Manuale d’uso / di manutenzione del prodotto MDX1400 del fabbricante Behringer
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D AUTOCOM ® PRO MDX1400 www.behringer.com ENGLISH Users Manual V e r s i o n 1 . 4 June 2001.
2 AUTOCOM PRO MDX1400 This symbol, wherever it appears, alerts you to important operating and mainte- nance instructions in the accompanying literature. Read the manual. SAFETY INSTRUCTIONS CAUTION: T o reduce the risk of electric shock, do not remove the cover (or back).
3 AUTOCOM PRO MDX1400 FOREWORD Dear Customer, Welcome to the team of AUTOCOM PRO users and thank you very much for expressing your confidence in Behringer products by purchasing this unit.
4 AUTOCOM PRO MDX1400 MDX1400 AUTOCOM ® PRO I nteractive 2-channel expander/gate/compressor/enhancer of the reference class s IKA (Interactive Knee Adaptation) compressor concept combines the advanta.
5 AUTOCOM PRO MDX1400 T ABLE OF CONTENT 1 . INTRODUCTION ..................................................................................................................... 6 1. 1 The Design Concept ..................................................
6 AUTOCOM PRO MDX1400 1. INTRODUCTION In purchasing the new AUTOCOM PRO Model MDX1400, you have acquired an extremely efficient and universal dynamics processor, which combines the most commonly used dynamic functions within a compact stereo unit: every channel has its own independent Compressor/Limiter, an Expander/Gate and a Dynamic Enhancer.
7 AUTOCOM PRO MDX1400 Gate section can be used as an independent unit to eradicate noise offering almost limitless possibilities within this application.
8 AUTOCOM PRO MDX1400 2 . CONTROLS 1 Fig. 2.1: AUTOCOM PRO front panel The BEHRINGER AUTOCOM PRO has two identical channels. Each channel is equipped with 8 backlit push-buttons, 7 rotary controls and 26 LEDs.
9 AUTOCOM PRO MDX1400 2.2 Compressor Section 11 14 16 17 13 10 8 9 7 6 15 5 12 Fig. 2.3: Control elements of the compressor section 5 The THRESHOLD control sets the threshold point for the compressor section.
10 AUTOCOM PRO MDX1400 15 The SC FILTER switch activates a highpass filter in the sidechain path and thus limits the influence of low frequencies on the AUTOCOM PROs control processes. 16 The 12-digit GAIN REDUCTION meter indicates how effectively the gain is reduced by the compressor, within a range from 1 to 30 dB.
11 AUTOCOM PRO MDX1400 22 AUDIO IN . These are the audio inputs of your AUTOCOM PRO, available both as balanced 1/4" TRS and XLR connectors. 23 AUDIO OUT . These are the audio outputs of your AUTOCOM PRO. Matching phone jack and XLR connectors are wired in parallel.
12 AUTOCOM PRO MDX1400 Clipping In contrast to the two previously mentioned limiters, the clipping mode features infinitely fast control times, an infinite compression ratio and creates an unsurpassable barrier (brickwall) for all signals above a certain level.
13 AUTOCOM PRO MDX1400 adjacent mics and results in conflicting frequency and phase coherence problems, as well as unspecified sounds (comb filter effects). It is vitally important that every instrument is recorded into a separate mic and that each mic is individually gated.
14 AUTOCOM PRO MDX1400 3.2.4 Reducing Feedback In Stage Mics When a singer is using a vocal mic, their voice effectively stops other sounds from entering the mic. But in pauses between the singing, the mic will pick up noise from the house PA and monitors, which can lead to unpleasant feedback problems.
15 AUTOCOM PRO MDX1400 Threshold Gain 0 dB Input Output o o:1 Limiter Ratio 2:1 Ratio 4:1 Hard Knee IKA Curve Fig. 3.2: IKA characteristic of the compressor section The new IKA (Interactive Knee Adaptation) circuit prevents aggressive compression, created by high ratios, from sounding too unnatural.
16 AUTOCOM PRO MDX1400 The experienced user will be in a position to specify parameters while in bypass mode and thus realize the effect before the unit is actually switched into operation. This is important in live situations, where a signal needs to be managed efficiently by the engineer, without the convenience of continual A/B comparison.
17 AUTOCOM PRO MDX1400 0 dB -20 dB No Gain Reduction 20 dB Gain Reduction Without Enhancer With Enhancer Frequency Output Fig. 3.3: The frequency response with and without dynamic enhancer 3.
18 AUTOCOM PRO MDX1400 4.1.1 The AUTOCOM PRO In Digital Recording And Sampling In an analog recording, too low recording levels lead to an increased noise level, whereas too high levels will cause a compressed and squashed sound. In extreme cases, it will cause distortion due to tape saturation.
19 AUTOCOM PRO MDX1400 the midrange/tweeter range caused by high-energy bass signals! This statement, as paradox as it may seem at first, can be explained with the fact that especially low-frequency signals with high amplitudes can overload the power supplies in the amplifier(s).
20 AUTOCOM PRO MDX1400 5 . EXTERNAL SIDECHAIN APPLICATIONS 5.1 The Sidechain Function With the AUTOCOM PROs sidechain function you have a very useful external control option. By activating the SC EXT switch, the AUTOCOM PROs control path is disconnected from the audio input and therefore interrupted.
21 AUTOCOM PRO MDX1400 Control Setting SC EXT swit ch IN SC MON swi tch OUT INT ERACTIVE switch OFF SC FIL TER swi t ch OUT THRESHO LD co ntrol +20 dB RATIO control 1:4 AUTO sw itch OUT ATTA C K co ntro l 0,5 ms RELE ASE con trol 200 ms OUT PUT control 0 dB T ab.
22 AUTOCOM PRO MDX1400 5.4 Voice-Over Compression (Ducking) The B EHRINGER AUTOCOM PRO can be used to automatically reduce music to a background level, when an announcer is speaking through a microphone.
23 AUTOCOM PRO MDX1400 Ear Microphone Amplifier Power Amplifier T ape Recorder Radio Cassette Recorder P/dB 140 120 100 80 60 40 Fig. 6.1: The dynamic range capabilities of various devices It is therefore useful to keep the operating level as high as possible without risking signal distortion in order to achieve optimum transmission quality.
24 AUTOCOM PRO MDX1400 of distortion or, for example, to avoid loudspeakers being damaged by overload, Compressors or Limiters are used. The principal function used in these devices is dependent on an.
25 AUTOCOM PRO MDX1400 7.1.2 Transformer Balanced Outputs (Optional) In contrast to electronic balancing, the use of transformer-balanced outputs offers the advantage of galvanic separation between units. Electrical potential differences and ground loops in audio installations do not therefore impair the performance of the units.
26 AUTOCOM PRO MDX1400 8 . TECHNICAL DATA AUDIO INPUT Connectors XL R and 1/4" jack T yp e RF filtered, servo-balanced input Impedance 50 kOh m b a l anced, 25 kOhm unbalanced Nominal Operating Level +4 dB u/-10 dBV switchable Max. Input Level +21 dBu balanced and unbalanced CMRR t y p .
27 AUTOCOM PRO MDX1400 DYNAMIC ENHANCER SECTION T y pe Dynamically controlled frequency correction Process v ar ia bl e (O ff t o 6) FUNCTION SWITCHES SC EXTERN S w i t ches the detector section to the external SC input. SC MON Monitoring the external SC input, disengaging the normal audio.
28 AUTOCOM PRO MDX1400 9. WARRANTY The information contained in this manual is subject to change without notice. No part of this manual may be reproduced or transmitted in any form or by any means, el.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Behringer MDX1400 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Behringer MDX1400 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Behringer MDX1400 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Behringer MDX1400 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Behringer MDX1400, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Behringer MDX1400.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Behringer MDX1400. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Behringer MDX1400 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
