Aphex Systems 2020Mk II manual Aphex 320A

APHEX 320A	Compellor®
APHEX 250	Aural Exciter® III
APHEX 720/722	Dominator™ II

•The Compellor provides a clean consistent sound when used as a pre-processor

•Remote controllable relay hardwire bypass

•Fader settings are less critical and the sound of the station will not change from announcer to announcer

•For television, level changes between programs and commercials will be smoothed out without affecting audio quality

•Servo balanced XLR in/outs for maximum audio quality

•The Aural Exciter increases presence, clarity, speech intelligibility and detail without distortion or overmodulation

•By pre-processing the audio, compensation can be made for the degradation the signal will receive further down the chain

•Single-ended process that can be applied at any point in the audio chain before the peak limiter, and needs no decoding

•Total flexibility in “tuning” the Aural Exciter to your needs

•The Dominator provides an absolute peak ceiling adjustable in

.2dB steps over a 34dB range. Equipment following the Dominator (STL,telco lines, stereo generators, uplink transmitters, etc.) may be driven to maximum input level without overload

•Model 722 is for applications requiring pre-emphasized limiting, such as STL’s, cable systems, satellite uplinks

•Greater consistency of peak audio levels, maximized S/N ratios, and highest possible resolution (more bits) in the digital domain

•Cable television operators can offer consistency in level when a customer switches between channels

•Two channel Frequency Discriminate Leveler varies its attack time

•Dynamic Verification Gate prevents pumping and breathing during short program pauses

•Dynamic Recovery Computer accelerates compressor recovery under complex program to preserve natural sound on transients

•Also available in mono with built in Aural Exciter™ - Model 323A

•Patented Harmonic Generation Process can actually increase bandwidth without increasing level

•Built-in single ended noise reduction can improve noisy sources

•Spectral Phase Refractor circuitry improves bass without eq.

•No unnatural distortion by-products

•Servo balanced XLR inputs and outputs for maximum audio quality

•Remote controllable relay hardwire bypass

•Patented Automatic Limit Threshold varies ratio of bandlimiting to clipping

•Remote controllable relay hardwire bypass

•Switchable low to mid and mid to high crossover frequencies

•Servo balanced XLR ins and outs for maximum audio quality

•Model 722 - switchable pre- and de-emphasis, 50/75µsec/flat

• Model 720 - flat only • 104dB Dynamic Range

•The Model 720 is without emphasis circuitry at a lower cost

APHEX 120A 1 x 4 Distribution Amp

Loading an output with multiple devices may cause noise, distortion and reliability problems. Y-cords and splitters are not the solution, a high quality distribution amp is. The Model 120A has one-input with four inde- pendent outputs. The inputs and outputs are trans- formerless and servo-balanced, allowing interface with balanced or unbalanced equipment (or even a dead short) without affecting the other outputs.

APHEX 124A -10dBV/+4dBu Interface Box

Interfacing a -10dBV unbalanced device with a +4dBu balanced device must be done properly to avoid level mis- matches, noise, and distortion problems. The Model 124A has four discrete channels, two channels are -10dBV inputs to +4dBu outputs and two channels are +4dBu inputs to -10dBV outputs. The -10dBV outputs are active for low impedance and the +4dBu inputs are transformerless servo-balanced, allowing the interface to be transparent and problem free.

11068 Randall Street

Sun Valley, CA 91352, USA

Tel: 818-767-2929 • Fax: 818-767-2641 www.aphex.com

Aphex is proudly American.... 100% owned,

engineered and manufactured in the U.S.A.

Improving the way the world sounds SM

Aphex, Aural Exciter, Big Bottom, Compellor, Digicoder, Dominator, Easyrider and Expressor are trademarks of Aphex Systems, Ltd. All Aphex Products are ETL listed or pending.

The Model 2020MkII contains the following proprietary circuitry: Four Band Wave Dependent Compressor, Post Crossover Multiband Technique, Split Band Clipper, Parallel Path Digital Modulation Stereo Generator, Phase Coherent Crossover, Drift Stabilized A/D Converter, Frequency Discriminate Leveler, Sticky Leveler, Dynamic Verification Gate, Distributed Pre-Emphasis Filter, Split Band Optical High Frequency Limiter, Low Distortion Overshoot Compensated Low Pass Filter.

The Model 2020/2020MkII, 320A/323A, 250, 720/722 are covered by one or more of the following patents: 4150253, 4578648, 4633501, 4843626, 4939471, 5115471, 5155769, 5334947, 5359665, 5422602, 5424488, 5450034, 5463695, 5483600, 5485077, 5612612, 5737432, 5848167, 5896458, 5898395 and 5930374. Other U.S. patents issued and/or pending.

For detailed specifications on these or any other Aphex products call, fax, e-mail or write us.

Aphex reserves the right to make changes to its products without prior notice. Rev:04-15-01 5k