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dbx 1066 Limiter/Gate/Compressor

This unit is designed for perfectly simple operation on the road with a P.A. system or in the studio or broadcast facility. It eliminates unwanted signals, flexibly controls overall signal gain, and guards overall mix in dual mono or stereo operation.

Classic dbx response is available at the touch of the "Auto" button, or independent Attack and Release controls tailor the 1066 to other specific needs. Unwanted frequencies or mic bleed in the signal path? Frequency dependent gain control is a snap to set up and execute with Side Chain External button (SC Ext). Use the Side Chain Monitor button (SC Mon) and your favorite EQ to dial in the specific frequencies you want to trigger the device. The contour switch allows entire mixes to be easily smoothed with soft compression. Selectable input and output metering allow matching of all levels, maximizing signal-to-noise ratio.

For overall speaker protection, PeakStopPlus™ keeps unwanted transients from blowing drivers, while minimizing the distortion common to many other "hard" limiters. Selectable Hard-Knee or OverEasy® characteristics make the 1066 ideal for gain control needs, whether with "heavy" almost-special-effects compression or soft, smooth gain leveling. New lightpipe technology replaces standard LEDs found on most other units, making the 1066 both easy to read and easy to operate.

Product Weight:  5.1 lbs
Dimensions:  1.75"H x 19"W x 9"D (1RU)

Technical Tools

Manufacturer Specs

Connectors: XLR and 1/4" TRS (Pin 2 and tip hot)
Type: Electronically balanced/unbalanced, RF filtered
Impedance: Balanced > 50 kOhm, unbalanced >25 kOhm
Maximum Input Level: > +24 dBu balanced or unbalanced
CMRR: Typically >50 dB at 1 kHz


Connectors: XLR and 1/4" TRS (Pin 2 and tip hot)
Type: Servo-balanced/unbalanced, RF filtered
Impedance: >Balanced 120 Ohm, unbalanced 60 Ohm
Max Output Level: > +21 dBm balanced, > +20 dBm unbalanced

Sidechain Input

Connector: 1/4" TS
Type: Unbalanced, RF filtered
Impedance: >10 kOhm
Max Input Level: >+24 dBu

Sidechain Output
Connector: 1/4" TRS (tip hot)
Type: Impedance balanced, RF filtered
Impedance: Balanced 2 kOhm, unbalanced 1 kOhm
Max Input Level: >+21 dBu balanced or 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: > 118dB, 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: < -80dB, 20 Hz to 20 kHz
Stereo Coupling: True RMS Power Summing™


Threshold Range: -40 dBu to +20 dBu
Ratio: 1:1 to infinity:1
Threshold Characteristic: Selectable OverEasy® or hard knee
Attack/Release Chracteristic:  Auto Dynamic™
Attack/Release Modes: Selectable Manual or Auto
Manual Attack Time: Scalable program-dependent
Manual Release time: Scalable program-dependent
Auto Attack Time: Program-dependent
Auto Release Time: Program-dependent
Output Gain: -20 to +20 dB

Threshold Range: +4 dBu to +24 dBu (off)
Ratio: infinity: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-dependent

Threshold Range: Off to +15dBu
Ratio: 1:1 to 30:1
Attack Time: < 100 µsec
Release Time: Program-dependent

Function Switches
SC Ext.: Routes the external sidechain input signal to the detector
SC Mon: Routes the sidechain signal to the output, interrupting the normal audio
OverEasy®: Activates the OverEasy compression function
Contour: Activates the frequency-dependent detector function
Auto: Activates automatic program-dependent attack and release times, disabling the manual Attack and Release controls
I/O Meter: Switches between monitoring input and output levels on the Input/Output Level meter
Bypass: Activates direct input-to-output hard-wire relay, bypassing unit at power-down; provides a power-on delay of 1.5 sec.
Operating Level (rear panel): Switches the nominal operating level between -10 dBV and +4 dBu simultaneously for both input and output levels
ST Link: Link both channels for stereo operation. Channel One becomes the master

Gain Reduction Meter: 12-segment LED bar graph at 1, 2, 4, 6, 9, 12, 15, 18, 21, 24, 27 and 30 dB
Input/Output Meter: 8-segment LED bar graph at -24, -18, -12, -6, 0, +6, +12, and +18 dBu
Compressor Threshold Meter: 3-segment LED bar graph at Below (-), OverEasy and Above (+)
Exp/Gate Threshold Meter: 2-segment LED bar graph at Below (-) and Above (+)
Limiter, Threshold Meter: 1 LED to indicate PeakStopPlus™ 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
   100-120 VAC, 50/60 Hz
   200-240 VAC. 50/60 Hz
Power Consumption: 20 Watts
   100-120 VAC: 250 mA Slow Blow
   200-240 VAC: 125 mA Type T
Mains Connection: IEC receptacle

Dimensions: 1.75"H x 19"W x 9"D (4.4 x 48.3 x 20.1 cm)
Weight: 5.1 lbs. (2.3 kg)

Note:  Specifications subject to change without notice.