MODEL 1046 Operation Manual
Contents Introduction................................................................................. 2 Inspection..................................................................................... 2 Warranty...................................................................................... 2 Connecting the 1046 to your system........................................... 3 Operating Controls....................................................................... 3 Rear Panel Operations...................
Introduction Congratulations and thank you for your purchase of the dbx 1046 Quad Compressor Limiter. The dbx 1046 is a high performance multifunctional unit designed to deliver all the flexibility and power that a professional user demands. The dbx 1046 incorporates the new advanced dbx V2™ VCA for high system performance. We recommend you take a moment to read through this Operation manual. It provides information that will assist you in system set-up.
Connecting the 1046 to your system To connect the 1046 to your system, refer to the following steps: • Turn off all equipment before making any connections. • Mount the 1046 in a rack I nstall the 1046 in a rack with the rack screws provided. It can be mounted above or below anything that does not generate excessive heat. Ambient temperatures should not exceed 113˚ F (45˚ C) when equipment is in use.
1:1 OUTPUT LEVEL (dB) +20 +15 2:1 +10 4:1 +5 0 AM −5 R BE :1 RED Above Threshold OverEasy Range G RE EN OverEasy® Switch - OverEasy® provides a smooth transition from the compressor’s linear region to the −15 Threshold compressed region. ThisBelow smooth transition greatly reduces compression artifacts and allows higher compression ratios while still −15 maintaining characteristics of the signal.
Input/Output Meter Switch - This switch selects the signal for metering by the INPUT/OUTPUT LEVEL METER. The switch lights indicating the input signal is currently being sent to the meter. When the switch is in the out position, the output signal is selected for metering, and the switch will not be illuminated. Output Gain Control - This control sets the output gain of the compressor. It can be continuously adjusted between -20 dB and +20 dB.
Output Signal } Input Signal Intelligent Predictive Limiting™ Attack Time 2 dB Typically Release Time Output Signal Time Figure 3: Protective Action of the PeakStopPlus™ Limiter Stereo Couple Switch - These switches change the 1046 from four independent compressors into two stereo compressors. In stereo mode, Channel 1 is the master and Channel 2 is its slave, and Channel 3 is the master and channel 4 is its slave.
Audio Outputs - Each channel features both XLR and 1/4” TRS servo-balanced outputs. Outputs may be used in a balanced or unbalanced configuration. Unlike the inputs both the XLR and the 1/4” outputs may be used simultaneously. An output transformer option is available when very long cable distances are required (see “Specifications”). Operating Level Switch - This switch selects between a -10 dBV and +4 dBu nominal operating level.
damaging drivers in a sound-reinforcement system (whether you’re doing auditorium, church, or club sound engineering, or are a mobile DJ, or like to push the limits of your home’s audio entertainment center). Set the 1046 for limiting (Hard Knee mode On, with a RATIO of 10:1 or greater) and adjust the THRESHOLD to provide 15 dB or more of compression (just a few dB below the input clip).
Specifications Input Connectors: Type: Impedance: Max Input Level: CMRR: Output Connectors: Type: Impedance: Max Output Level: Female XLR and 1/4” TRS (Pin 2 and tip hot) Electronically balanced/unbalanced, RF filtered Balanced > 50 kΩ, unbalanced >25 kΩ > +24 dBu balanced or unbalanced 40 dB; Typically >55 dB at 1 kHz Male XLR and 1/4” TRS (Pin 2 and tip hot) Servo-balanced/unbalanced, RF filtered Balanced 60Ω, unbalanced 30Ω > +21 dBu, >+20 dBm balanced/unbalanced System Performance Bandwidth: 20
Power Supply Operating Voltage: Factory selected: 100-120 VAC 50/60 Hz or 200-240 VAC 50/60 Hz Power Consumption: 30 Watts Fuse: 100-120 VAC: T 300 mA L 250V 200-240 VAC: T 160 mA L 250V Mains Connection: IEC receptacle Physical Dimensions: 1.75” H x 19” W x 9” D 44.5 x 483 x 229 mm Weight: 7.4 lbs. 3.4 kg Shipping Weight: 9.8 lbs. 4.4 kg Options Output Transformer Per Channel: Jensen® JT-123-dbx or BCI™ RE-123-dbx Note: Specifications subject to change.
