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Aphex 320D Compellor

Dual Mono/Stereo Automatic Level Controller with Digital and Analog I/O

Product Code: 44928

Retail Price: $1,495.00

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Description
The 320D converts between acting as two independent mono processors and one linked stereo processor by front panel selection. This is true with both analog and digital I/O.

The 320D serves as a fine A to D converter with processing. When you use the analog input, the digital output contains the Compellor's processing and is therefore ready for use in almost any application. Conversely, the 320D serves as a fine D to A converter. When you use the digital input, the analog output contains the Compellor's processing, and is properly levelled and packaged.

The professional analog audio inputs and outputs are fully balanced and adapt to consumer or professional operating levels at the touch of a button. Analog or digital source selection is made at the rear panel.

For digital interfacing, the 320D contains a high quality 24 bit low noise codec to receive digital audio and transmit digital audio. Once the incoming digital audio is converted by the DAC section, it passes through the compellor as normal audio. The audio output is then converted back to digital by the ADC section of the codec.

The rear panel AES3 jacks are standard professional 110 ohm interfaces. There is no word clock input or output. Synchronizing is done from the AES3 input signal or an internal clock. When a digital input is present, the output is synchronized to the input sample rate. If no digital input is present, the digital output automatically locks to the internal default sample clock. The user can specify the sample rate by changing the internal crystal. Spare crystals for 32kHz, 44.1kHz, 48kHz, and 96kHz are supplied with the unit free of charge.

The model 320D codec translates the -20dBfs level of the digital audio source to the 0dB reference within the Compellor circuits. The average output levels will target around -20dBfs. The selectable peak limiter's threshold translates to -6dBfs. Thus, no digital audio output peaks will rise above -6dBfs when the limiter is on. The combination of averaging the level around -20dBfs and holding peaks below -6dBfs packages the audio perfectly for natural sound quality and for most transfer or transmission purposes. For example, the digital audio would be ready for direct input toan MP3 encoder, HD recorder, Broadcast digital STL, .wav file, etc.

The Compellor circuits are totally unique. By throwing away all conventional design ideas, Aphex created audio processing with unprecedented sound transparency, yet is exceedingly effective at controlling levels. Because our designs are patented, no other company has been able to match the performance. Algorithms like our "DVG", "DRC", and "FDL" have yet to find any rivals.

Aphex engineering and manufacturing produces products that last and last without need for repairs or calibration. Some Compellors have literally been in 24 hour use in the same rack for a decade, or longer! When you specify a Compellor, you know it will do its job flawlessly and give you peace of mind.
In Depth
- Frequency Discriminate Leveler - No bass pull-back in music
- Dynamic Release Computer
- Dynamic Verification Gate - adds greater transparency
- Silence Gate - Locks gain when audio stops
- Process balance - Lets you have any combination of leveling and compression
- True Bypass - no electronics in bypass
- AES3 I/O up to 96kHz
- Analog I/O - Fully balanced professional
- High Reliability - Famous Aphex Engineering
- Stereo & Dual Mono - Use as two separate channels or linked for stereo
- Source Select - Choose digital or analog input
- Dual Outputs - Use BOTH digital and analog at the same time with either input selected

ANALOG INPUTS:
- Connector: 3 pin XLR Female
- Type: Transformerless servo balanced RFI filtered
- Impedance: 22k ohms balanced, 11k ohms unbalanced
- Operating Level: user selectable +4dBu or -10dBv
- Max input level: +27dBu (ref = +8); +25dBu (ref = +4); +10dBV (ref = -10)
- CMRR: >90dB at 100Hz >70dB at 1kHz >50dB at 20kHz

DIGITAL INPUTS
- Connector: 3 pin XLR female
- Type: Transformer balanced
- Impedance: 110 ohms

ANALOG OUTPUTS
- Connector: 3 pin XLR Male
- Type: electronic servo balanced (unbalanced without 6dB loss)
- Impedance: 65 ohms bal or unbal (nominal load 600 ohms or greater)
- Max level out (bal); +25dBu (ref = +4); +10.8dBV (ref = -10)
- Max level out (unbal); +20dBu (ref = +4); +10.8dBV (ref = -10)

DIGITAL OUTS
- Connector: 3 pin XLR Male
- Type: Transformer balanced
- Impedance: 110 ohms

AUDIO
- Frequency Response: ±1dB 10Hz to 65kHz

Hum and noise (1k tone at unity gain):
- No gain reduction; -67 dBu (ref = +4); -86dBV (ref = -10)
- 10dB gain reduction; -74 dBu (ref = +4); -89dBV (ref = -10)

Crosstalk at 20kHz: -65 dBu (ref = +4); -78dBV (ref = -10)
- Dynamic THD: typically .05% for 1kHz at 20dB gain reduction
- Static THD: .025% at maximum output level
- IMD, max output: .13% (ref = +4); .4% (ref = -10)

SYSTEM FUNCTIONS
- Compression
- Frequency Discriminate Leveling
- Peak Limiter
- Dynamic Verification Gate (DVG)
- Dynamic Recovery Computer (DRC)
- Silence Gate
- Stereo Enhance

THRESHOLD
- Compressor: 30dB below nominal level
- Leveler: 30dB below nominal level
- Limiter: 14dB above nominal level

RATIO
- Compressor: 1.1:1 to 3:1 program dependent
- Leveler: 20:1
- Limiter: >30:1

ATTACK TIMES
- Compressor: 5 to 50msec program dependent
- Leveler fast: 20Hz = 1.5 Sec >1kHz Frequency Discriminate Leveler
- Leveler slow: 20Hz = 5 Sec >1kHz Frequency Discriminate Leveler
- Limiter: 1 uSec

RELEASE TIMES
- Compressor: 200mSec to 1 Second program dependent
- Leveler fast: 3 sec
- Leveler slow: 10 sec
- Limiter: 200 msec

DIGITAL AUDIO

- Input SR: Locks to 32, 44.1,48, 88.2, 96kHz ±3%
- I/O Type: AES/EBU 110 ohms XLR
- Default Output SR: User definable by replacing crystal; 48kHz standard
- Word Clock: Not Supported

OTHER SPECIFICATIONS
- Power Requirements: 100 - 120 - 220 - 240 VAC, 50-60Hz 20 Watts
- Dimensions: 1.75"H x 19"W x 10.125" D (44.5mm x 482.6mm x 257mm) (allow for wire dress)
- Net Weight: 8 lbs (3.6 kg)
Item Number: Aphex 320D Compellor [320D COMPELLOR]    44928 0-0
Have a question about the Aphex 320D Compellor [320D COMPELLOR]?
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Aphex 320D Compellor [320D COMPELLOR]


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