1046

QUAD COMPRESSOR

 

 

GAIN REDUCTION dB

 

 

 

INPUT / OUTPUT LEVEL dBu

 

THRESHOLD

 

 

 

GAIN REDUCTION dB

 

 

 

INPUT / OUTPUT LEVEL dBu

 

THRESHOLD

 

 

GAIN REDUCTION dB

 

 

 

INPUT / OUTPUT LEVEL dBu

 

THRESHOLD

 

 

 

GAIN REDUCTION dB

 

 

INPUT / OUTPUT LEVEL dBu

 

THRESHOLD

 

30

25

20

15

10

6

3

1

-24

-18

-12

-6

0

+6

+12

+18

 

+

 

 

30

25

20

15

10

6

3

1

-24

-18

-12

-6

0

+6

+12

+18

 

+

30

25

20

15

10

6

3

1

-24

-18

-12

-6

0

+6

+12

+18

 

+

 

 

30

25

20

15

10

6

3

1

-24

-18

-12

-6

0

+6

+12

+18

 

+

 

 

-20

-10

CHANNEL ONE

 

3:1

 

 

 

0

 

 

 

 

 

+12

 

-20

-10

CHANNEL TWO

 

3:1

 

 

 

0

 

 

 

 

 

+12

-20

-10

CHANNEL THREE 3:1

 

 

 

0

 

 

 

 

 

+12

 

-20

-10

CHANNEL FOUR

3:1

 

 

 

0

 

 

 

 

 

+12

 

1046

 

0

 

 

2:1

 

 

4:1

 

 

 

 

 

 

+10

 

+14

 

0

 

 

2:1

 

 

4:1

 

 

 

 

 

 

+10

 

+14

 

0

 

 

2:1

 

 

4:1

 

 

 

 

 

 

+10

 

+14

 

0

 

 

2:1

 

4:1

 

 

 

 

 

 

+10

 

+14

 

 

 

 

 

 

 

 

 

-10

 

 

 

 

+10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-10

 

 

 

 

+10

 

 

 

 

 

 

 

 

 

 

 

 

-10

 

 

 

 

+10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-10

 

 

 

 

+10

 

 

 

 

-30

 

 

+10 1.5:1

 

 

8:1

 

 

 

 

 

 

+6

 

 

+20

-30

 

 

 

+10 1.5:1

 

 

8:1

 

 

 

 

 

 

+6

 

+20

-30

 

 

+10 1.5:1

 

 

8:1

 

 

 

 

 

 

+6

 

 

+20

-30

 

 

 

+10 1.5:1

 

 

8:1

 

 

 

 

 

 

+6

 

 

+20

Quad

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compressor/

PROFESSIONAL PRODUCTS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stereo

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stereo

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OverEasy

 

 

 

I/O Meter

 

 

 

 

Bypass

 

 

Couple

 

 

 

OverEasy

 

 

 

I/O Meter

 

 

 

 

Bypass

 

 

 

 

 

OverEasy

 

 

 

I/O Meter

 

 

 

 

Bypass

 

 

Couple

 

 

 

OverEasy

 

 

 

I/O Meter

 

 

 

 

Bypass

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Limiter

-40

dBu

+20

 

 

1:1

 

:1

 

-20

dB

+20

 

 

+4

dBu

OFF

 

-40

dBu

+20

 

 

1:1

 

:1

 

-20

dB

+20

 

+4

dBu OFF

-40

dBu

+20

 

 

1:1

 

:1

 

-20

dB

+20

 

 

+4

dBu

OFF

 

-40

dBu

+20

 

 

 

1:1

 

:1

 

-20

dB

+20

 

 

+4

dBu

OFF

THRESHOLD

 

 

 

 

RATIO

 

 

OUTPUT GAIN

 

 

PeakStopPlus

 

THRESHOLD

 

 

 

 

RATIO

 

 

OUTPUT GAIN

 

 

PeakStopPlus

THRESHOLD

 

 

 

 

RATIO

 

 

OUTPUT GAIN

 

 

PeakStopPlus

 

THRESHOLD

 

 

 

 

RATIO

 

 

OUTPUT GAIN

 

 

PeakStopPlus

 

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

LIMITER

 

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

LIMITER

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

LIMITER

 

 

 

 

 

 

 

COMPRESSOR

 

 

 

 

 

 

 

 

LIMITER

 

CHANNEL FOUR

 

CHANNEL THREE

 

CHANNEL TWO

 

CHANNEL ONE

OUTPUTS

 

INPUTS

OUTPUTS

 

INPUTS

OUTPUTS

 

INPUTS

OUTPUTS

INPUTS

OPERATING

+4 dBu

 

OPERATING

+4 dBu

 

OPERATING

+4 dBu

 

OPERATING

+4 dBu

LEVEL

-10 dBV

 

LEVEL

-10 dBV

 

LEVEL

-10 dBV

 

LEVEL

-10 dBV

PROFESSIONAL PRODUCTS MANUFACTURED UNDER ONE OR MORE OF THE FOLLOWING U.S. PATENTS 4,234,804 4,316,107 4,329,598 4,331,931 4,377,792 4,403,199 4,409,500 4,425,551 4,434,380 4,454,433 4,471,324 4,473,793 OTHER PATENTS PENDING

The compressor/limiter shall have four identical chan- nels, each with an audio frequency response of 20Hz to 25kHz, +0/-0.5dB , an electronically floating balanced input impedance of not less than 50kΩ, balanced and 20kΩ unbalanced, and a maximum input level of not less than +22dBu and 1/4" TRS and XLR connectors. The output shall have an impedance of no more than 30Ω with a maximum output level of not less than +22dBm balanced and +20dBm unbalanced, into a minimum load impedance of 600Ω and 1/4” TRS and XLR type con- nectors.

Total Harmonic Distortion plus Noise shall be less than 0.1% with any amount of compression (up to 40dB) at 1kHz and Intermodulation Distortion shall be less than 0.1% SMPTE. The unit shall have an Equivalent Input Noise level of not more than -96dBu unweighted, and a dynamic range of not less than 118dB. Output gain adjustment shall be variable from -20 to +20dB. The compression threshold range shall be variable from -40 to +20dBu and compression ratio shall be variable from 1:1 to ∞:1. The peak limiter threshold range shall be variable from 0 to +24dBu. The compressor attack and release times shall be program dependent. The compression ratio characteristic shall be selectable for either the hard or soft knee curve type with a maximum compression of no less than 60dB. All input and output signal connections shall be via the rear panel. The channel-to-channel stereo links shall be of the true RMS summing type. Channel 1 shall link to Channel 2 and Channel 3 shall link to Channel 4 with channels 1 and 3 becoming the masters. The unit shall have the following front panel switches for each channel, with each switch incorporating an integral LED to signal selection of that switch: OverEasy, I/O Meter, and Bypass. There shall also be one Stereo Link switch for each pair of channels. Each channel shall have the fol-

Input

 

Function Switches

 

Connectors:

XLR and 1/4" TRS (Pin 2 and

OverEasy®:

Activates the OverEasy®

tip hot)

 

compression function.

 

Type:

Electronically balanced/unbal-

I/O Meter:

Switches between monitoring

anced, RF filtered

 

input and output

levels

Impedance:

Balanced > 40 kOhm, unbal-

on the Input/Output Level meter.

 

anced >20 kOhm

 

Bypass:

Activates the direct input-to-

Max Input Level:

> +22 dBu balanced or unbal-

output hard-wire

bypass.

anced

 

Operating Level

 

CMRR:

Typically >50 dB at 1 kHz

(rear panel):

Switches the nominal operat-

Output

 

 

ing level between -10 dBV

Connectors:

XLR and 1/4" TRS (Pin 2 and

 

and +4 dBu simultaneously

tip hot)

 

 

for both input and output lev-

Type:

Servo-balanced/unbalanced,

 

els.

RF filtered

 

 

 

Impedance:

Balanced 30 Ohm, unbal-

ST Link:

Links channels in stereo

anced 15 Ohm

 

pairs. Channels One

 

Max Output Level:

> +22 dBm balanced, > +20

 

and Three become the mas-

dBm unbalanced

 

ter channels.

 

System Performance

 

Indicators

 

Bandwidth:

20 Hz to 20 kHz, +0/-0.5 dB

Gain Reduction Meter:

8 segment LED bar graph at

Frequency Response:

0.35 Hz to 90 kHz, +0/-3 dB

 

1, 3, 6, 10, 15, 20,

Noise:

< -96 dBu, unweighted, 22

 

25, and 30 dB

 

kHz measurement bandwidth

Input/Ouptut Meter:

8-segment LED bar graph at

Dynamic Range:

> 118 dB, unweighted

 

-24, -18, -12, -6, 0,

THD+Noise:

0.008% typical at +4 dBu, 1

 

+6, +12, and +18 dBu

kHz unity gain

 

PeakStop®:

1 LED to indicate PeakStop®

 

0.08% typical at +20 dBu, 1

limiting

 

kHz, unity gain

 

Function Switches:

LED indicator for each front-

 

< 0.1% any amount of com-

panel switch

 

pression up to 40 dB,

1 kHz

Options

 

IMD:

< 0.1% SMPTE

Output Transformer

 

Interchannel Crosstalk:

< -80 dB 20 Hz to 20 kHz

Per Channel:

Jensen® JT-123-dbx or JT-

Stereo Coupling:

True RMS Power Summing

 

11-dbx, BCI™ RE-

Compressor

 

 

123-dbx or RE-11-dbx

Threshold Range:

-40 dBu to +20 dBu

Power Supply

 

Ratio:

1:1 to ∞:1

Operating Voltage:

Switchable: 100-120 VAC 50-

Threshold Characteristic:

Selectable OverEasy® or

 

60 Hz or 200-240 VAC 50/60

hard knee

 

 

Hz

Attack/Release Characteristic:

AutoDynamic™

Power Consumption:

20 Watts

Attack Time:

Program-dependent

Fuse:

100-120 VAC:250 mA Slow

Release Time:

Program-dependent

Blow

 

Output Gain:

-20 to +20 dB

 

200-240 VAC: 125 mA Type T

Limiter

 

Mains Connection:

IEC receptacle

Threshold Range:

0 dBu to +24 dBu (off)

 

 

Ratio:

∞:1

Physical

 

Limiter Type:

PeakStopPlus™ two-stage

Dimensions:

1.75"Hx19"Wx9"D

limiter

 

(4.4cmx48.3cmx20.1cm)

 

Stage 1:

PeakStop® brickwall limiter

Weight:

5.2 lbs. (2.4 kg)

Attack Time:

Zero

Shipping Weight:

7.6 lbs. (3.5 kg)

Release Time:

Zero

 

 

Stage 2:

Predictive intelligent program

 

 

limiter

 

 

 

Attack Time:

Program-dependent

 

 

Release Time:

Program-dependent

 

 

 

 

Note: Specifications subject to change.

 

lowing identical controls: compression Threshold, com-

pression Ratio, compression Output Gain, limiter Threshold; and the following identical metering and indicator LEDs for each channel: Gain Reduction (8 LEDs), Input or Output Level (8 LEDs), peak limiter active. There shall be a rear panel switch for each channel to select nominal input and output operating levels at -10dBV or +4 dBu. The unit shall be capable of accepting one compatible audio transformer installed for each channel. The power requirements shall be 100-120VAC 50/60Hz or 200- 240VAC, 50/60Hz, 20W, via a detachable IEC type AC cable. The size of the unit shall be 1.75" x 19" x 7.9" (4.4cm x 48.3cm x 20.1cm) with a net weight of 5.2 lbs (2.4 kg) and a shipping weight of 7.6 lbs (3.5 kg). The 1U high, full rack width 4 channel compressor/limiter shall be a dbx 1046.

dbx engineers are constantly working to improve the quality of our products. Specifications are, therefore subject to change without notice.

 

FOR MORE INFORMATION CONTACT:

®

dbx Professional Products • 8760 S. Sandy Pkwy. • Sandy, Utah 84070

 

Phone (801) 568-7660 • Fax (801) 568-7662 • Int’l Fax (801) 568-7583

 

customer@dbxpro.com • http://www.dbxpro.com

A Harman International Company

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dbx Pro 1046 manual Quad, Limiter
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