Dbx 1046 Quad Compressor/Limiter User Manual

dbx Pro 1046

The dbx Pro 1046 is a professional audio compressor and limiter that provides high-quality signal processing for a wide range of applications. With four independent channels, each featuring a comprehensive set of controls and features, the 1046 is an ideal tool for live sound reinforcement, studio recording, and broadcast production.

The 1046's compressors offer both classic dbx OverEasy® compression and hard-knee compression, giving you the flexibility to achieve a wide range of sonic effects. The PeakStopPlus™ limiters provide transparent protection against signal peaks, ensuring that your audio stays clean and distortion-free.

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1:1
2:1
-40 dBu +20
THRESHOLD
LIMITER
dBu OFF
PeakStopPlus
+4
-20 dB +20
OUTPUT GAIN
1:1
2:1
COMPRESSOR
I/O Meter
RATIO
:1
OverEasy
-10
8:1
4:1
+10 1.5:1
-20
Bypass - hard wire bypass allows you to hear how the compressor is affecting your signal.
Bypass
LIMITER
dBu OFF
PeakStopPlus
+4
-20 dB +20
OUTPUT GAIN
+20 -30
I/O Meter
:1
RATIO
1:1
OverEasy
COMPRESSOR
+14
+10
+6
+10
-10
8:1
4:1
2:1
+10 1.5:1
-40 dBu +20
THRESHOLD
0
-20
All four channels feature balanced gold plated XLR and 1/4&quot; inputs and outputs, and switchable +4dBu or -10dBV
operating level to interface each individual channel with any other device.
So whether you need to control the level, placement in the mix, or overall characteristics of 4 independent signals or
control the gain leveling on a couple of stereo pairs, the dbx1046 is for you.
LIMITER
dBu OFF
PeakStopPlus
+4
Bypass
+10
+6
+10
-20 dB +20
OUTPUT GAIN
1:1
OverEasy
-40 dBu +20
THRESHOLD
-30
PROFESSIONAL PRODUCTS
COMPRESSOR
RATIO
:1
I/O Meter
-10
4:1
8:1
+10 1.5:1
0
2:1
Input/Output Meter - allows you to set the meter to check the input and output levels for maximum signal-to-noise
ratio and best level matching.
Output Gain - allows you to add make-up gain or to adjust the output level for that channel to match the next device’s
input gain.
-40 dBu +20
THRESHOLD
0
Ratio - allows you to set the slope of gain reduction affecting the signal over the threshold level.
+20 -30
Stereo
Couple
+14
+12
0
-20
All four channels have the following controls:
Threshold - allows you to set the level at which the compressor starts affecting the gain
OverEasy&reg; - allows you to select between soft compression for overall gain control or hard-knee compression based
on the characteristics of the original dbx160.
Bypass
+10
+6
+10
0
3:1
CHANNEL THREE
-10
+12
0
The 1046 provides 4 channels of smooth classic dbx OverEasy&reg; or hard knee compression that are perfectly suited
for use on individual tracks of your multitrack recorder, and in virtually all applications the separate channels can be
individually interfaced and used for entirely independent purposes. Additionally the newly developed
PeakStopPlus™ is ideal for protecting your system from the oppressive peaks that can take out valuable drivers in
your sound reinforcement rig or studio monitors.
Stereo Link - allows you to link channels 1&amp;2 and 3&amp;4 for two channels of true stereo compression.
3:1
CHANNEL TWO
-10
In today’s recording and sound reinforcement environments, the need for multiple channels of high quality, easy to
use compression is growing rapidly. The new dbx 1046 is designed to provide the audio professional with just that:
4 channels of great sounding dbx compression for a variety of applications. Incorporating the industry standard dbx
designs and the latest available manufacturing techniques, the dbx 1046 provides pristine sonic quality with that classic dbx sound.
PeakStopPlus™ - allows you to set the maximum signal level you want to pass through this channel. While it’s virtually impossible to eliminate distortion, the PeakStopPlus™ circuit does it gracefully and effectively with minimal
distortion.
3:1
-10
CHANNEL ONE
COMPRESSOR
I/O Meter
RATIO
:1
OverEasy
-10
8:1
4:1
+10 1.5:1
0
-20
+20 -30
Stereo
Couple
+14
+12
+
THRESHOLD
+18
+12
+6
0
-6
-12
-18
INPUT / OUTPUT LEVEL dBu
-24
1
3
6
10
15
20
GAIN REDUCTION dB
25
30
+
THRESHOLD
+18
+12
+6
0
-6
-12
-18
INPUT / OUTPUT LEVEL dBu
-24
1
3
6
10
15
20
GAIN REDUCTION dB
25
30
+
THRESHOLD
+18
+12
+6
0
-6
-12
-18
INPUT / OUTPUT LEVEL dBu
-24
1
3
6
10
15
GAIN REDUCTION dB
20
30
25
LIMITER
dBu OFF
PeakStopPlus
+4
-20 dB +20
OUTPUT GAIN
0
3:1
CHANNEL FOUR
-10
1
3
6
10
15
20
30
25
GAIN REDUCTION dB
Bypass
+10
+10
+6
+
+12
+12
+6
0
-6
-12
-18
-24
INPUT / OUTPUT LEVEL dBu
+18
THRESHOLD
+14
+20
1046
Quad
Compressor/
Limiter
&reg;
• 4 independent channels of operation, stereo linkable
in two pairs.
• PeakStopPlus™ limiting control for setting maximum
allowable level regardless of compressor settings.
• Switchable OverEasy&reg; or hard-knee compression.
• Selectable Auto (classic dbx) or manual (variable
Attack and Release) compression
• Differentially balanced gold-plated XLR and 1/4”
inputs and outputs.
• True RMS level detection
• Precision metering of input level, output level, and
gain reduction
• Dual True stereo or quad mono operation
• Switchable +4dBu or -10dBV operation per channel
8760 S. Sandy Pkwy.
Sandy, Utah 84070
Phone (801) 568-7660
Fax (801) 568-7662
Int’l Fax (801) 568-7583
[email protected]
http://www.dbxpro.com
A Harman International Company
18-1689-C 01/99
1046
QUAD COMPRESSOR
GAIN REDUCTION dB
30
-20
25
-10
20
15
10
6
INPUT / OUTPUT LEVEL dBu
3
CHANNEL ONE
0
1
-24
-18
3:1
2:1
-12
-6
0
+6
:1
RATIO
COMPRESSOR
-20
+14
+10
25
-10
20
15
10
6
INPUT / OUTPUT LEVEL dBu
3
CHANNEL TWO
0
1
-24
+20 -30
Stereo
Couple
Bypass
-20 dB +20
OUTPUT GAIN
-18
-12
3:1
-6
0
+6
2:1
dBu OFF
PeakStopPlus
:1
RATIO
+12
15
10
6
INPUT / OUTPUT LEVEL dBu
3
CHANNEL THREE
0
1
-24
-18
3:1
2:1
-12
-6
0
+6
+20 -30
-40 dBu +20
THRESHOLD
dBu OFF
PeakStopPlus
LIMITER
+4 dBu
-10 dBV
+14
:1
-20
25
-10
20
15
10
6
INPUT / OUTPUT LEVEL dBu
3
CHANNEL FOUR
0
1
-24
2:1
-6
0
+6
dBu OFF
PeakStopPlus
OUTPUTS
THRESHOLD
+12
+14
+10
+10
+6
8:1
I/O Meter
1:1
+
+18
4:1
OverEasy
-40 dBu +20
THRESHOLD
+4
+12
0
+10 1.5:1
LIMITER
:1
RATIO
+20
Bypass
-20 dB +20
OUTPUT GAIN
COMPRESSOR
+4
dBu OFF
PeakStopPlus
1046
Quad
Compressor/
Limiter
LIMITER
CHANNEL ONE
INPUTS
OPERATING
LEVEL
-12
-10
+20 -30
Stereo
Couple
Bypass
-20 dB +20
OUTPUT GAIN
-18
3:1
CHANNEL TWO
INPUTS
OPERATING
LEVEL
+12
+10
RATIO
30
+6
I/O Meter
1:1
GAIN REDUCTION dB
+
+10
8:1
COMPRESSOR
OUTPUTS
THRESHOLD
+18
4:1
+10 1.5:1
OverEasy
+4
+12
0
CHANNEL THREE
INPUTS
+4 dBu
-10 dBV
-10
20
-10
-20 dB +20
OUTPUT GAIN
CHANNEL FOUR
OPERATING
LEVEL
-20
+14
+10
25
Bypass
COMPRESSOR
OUTPUTS
30
+6
I/O Meter
1:1
GAIN REDUCTION dB
+
+10
8:1
OverEasy
LIMITER
THRESHOLD
+18
4:1
+10 1.5:1
-40 dBu +20
THRESHOLD
+4
+12
0
-10
+6
I/O Meter
1:1
30
+10
8:1
OverEasy
-40 dBu +20
THRESHOLD
+
+12
4:1
+10 1.5:1
GAIN REDUCTION dB
THRESHOLD
+18
0
-10
-30
PROFESSIONAL PRODUCTS
+12
OUTPUTS
+4 dBu
-10 dBV
INPUTS
OPERATING
LEVEL
+4 dBu
-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 channels, 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&quot; 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 connectors.
Input
Connectors:
tip hot)
Type:
anced, RF filtered
Impedance:
anced &gt;20 kOhm
Max Input Level:
anced
CMRR:
Output
Connectors:
tip hot)
Type:
RF filtered
Impedance:
anced 15 Ohm
Max Output Level:
dBm unbalanced
System Performance
Bandwidth:
Frequency Response:
Noise:
XLR and 1/4&quot; TRS (Pin 2 and
Electronically balanced/unbalBalanced &gt; 40 kOhm, unbal&gt; +22 dBu balanced or unbalTypically &gt;50 dB at 1 kHz
Function Switches
OverEasy&reg;:
compression function.
I/O Meter:
input and output
on the Input/Output Level meter.
Bypass:
output hard-wire
Operating Level
(rear panel):
XLR and 1/4&quot; TRS (Pin 2 and
Servo-balanced/unbalanced,
Balanced 30 Ohm, unbal-
ST Link:
pairs. Channels One
&gt; +22 dBm balanced, &gt; +20
Activates the OverEasy&reg;
Switches between monitoring
levels
Activates the direct input-tobypass.
Switches the nominal operating level between -10 dBV
and +4 dBu simultaneously
for both input and output levels.
Links channels in stereo
and Three become the mas-
ter channels.
Total Harmonic Distortion plus Noise shall be less than
Indicators
20 Hz to 20 kHz, +0/-0.5 dB
Gain Reduction Meter:
8 segment LED bar graph at
0.1% with any amount of compression (up to 40dB) at
0.35 Hz to 90 kHz, +0/-3 dB
1, 3, 6, 10, 15, 20,
&lt;
-96
dBu,
unweighted,
22
25, and 30 dB
1kHz and Intermodulation Distortion shall be less than
kHz measurement bandwidth
Input/Ouptut Meter:
8-segment LED bar graph at
0.1% SMPTE. The unit shall have an Equivalent Input
Dynamic Range:
&gt; 118 dB, unweighted
-24, -18, -12, -6, 0,
THD+Noise:
0.008% typical at +4 dBu, 1
+6, +12, and +18 dBu
Noise level of not more than -96dBu unweighted, and a
kHz unity gain
PeakStop&reg;:
1 LED to indicate PeakStop&reg;
dynamic range of not less than 118dB. Output gain
0.08% typical at +20 dBu, 1
limiting
kHz, unity gain
Function Switches:
LED indicator for each frontadjustment shall be variable from -20 to +20dB. The
&lt; 0.1% any amount of companel switch
Options
pression
up
to
40
dB,
1
kHz
compression threshold range shall be variable from -40 to
Output Transformer
IMD:
&lt; 0.1% SMPTE
+20dBu and compression ratio shall be variable from 1:1
Per Channel:
Jensen&reg; JT-123-dbx or JTInterchannel Crosstalk:
&lt; -80 dB 20 Hz to 20 kHz
11-dbx, BCI™ REStereo Coupling:
True RMS Power Summing
to ∞:1. The peak limiter threshold range shall be variable
Compressor
123-dbx or RE-11-dbx
from 0 to +24dBu. The compressor attack and release
Threshold Range:
-40 dBu to +20 dBu
Power Supply
Ratio:
1:1 to ∞:1
Operating Voltage:
Switchable: 100-120 VAC 50times shall be program dependent. The compression ratio
Threshold Characteristic:
Selectable OverEasy&reg; or
60 Hz or 200-240 VAC 50/60
hard knee
Hz
characteristic shall be selectable for either the hard or soft
Attack/Release Characteristic:
AutoDynamic™
Power Consumption:
20 Watts
knee curve type with a maximum compression of no less
Attack Time:
Program-dependent
Fuse:
100-120 VAC:250 mA Slow
Release Time:
Program-dependent
Blow
than 60dB. All input and output signal connections shall
Output Gain:
-20 to +20 dB
200-240 VAC: 125 mA Type T
be via the rear panel. The channel-to-channel stereo links
Limiter
Mains Connection:
IEC receptacle
Threshold Range:
0 dBu to +24 dBu (off)
shall be of the true RMS summing type. Channel 1 shall
Ratio:
∞:1
Physical
Limiter Type:
PeakStopPlus™ two-stage
Dimensions:
1.75&quot;Hx19&quot;Wx9&quot;D
link to Channel 2 and Channel 3 shall link to Channel 4
limiter
(4.4cmx48.3cmx20.1cm)
with channels 1 and 3 becoming the masters. The unit
Stage 1:
PeakStop&reg; brickwall limiter
Weight:
5.2 lbs. (2.4 kg)
Attack Time:
Zero
Shipping Weight:
7.6 lbs. (3.5 kg)
shall have the following front panel switches for each
Release Time:
Zero
channel, with each switch incorporating an integral LED
Stage 2:
Predictive intelligent program
limiter
to signal selection of that switch: OverEasy, I/O Meter,
Attack Time:
Program-dependent
Release Time:
Program-dependent
and Bypass. There shall also be one Stereo Link switch
Note: Specifications subject to change.
for each pair of channels. Each channel shall have the following identical controls: compression Threshold, compression 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 200240VAC, 50/60Hz, 20W, via a detachable IEC type AC cable. The size of the unit shall be 1.75&quot; x 19&quot; x 7.9&quot; (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:
&reg;
A Harman International Company
dbx Professional Products • 8760 S. Sandy Pkwy. • Sandy, Utah 84070
Phone (801) 568-7660 • Fax (801) 568-7662 • Int’l Fax (801) 568-7583
[email protected] • http://www.dbxpro.com
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