The dbx 560A Compressor/Limiter is designed to offer VCA-based compression in the renowned 500 series format. Featuring switch-selectable OverEasy and hard Knee compression from the dbx 160A rackmount processor the dbx 560A is designed to be the keystone compression unit in your rack. The 19-segment switchable input/output LEDs and 12-segment Gain Reduction LEDs deliver precise monitoring in an easily accessible format. A unique feature to the 560A is the INFINITY + inverse-compression mode which decreases the audio output level below unity gain which helps to correct and control mix levels.
OverEasy and Hard-Knee Compression One of the reasons this compression/limiter unit is so well received is the unique OverEasy compression allowing for smooth-sounding compression that delivers a more natural feel over a range of dynamic sources. This form of compression is ideal for varying dynamic sources such as vocals or stringed instruments. The classic hard-knee compression provides a reversion to the vintage sounding compression helping to control more transient audio such as that from drums and pianos. The 500 Series dbx has a long and venerated past with modular processors dating back to the classic 900 series which are still mainstays in many professional recording studios. The new 500 Series modules continue that tradition offering legendary dbx processing with modern design. Features OverEasy® or classic hard knee compression with dbx’s ultra-musical program dependent attack and release times Compression ratio variable from 1:1 through infinity:1 to -1:1 Precise RMS gain reduction and input/output meter displays with calibration control for different operating levels True RMS level detection Exclusive Infinity+ compression using negative ratios Specifications Input Type: Electronically balanced/unbalanced RF filtered Input Impedance: 40kΩ balanced 20kΩ unbalanced Maximum Input Level: +22dBu CMRR: >40 dB; typically >55 dB at 1 kHz Output Type: Electronically balanced/unbalanced RF filtered Output Impedance: Balanced 30Ω unbalanced 15Ω Maximum Output Level: +22dBu Frequency Response: 20 Hz – 20 kHz + 0/-0.5 dB; 0.5 Hz – 100 kHz +0/-3 dB Noise: THD+Noise: Dynamic Range: >119 dB Compression Gain Adjustment Range: Variable from -20 dB to +20 dB Compressor Threshold Range: -40 dBu to +20 dBu Compressor Threshold Characteristic: Selectable OverEasy® or Hard Knee Compressor Ratio: Variable 1:1 to ∞ :1 thru to -1:1; 60dB Maximum Compression Compressor Attack Time: Program-Dependent; Typically 15ms for 10dB 5ms for 20dB 3ms for 30dB Compressor Release Time: Program-Dependent; Typically 8ms for 1dB 80ms for 10dB 400ms for 50dB; 125dB/Sec Rate Power Requirements: +/- 16VDC Current Draw: 60mA per power rail Power Draw: 1.92 watts Rack System Compatibility: 500 Series Compatible Power-frame Rack Space: 1 Slot Dimensions (H x W x D): 5.25” x 1.5” x 6” (13.34cm x 3.81cm x 15.24cm) Weight: 1.3 lbs (0.59 kg) Shipping Weight: 1.7 lbs (0.77 kg) Dbx Recording-and-Computers 1ACU
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dbx 560A Compressor/Limiter