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Operating controls, Front panel, Compressor/ limiter/gate – dbx 1066 User Manual

Page 8: Channel two, Channel one

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Operating Controls

Front Panel

CHANNEL TWO

1066

Compressor/

Limiter/Gate

Stereo

Couple

EXPANDER / GATE

LIMITER

COMPRESSOR

GAIN REDUCTION dB

INPUT / OUTPUT LEVEL dBu

THRESHOLD

THRESHOLD

THRESHOLD

SC Enable

SC Mon

OverEasy

Contour

Auto

I/O Meter

Bypass

-24

-18

-12

-6

0

+6

+12 +18

- +

+

24

21

27

30

18

15

12

9

6

4

2

1

-

O

+

THRESHOLD

RATIO

OUTPUT GAIN

THRESHOLD

ATTACK

RATIO

RELEASE

-40

-20

+15

0

OFF

-60

dBu

2:1

4:1

3:1

1.2:1

8:1

1.4:1

1.6:1

0

-20

-10

+10

+20

dB

.35

3

1

.15

.04

dB/mSec

4:1

:1

10:1

6:1

1:1

2:1

3:1

OFF

+16

+12

+4

+6

+8

dBu

-10

0

+20

+10

-40

-30

-20

dBu

50

250

125

12.5

5

dB/Sec

PeakStopPlus

CHANNEL ONE

CHANNEL ONE

SIDECHAIN

OUTPUTS

INPUTS

SEND

RETURN

OPERATING

LEVEL

+4 dBu

-10 dBV

CHANNEL TWO

SIDECHAIN

OUTPUTS

INPUTS

SEND

RETURN

OPERATING

LEVEL

+4 dBu

-10 dBV

230V

50/60Hz

115V

50/60Hz

PROFESSIONAL

PRODUCTS

A HARMAN

INTERNATIONAL

COMPANY

SALT LAKE CITY, UTAH

MADE IN USA

MODEL 1066

85-4009-P1 dbx 1066 rear art 1/11/96

85-4012-P5 dbx 1066 rear art 1/11/96

PIN1 / SLEEVE

PIN 2 / TIP

+

PIN 3 / RING

-

PIN1 / SLEEVE

PIN 2 / TIP

+

PIN 3 / RING

-

FUSE: REPLACE WITH SAME

TYPE FUSE AND RATING.

ATTENTION: UTILISER

UN FUSIBLE DE RECHANGE

DE MEME TYPE ET CALIBRE.

100-120V: 250mA 250V

SLOW BLOW

200-240V: T 125mA L 250V

EXPANDER / GATE

LIMITER

COMPRESSOR

GAIN REDUCTION dB

INPUT / OUTPUT LEVEL dBu

THRESHOLD

THRESHOLD

THRESHOLD

SC Enable

SC Mon

OverEasy

Contour

Auto

I/O Meter

Bypass

-24

-18

-12

-6

0

+6

+12 +18

- +

+

24

21

27

30

18

15

12

9

6

4

2

1

-

O

+

THRESHOLD

RATIO

OUTPUT GAIN

THRESHOLD

ATTACK

RATIO

RELEASE

-40

-20

+15

0

OFF

-60

dBu

2:1

4:1

3:1

1.2:1

8:1

1.4:1

1.6:1

0

-20

-10

+10

+20

dB

.35

3

1

.15

.04

dB/mSec

4:1

:1

10:1

6:1

1:1

2:1

3:1

OFF

+16

+12

+4

+6

+8

dBu

-10

0

+20

+10

-40

-30

-20

dBu

50

250

125

12.5

5

dB/Sec

PeakStopPlus

PROFESSIONAL PRODUCTS

Stereo Link Switch - This switch changes the 1066 from two independent compressors into a stereo compressor.
In stereo mode, Channel 1 is the master and Channel 2 is the slave. Each of the Channel 2 controls and switch
functions will be overriden and controlled by the Channel 1 controls and switches, except the Sidechain Monitor,
Sidechain Enable, Contour, and Bypass switches. Also, Channel 2’s Expander/Gate, Compressor Threshold, and
PeakStopPlus™ Threshold meters will be disabled, while both channels’ Gain Reduction meters will identically

indicate the amount of gain reduction occurring. It is important to note that while Channel 1 is the master as
far as the controls go, both channels have equal precedence as far as signal processing is concerned. The dbx
1066 uses True RMS Power Summing™, an extremely accurate and musical way to combine detector outputs in a
stereo situation. The switch will light to indicate that the 1066 is in the Stereo Link mode.

Expander/Gate Threshold Control - This control sets the level below which gating/expansion occurs. It has an
effective control range of -60 dB to +15 dB. When it is fully counter clockwise to the “off” position, no gating
or expansion occurs.

Expander/Gate Threshold Below (-) LED - This LED illuminates when the signal is below the level set by the
EXPANDER/GATE THRESHOLD control and indicates that expansion or gating is occurring.

Expander/Gate Threshold Above (+) LED - This LED illuminates when the signal is above the level set by the
EXPANDER/GATE THRESHOLD control and indicates that no expansion or gating is occurring.

Expander/Gate Ratio Control - This control sets the expansion ratio and varies from 1:1 to 8:1. It is important
to note that as the signal passes below the threshold, the input/output gain relationship does not transition
sharply form unity gain (where no expansion is occurring) to the ratio set by the EXPANDER RATIO control. The
1066’s expander utilizes a soft-knee OverEasy® threshold circuit analogous to the OverEasy® compressor curve
made famous by the 1066’s predecessors and employed in the compressor section of the 1066. See Figure 1. This

soft knee contributes to the smooth and natural sounding decay of the 1066 expander making its action virtu-
ally transparent with low to moderate ratio settings. When hard gating is required, higher ratio settings cause
the expander to function like a gate. The expander attack and release times are program-dependent. The detec-
tor intelligently senses the need for fast attack for rapidly-changing signals, and slows down for more stable
signals.

Operating controls