Behringer MULTICOM PRO-XL MDX4600 Manual - Page 5
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5 MULTICOM PRO-XL MDX4600/PRO-XL MDX2600/AUTOCOM PRO-XL MDX1600 User Manual 1. Introduction With this new dynamics processor from the PRO-XL series you have acquired an extremely powerful and universal compressor which unites in one compact device all of those dynamics control functions that are most frequently used in practice: each channel has an independent compressor/limiter, expander/ gate and peak limiter. Thus, virtually all dynamics processing problems can be remedied with little effort. Future-oriented BEHRINGER technology The new PRO-XL dynamics processors from BEHRINGER feature several innovative circuit designs, making them top-class dynamics processing equipment. Compared to their predecessors, they now have improvements such as the de-esser, which allows you to effectively suppress disturbing hiss noise (COMPOSER PRO-XL), additional LED displays to set the de-esser levels, plus a switchable enhancer. The AUTOCOM PRO-XL not only includes an enhancer, but also a switchable de-esser and a peak limiter, which has already proved its versatility in the COMPOSER PRO. The BEHRINGER MULTICOM PRO-XL has been upgraded with an expander/ noise gate plus enhancer. Additionally, we have managed to improve its audio properties even further-in combination with a revised circuit design. To give you the best operational reliability possible, we manufacture our products in accordance with the highest quality standards known in the industry. Additionally the dynamic processors are manufactured under ISO9000 certified management system. VAD (Voice-Adaptive) De-esser The COMPOSER PRO-XL and AUTOCOM PRO‑XL incorporate a newly designed de-esser circuit specifically adapted to process the critical range of treble frequencies. Hiss noise on vocal tracks often contains high levels, giving the signals a rather edgy, unpleasant sound. The de-esser responds to those frequency ranges in which hiss noise usually occurs and limits the overall signal level as soon as the audio signal is affected by excessive energy density in this range. Unlike equalizers, however, it does not impair the frequency response of the signal. In this way, intelligibility in low-level passages is perfectly preserved, and you can even boost the treble range with a good equalizer. The sound becomes transparent and fresh, while the de-esser prevents hiss noise from becoming too dominant and disturbing the overall sound image. ATS (Authentic Tube Simulation) circuitry Even today, the warm, expressive and transparent tonal character of electronic tubes is a real "classic". We proudly present the COMPOSER PRO-XL and its high-tech circuit design enabling the authentic reproduction of this legendary sound, and at the same time avoiding all of the technical drawbacks that go along with tube technology. Owing to state-of-the-art semi-conductor technology, there is no sound deterioration caused by tube ageing, there are no heat problems and no maintenance required at all. All that remains is the advantage of tube technology: its distinctive sound! IKA (Interactive Knee Adaptation) Compressor Our proven IKA (Interactive Knee Adaptation) circuit successfully combines the "hard knee" compressor concept with the "soft knee" characteristic. This program-dependent control characteristic makes it possible to both provide an "inaudible" and musical program compression and allows for creative and efficient dynamics processing. IRC (Interactive Ratio Control) Expander A fundamental problem when using a compressor is the fact that the basic noise floor depends on the amount of compression applied, i.e. it is amplified maximally in low-level passages and breaks in the music (compressor noise). To eliminate this problem, compressors are usually equipped with additional expander or gate circuitry, simply fading out the noise during breaks. The dynamics processors from the PRO-XL Series feature our IRC (Interactive Ratio Control) expander, whose ratio setting changes automatically with the program material. The result is an expander that can be set quickly and easily, and does not cut off low-level wanted signals (e.g. the first or last syllable of a word in a vocal track). With the new IRC circuit, the expander/gate section of the BEHRINGER COMPOSER PRO-XL MDX2600, AUTOCOM PRO-XL MDX1600 and MULTICOM PRO-XL MDX4600 can be used as an independent device to eliminate any kind of interference, thus giving you almost unlimited flexibility of application. IDE (Interactive Dynamic) Enhancer Probably the best known negative side effect of a compressor is the "dull" and "compressed" sound that is likely to result from the processing of complex program material. Low-frequency instruments usually produce the highest signal energy and hence make the compressor reduce the overall level. Any instrument in the higher frequency ranges concurrently played also has its level reduced, which leads to a "compressed" overall sound. The dynamic enhancer provides the solution to this problem, enabling you to make up specifically for the compression-induced loss of treble energy. Since the enhancer can detect the amount of compression applied, it does not change the sound image as long as the signals remain uncompressed. No treble energy is lost, even when complex mix-down material is processed. IGC (Interactive Gain Control) Peak Limiter Another outstanding feature of BEHRINGER dynamics processors is the IGC (Interactive Gain Control) limiter, an intelligent combination of a clipper and program limiter. The clipper comes in as soon as an adjustable threshold is exceeded and abruptly limits the signal gain. However, if the limiter threshold is exceeded for longer than a few milliseconds, the ICG circuit is activated automatically and reduces the gain of the overall output signal, so that audible distor-tion is eliminated (program limiter). When the signal drops below threshold again, its level is restored to its original value after about one second. This IGC feature is an extremely usefull tool for both live applications (e.g. speaker protection) and digital processing, in which excess levels lead to unpleasant distortion.