Aphex Systems 320A Installation, Remote Connector, Reference Level Setting, Input Connections

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320A

4. Installation

Compellor

 

Installation should be performed only by qualified individuals. It is the installer’s responsibility to insure his personal safety and the safety of others in the work area. It is never a good idea to work alone in the vicinity of high power electrical and radio frequency equipment.

4.10 Remote Connector

Remote control, a feature of the Models 320A and 323A.

4.11 Reference Level Setting

The Compellor should be normalized to match the operating level of your system. When the Compellor is properly matched to the system reference level, then the Compellor’s meters will match the system meters and the internal dynamic range of the Compellor will be opti- mized.

Normalizing the Compellor is accomplished by a rear panel REF LEVEL switch provided for each channel. Two standard reference levels of -10dBV and +4dBu are available. Simply set the switches as required.

If you have a nonstandard operating level, select the closest setting to your operating level. For DAT machines and other digital media that define operating levels according to a maxi- mum level rather than an average level, we have found the -10dBV position most often pro- vides the correct match.

4.12 Input Connections

The input impedance is 20 kilohms and the Compellor will not significantly load the source when the unit is in-line. Inputs are made by means of 3-pin female XLR jacks. Pin connec- tions follow conventional standards. Pin 1 is connected directly to chassis ground. Signal pins 2 and 3 may be used either as pin-2 positive or pin-3 positive as you wish. Current U. S. and international industry standards call for using pin-2 as the positive polarity lead.

For unbalanced use, tie pin 3 to pin 1 for the ground and use pin 2 as “hot”.

Whether using balanced or unbalanced wiring, be sure to follow the same connection scheme for both channels of the input and output wiring to avoid audio phasing problems.

Interfacing with unbalanced sources can sometimes be improved with a pseudo-balanced connection. For a complete tutorial on balanced and unbalanced interfacing to other equip- ment, please refer to Appendix 1 of this manual.

4.13 Output Connections

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Contents 320A Safety Declarations Fast Finderi320A Contents Page Quick Start Quick StartWhat Is a Compellor? What Does It Do?How Does It Work? Bit Of Compellor HistoryIntroduction Page Unpacking Damage & ClaimsMains Voltage Selection And Fuse Power Cord Safety ConsiderationsMounting In a Rack Proper VentilationInstallation Remote ConnectorReference Level Setting Input ConnectionsSummary Specications Ratio Introduction RecordingMixing MasteringVideo Post-Production Live ConcertsBroadcast Radio Pre-processing Broadcast STL/ Phone Line Driver Television Broadcasting and Cable SystemsVideo and Audio Tape Duplication Voice ProcessingHard Disk Recording Signal Flow Processing FunctionsLeveling Function Compressor Function DRCDVG Silence GateStereo Enhance Stereo LinkingMeter Selections LimiterProcess Switch Output ControlInput/Output Operating LevelsGain Reduction Metering Limited Warranty To Obtain ServiceAppendices Appendix B 320A Appendix C Proper Wiring Techniques Appendix CAppendix D Appendix D Part 1 Balanced OUT to BalancedImpedance Balanced Outputs Part 5 Y Insert Cables Appendix E Appendix E Compellor to the RescueWhere The Problem Comes From Appendix FConfusion PPM StandardAppendix F VU StandardWhere The Compellor Fits Death of a Perfectly Good VU MeterBirth of dBFS DAT TragedyIdeal Audio Package Analog/Digital Level DiscrepancyWhat, Me Worry?

320A specifications

The Aphex Systems 320A is a dynamic processor designed to enhance the quality of audio recordings in professional settings. Known for its exceptional performance and versatility, the 320A offers a unique combination of compression, limiting, and expansion functionalities. This unit is an essential tool for sound engineers and producers looking to achieve polished sound.

One of the standout features of the 320A is its dual channel processing capability. This allows users to apply dynamic processing to two separate audio signals simultaneously, making it ideal for stereo or dual mono setups. The 320A offers a range of controls, including threshold, ratio, attack, release, and gain, allowing precise adjustments to be made according to the needs of any project.

The 320A utilizes Aphex's proprietary Intelligent Clipping technology, which helps to prevent distortion at high signal levels. This feature is particularly beneficial when working with dynamic sources like vocals and percussive instruments. Intelligent Clipping ensures that the audio remains smooth and clear, even when processed aggressively.

In terms of connectivity, the Aphex 320A is equipped with balanced XLR and TRS inputs and outputs, ensuring compatibility with various audio sources and devices. The unit supports both line-level and mic-level signals, providing flexibility for different recording scenarios. Additionally, its low noise operation ensures that the final output retains pristine audio quality.

Another significant characteristic of the 320A is its user-friendly interface. The front panel features easy-to-read meters and clearly defined controls, making it straightforward for users to monitor the audio levels and adjust settings in real-time.

The 320A also includes a sidechain capability, allowing users to trigger compression or expansion from an external source. This feature is useful for achieving effects like ducking or creating rhythmic dynamics in a mix.

In summary, the Aphex Systems 320A is a feature-packed dynamic processor that serves as an invaluable tool for audio professionals. With its dual channel processing, Intelligent Clipping technology, flexible connectivity options, and user-friendly design, the 320A stands out in the realm of audio processing equipment, delivering high-quality performance for a variety of recording and mixing applications.
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