Model 740 Spectral Processor User`s Manual

THRESHOLD

Active

EQUALIZATION

Side Chain

Low Mid

10

SOURCE NR

-6

0 20

In

Eq

Out dB

-12

High

Side

Chain

OUTPUT

CHANNEL

To get an understanding of the crossover controls try the following example. While still in the Side Chain mode, listen to just one frequency band, by turning down the levels in the other two. Alter the

Crossover frequencies to see how they affect each band. Note that the

Mid-band is affected by both upper and lower Crossovers.

Now switch between EQ In and EQ Out to hear the effect of adding this Low-level detail to the main signal to create spectrally processed audio.

Some General Techniques

The settings given in the following section are intended as a starting point, from which new users should be able to: x

Develop a feel for how best to use the processor on a particular track.

x

Get some interesting and worthwhile results instantly.

Low Mid

SECTION 4

FRONT-PANEL CONTROLS

Controls

The controls on the Spectral Processor affect the operation of the signal processing section and are used to control when (in terms of signal level) processing effects begin and end and where (in terms of frequency) the effects will be heard. The Model 740 Spectral

Processor has two channels of processing that may be used independently or as a stereo pair. Each channel is divided into four sections: THRESHOLD, EQUALIZATION, SOURCE NR, and

OUTPUT.

THRESHOLD

Active

EQUALIZATION

Side Chain

10

SOURCE NR

-6

OUTPUT

0 20

In

Eq

Out dB

-12

High

Side

Chain

THRESHOLD Section

The THRESHOLD control is used to control the level at which processing effects begin.

THRESHOLD

Active

The threshold may be set from -60 dB to -40 dB below 0 VU. A setting of -50 dB means that signals below -50 dB will be boosted by 20 dB, signals above -50 dB will receive progressively less boost, reaching unity gain at around -10 dB. Turning the control in a clockwise direction raises the threshold, i.e. more of the signal will be fully boosted and the

Spectral Processor will have more effect on the sound.

Above the threshold control is a 5-LED meter.

Normally, the threshold control should be adjusted so that the center green LED is lit most often.

20