DBX 1046
Quad Compressor / Limiter

OUR PART #  1046

In today's recording and sound reinforcement environments, the need for multiple channels of high quality, easy to use, compression is growing rapidly.  The 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.

The 1046 provides 4 channels of smooth classic dbx OverEasy® 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, 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.  All four channels feature balanced gold-plated XLR and 1/4" 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.

dbx 1046 Controls (Applies to all four channels):

  • Threshold -allows you to set the level at which the compressor starts affecting the gain
  • OverEasy® - allowsyou to select between soft compression for overall gain control or hard-knee compression based on the famous curve found in the original dbx160
  • Ratio - allowsyou to set the slope of gain reduction affecting the signal over the threshold level.
  • 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 - allowsyou to add make-up gain or to adjust the output level for that channel to match the next device's input gain
  • Bypass - hardwire bypass allows you to hear how the compressor is affecting your signal
  • PeakStopPlus - allows youto 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.
  • Stereo Link -allows you to link channels 1&2 and 3&4 for two channels of true stereo compression

dbx 1046 Features:

  • Four independent channels of operation, stereo linkable in two pairs
  • PeakStopPlus™ limiting control for setting maximum allowable level regardless of compressor settings
  • Independent Threshold and ratio controls
  • Switchable OverEasy® or Hard Knee compression
  • Classic dbx® 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
dbx 1046 Specifications:
  • Input Connectors:
    • XLR and 1/4" TRS (Pin 2 and tip hot)
    • Type: Electronically balanced/unbalanced, RF filtered
    • Impedance: Balanced > 40 kOhm, unbalanced >20 kOhm
    • Max Input Level: > +22 dBu balanced or unbalanced
    • CMRR: Typically >50 dB at 1 kHz
    • Output Connectors: XLR and 1/4" TRS (Pin 2 and tip hot)
    • Type: Servo-balanced/unbalanced, RF filtered
    • Impedance: Balanced 30 Ohm, unbalanced 15 Ohm
    • Max Output Level: > +22 dBm balanced, > +20 dBm unbalanced
  • System Performance:
    • Bandwidth: 20 Hz to 20 kHz, +0/-0.5 dB
    • Frequency Response: 0.35 Hz to 90 kHz, +0/-3 dB
    • Noise: < -96 dBu, unweighted, 22 kHz measurement bandwidth
    • Dynamic Range: > 118 dB, unweighted
    • THD+Noise:
      • 0.008% typical at +4 dBu, 1 kHz unity gain
      • 0.08% typical at +20 dBu, 1 kHz, unity gain
      • < 0.1% any amount of compression up to 40 dB, 1 kHz
    • IMD: < 0.1% SMPTE
    • Interchannel Crosstalk: < -80 dB 20 Hz to 20 kHz
    • Stereo Coupling: True RMS Power Summing
  • Compressor:
    • Threshold Range: -40 dBu to +20 dBu
    • Ratio: 1:1 to :1
    • Threshold Characteristic: Selectable OverEasy® or hard knee
    • Attack/Release Characteristic: AutoDynamic
    • Attack Time: Program-dependent
    • Release Time: Program-dependent
    • Output Gain: -20 to +20 dB
  • Limiter:
    • Threshold Range: 0 dBu to +24 dBu (off)
    • Ratio: 1:1 to inf.:1
    • Limiter Type: PeakStopPlus two-stage limiter
    • Stage 1: PeakStop® brickwall limiter
    • Attack Time: Zero
    • Release Time: Zero
    • Stage 2: Predictive intelligent program limiter
    • Attack Time: Program-dependent
    • Release Time: Program-dependen
  • Function Switches:
    • OverEasy®: Activates the OverEasy® compression function
    • I/O Meter: Switches between monitoring input and output levels on the Input/Output Level meter
    • Bypass: Activates the direct input-to-output hard-wire bypass
    • Operating Level (rear panel): Switches the nominal operating level between -10 dBV and +4dBu simultaneously for both input and output levels
    • ST Link: Links channels in stereo pairs. Channels One and Three become the master channels
  • Indicators:
    • Gain Reduction Meter: 8 segment LED bar graph at 1, 3, 6, 10, 15, 20,25, and 30 dB
    • Input/Ouptut Meter: 8-segment LED bar graph at -24, -18, -12, -6, 0,+6, +12, and +18 dBu
    • PeakStop®: 1 LED to indicate PeakStop® limiting
    • Function Switches: LED indicator for each front-panel switch
  • Options:
    • Output Transformer
    • Per Channel: Jensen® JT-123-dbx or JT-11-dbx, BCI RE- 123-dbx or RE-11-dbx
  • Power Supply:
    • Operating Voltage: Switchable: 100-120 VAC 50-60 Hz or 200-240 VAC 50/60 Hz
    • Power Consumption: 20 Watts
    • Fuse: 100-120 VAC:250 mA Slow Blow
    • 200-240 VAC: 125 mA Type T
    • Mains Connection: IEC receptacle
  • Physical:
    • Dimensions: 1.75" H x 19" W x 9" D (4.4 x 48.3 x 20.1 cm)
    • Weight: 5.2 lbs. (2.4 kg)
    • Shipping Weight: 7.6 lbs. (3.5 kg)
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