Aphex Systems 320A owner manual What, Me Worry?, Summary

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320A

Compellor

outputs into the codec, the level will then shift and be louder with the analog input. That may give the effect of a fuller on-air sound when the coder is driven by analog because the on-air audio processor at the decoder side is driven with higher input level.

What, Me Worry?

This level mismatch need not be a problem, especially if you intend to use only the digital out- put. Simply readjust the final audio processor to be optimal with the –20dBFS average digital audio input level. If you want to also use the Compellor’s analog output for comparison or for a backup plan, then you can readjust the coder’s analog input gain, if available, or add an external attenuator to the coder’s analog input to get the –20dBFS digital reference conver- sion. Reducing the Compellor’s analog output gain will not solve the problem because it will also drop the digital level proportionately.

Summary

Increasingly, audio monitoring is a mixed bag. Some equipment with VU, some with PPM and some with dBFS. Only if you understand what the meters show, will you be able to use them properly. Being aware that VU meters indicate relative volume level without regard to peaks and that PPM or dBFS peak meters indicate the available headroom below clipping without regard to perceived loudness is most important. Secondly, it is important to know how to set up an operating level. With these two bits of knowledge, you will be able to find a satisfactory solution to all of your audio interfacing problems. Confusion: Gone!

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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 Damage & Claims UnpackingMains Voltage Selection And Fuse Power Cord Safety ConsiderationsMounting In a Rack Proper VentilationInstallation Remote ConnectorReference Level Setting Input ConnectionsSummary Specications Ratio Introduction RecordingMixing MasteringLive Concerts Video Post-ProductionBroadcast Radio Pre-processing Broadcast STL/ Phone Line Driver Television Broadcasting and Cable SystemsVideo and Audio Tape Duplication Voice ProcessingHard Disk Recording Processing Functions Signal FlowLeveling 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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