussed under TYPICAL APPLICA-

TIONS.

8. TYPICAL APPLICATIONS

By itself, the 15 band graphic EQ is useful for general tone control, feedback control, and room reso- nance correction. The compressor/limiter provides many solutions where dynamic signal level processing is re- quired. The combination of graphic EQ and compressor/ limiter allows for additional applications, such as a full range speaker processor, 70 volt distributed system pro- cessor, mixing console channel insert, and frequency sen- sitive limiting, to name a few. In most cases, the DPX-100 should be the last device before the power amp or cross- over, or right before a recording device or transmitter.

8.1GRAPHIC EQUALIZER APPLICATIONS

General Tone Control

The graphic equalizer is a very useful device for general tone shaping because it is intuitive and easy to adjust. The visual reference provided by the slider posi- tion gives an approximate idea of the frequency response generated, with the lower frequencies on the left and higher frequencies on the right. To use the power of an

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