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Item #:MO10100
Condition:Reference Item
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Model Description:
Dual Mono/Stereo Compressor/Leveler/Limiter

Model Details

The Aphex Model 320A delivers intelligent compressor action, leveling and peak limiting simultaneously. This intelligent, versatile and highly affordable processor can be used to solve audio level problems and improve audio signals in the broadcast studio, recording studio, tape duplication house, film dubbing studio and in live sound applications. Patented control circuits include analog computers that continuously analyze the input signal and vary the control characteristics to provide for virtually undetectable operation, regardless of the dynamics of the program.

Additional Detailed Information:


Nominal Operating Level

(User selectable on back)+8dBu+4dBu-10 dBV
Connector:3 pin XLR female, Pin 1-ground (chasis), Pin 2-hot, Pin 3-low
Type:Transformerless, differential servo-balanced passive 4th order RF filter
Impedance:22k-ohms balanced, 11k-ohms unbalancedsamesame
Nominal Level:+8dBu+4dBu-10dBV (-7 8dBu)
Maximum Input Level:+27dBu+25dBu+10.8dBV (+13dBu)
CMRR:>9OdB/100Hz, >70dB/1khz, >50dB/20KHzsamesame
Connector:3 pin XLR male, Pin 1-ground (chasis), Pin 2-hot, Pin 3-low
Type:Transformerless, differential servo-balanced (may be used unbalanced without 6dB loss)
Impedance:65-ohms balanced/unbalanced (Nominal Load Impedance: 600-ohms or greater)
Maximum Output Level balanced:+26dBu+25dBu+10.8dBV (+13dBu)
Maximum Output Level unbalanced:+21dBu+20dBu+10.8dBV (+13dBu)
Frequency Response:±1 dB from 10Hz to 65kHzsamesame
Hum and Noise @ Unity Gain
No Gain Reduction:-64dBu-67dBu-78dBu
10dB Gain Reduction:-68dBu-74dBu-81 dBu
Crosstalk @ 20 kHz:-60dBu-65dBu-70dBu
Dynamic THD (1kHz, 20dB G.R.):.05%samesame
THD @ (Max.Output):.025%samesame
IMD (SMPTE) @ (Max Output):.12%.13%.4%
System Functions
Compression, Frequency Discriminate Leveler, Peak Limiter, Dynamic Verification Gate (DVG), Dynamic Recovery Computer (DRC), Silence Gate, Stereo Enhance
Threshold (0 VU with DRIVE full clockwise)
Compressor:30dB below nominal level
Leveler:30dB below nominal level
Limiter:12dB above nominal level
Compressor:1.1:1 to 3:1 Program Dependent
Attack Times (For 20dB Gain Reduction)
Compressor:5 to 50mSec Program Dependent
Leveler, Fast:20Hz = 3Sec >1 kHz = 1.5Sec. Frequency Dependent Leveler (FDL)
Leveler, Slow:20Hz = 10Sec >1 kHz = 5Sec. Frequency Dependent Leveler (FDL)
Release Times (For Recovery From 20dB Gain Reduction)
Compressor:200mSec to 1Sec Program Dependent
Leveler, Fast:3 Sec
Leveler, Slow:10 Sec
Controls, Function Switches & Metering
(See front panel illustration)
Other Specifications
AC Input:IEC standard receptacle with voltage selector & RF filter.
Power Requirements:100-120-220-240VAC, 50-60Hz
Power Consumption (maximum):20 watts
Dimensions:19" W x 1.75" H x 1 C 125" overall depth, depth behind front panel: 9.25"
Net Weight:8 Ibs.
Compellor, Frequency Discriminate Leveler, Dynamic Verification Gate and Dynamic Recovery Computer are trademarks of Aphex Systems, Ltd.

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