320A

7. System Description

Compellor

7.19 Gain Reduction Metering

When the Meter Select is toggled into “G.R.” the bi-color LED meter is programmed to indi- cate a bar graph from left to right but differing from the program level indications. In this case, the bar is entirely green except for a possible red dot which floats within the green bar. The entire length of the green bar indicates total gain reduction of the Compellor. The position of the red dot indicates the amount of Leveling gain reduction, if any. The amount of gain reduc- tion contributed by compression is inferred from the remainder of gain reduction indicated above the red dot.

-15

-12

-9

-6

-3

0

3

6

9

12

PGM (dB)

2

4

6

8

10

12

14

16

18

20

G.R. (dB)

6 Reds

 

3 Greens

1 Red

7 Greens

2 Dark

Figure 7-2 Bargraph G. R. Meter Example

If all gain reduction is due to compression, then the indication will be a totally green bar, and the whole bar indicates compression. If all the gain reduction is from leveling, then the green bar will have a red dot at the right most point. Figure 7-2 shows an example of indicating 16dB total gain reduction with 4dB of leveling. 12dB of compression is therefore inferred.

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Aphex Systems 320A owner manual Gain Reduction Metering
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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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