Aphex Model 622 Stereo Expander & Noise Gate

Aphex Model 622 Stereo Expander & Noise Gate

The Aphex Model 622 is the next generation beyond the Model 612. The latest creation for your audio applications is a versatile expander, gate, and ducker. You may use it for reducing or virtually eliminating noise in recording, effects and sound styles. For sound reinforcement applications, it will automatically mute unused open mikes, increasing the dynamic range of the system, and reducing feedback

Two channels of downward expansion provide a powerful addition to your studio or personal equipment rack. You've got a comprehensive set of controls which will allow you to adjust the expansion curves to suit a variety of applications, as well as creating useful and dramatic audio effects.

Features:

• Logic Assisted
• Quality Components And Design
• Two Independent Channels
• Balanced Input And Output Circuits
• Front Panel Controls
• Inside The Unit - four PCB's (Printed Circuit Boards)

Specifications:

• Inputs
  • Type: RF filtered, true instrumentation differential balanced
  • Input Impedance: 22 kohms, balanced
  • Nominal Operating Level: + 4dBu, switchable to -lOdBV
  • Maximum Input Level: +27 dBu, +15dBv in -10 mode
  • CMRR: Better than 60dB at lOkHz
• Sidechain
  • Gain Reduction Element: APHEX VCAlOOl
  • Key Input Impedance: S0kohms unbalanced
  • Key Output Impedance: 150 Ohms, unbalanced
  • Maximum Key Level: +21 dBu
• Outputs
  • Type:
    • Electronically servo-balanced, transformerless
    • May be operated single- ended or balanced
  • Output Impedance: 65 Ohms balanced or unbalanced
  • Maximum Output Level:
    • At +4 mode, +27dBu balanced, +21 dBu.
    • unbalanced
  • Bandwidth: 5 Hz to lO0kHz, +0, -0.2dB
  • THD@ +20dBu: 0.006%
  • THD@+4dBu: 0.003%
  • IMD (SMPTE}@ + lOdBu: 0.006%
  • Noise & Hu,1n, unity gain: -87dBu
  • Noise & Hum, fully off: -94dBu
  • Crosstalk@ 20kHz: -76dBu worst case
• Controls
  • Threshold: -50dBu to +20dBu
  • Attack time: FAST (10µ,S) to SLOW (lO0mS)
  • Hold: 10mS to 4 seconds
  • Release: 40mS to 4 seconds
  • Ratio: 1.2:1 to 10:1
  • Range: 0 to 100dB
  • Frequency: 30Hz to 12kHz
  • Bandwidth: 1.7 to 9 .2dB / octave at 24dB / octave
• Function Switches
  • Filter IN/ OUT
  • Channel IN/ OUT
  • Duck
  • Expand
  • Key Listen
  • Key External
  • Master/Slave Link
• Indicators
  • Status is 2 LED "traffic light" display showing
  • Closed (below threshold)
  • Open (above threshold)
  • One LED indicator for each function switch
• Power Requirements And Connections
  • 90-250 VAC 50-60Hz, 25 Watts
  • AC power connection: IEC standard, with integral fuse, voltage select and RF filter.
• Physical Specifications
  • Size:
    • 1 3 / 4 inches ( 44.5mm) high
    • 19 inches (482.6mm) wide
    • 9 inches (228.6mm) deep
  • Weight: 7 lb. (3.17kG)
  • Shipping Weight: 8.5 lb. (3.85kG)