BehringerメーカーMDX2200の使用説明書/サービス説明書
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COMPOSER ® PRO MDX2200 www.behringer.com ENGLISH User’s Manual Version 1.3 June 2001.
2 COMPOSER PRO MDX2200 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 COMPOSER PRO MDX2200 FOREWORD Dear Customer, Welcome to the team of COMPOSER PRO users and thank you very much for expressing your confidence in BEHRINGER products by purchasing this unit.
4 COMPOSER PRO MDX2200 MDX2200 MDX2200 MDX2200 MDX2200 MDX2200 COMPOSER ® PRO Interactive 2-channel expander/gate/compressor/limiter of the reference class V IKA (Interactive Knee Adaptation) compres.
5 COMPOSER PRO MDX2200 T ABLE OF CONTENTS 1 . INTRODUCTION ..................................................................................................................... 7 1. 1 Before you begin ..................................................
6 COMPOSER PRO MDX2200 6. EXTERNAL SIDE CHAIN APPLICA TIONS ........................................................................... 24 6. 1 The side chain function ...................................................................................
7 COMPOSER PRO MDX2200 1. INTRODUCTION In purchasing the new COMPOSER PRO MDX 2200, 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 peak limiter.
8 COMPOSER PRO MDX2200 1.1 Before you begin The BEHRINGER COMPOSER PRO MDX2200 was carefully packed in the factory, in order to ensure safe transport. Nevertheless, should the box show signs of damage please check the equipment itself immediately for any signs of external damage.
9 COMPOSER PRO MDX2200 1.2.4 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 there- fore impair the performance of the units.
10 COMPOSER PRO MDX2200 3 The RATIO control is used to adjust the expansion ratio when the signal drops below the threshold value. This control determines whether the unit works as an expander (low ratio level) or as a gate (1:8). The expansion ratio can be set from 1:1 to 1:8.
11 COMPOSER PRO MDX2200 13 Using the SC MON switch will enable you to connect the side chain control signal to the audio output, whilst at the same time muting the audio input. This function provides you with the ability to monitor the side chain signal that is returned via inserted equalizers or other external processors.
12 COMPOSER PRO MDX2200 2.4 Rear panel control elements of the COMPOSER PRO Fig. 2.5: Control elements of the rear panel 21 SERIAL NUMBER . Please take the time to complete and return the warranty card within 14 days of the date of purchase, otherwise you will lose the right to the extended warranty.
13 COMPOSER PRO MDX2200 also cause uncontrolled currents and voltages. The resulting sound of the various frequencies is heard as noise. Even the best possible tape biasing can “only” provide signal-to-noise ratios of about 70 dB, which is not acceptable today since the demands of listeners have increased.
14 COMPOSER PRO MDX2200 t P/dB +20 0 -20 -40 -60 -80 Clipping Headroom Operating level Effective SNR Noise floor Fig. 3.2: The interactive relationship between the operating level and the headroom The.
15 COMPOSER PRO MDX2200 inaudible as soon as considerably louder sound signals in the same frequency band are added. Nevertheless, the further the level that the desired signal decreases, the more the noise floor becomes a disturbing factor.
16 COMPOSER PRO MDX2200 average level without affecting signal peaks above the threshold, this is referred to as the program limiter. For this purpose the attack time will be set above 20 ms. If the attack time is further reduced in order to also control signal peaks, this is defined as the peak limiter.
17 COMPOSER PRO MDX2200 4.2.1 Controlling leakage in the studio Expander/gates are most commonly used to suppress undesirable leakage of sound from one track to another during recording or playback. They are usually used when recording drum kits, where the mics are very close to each other.
18 COMPOSER PRO MDX2200 4.2.3 Reducing leakage in stage mics The COMPOSER PRO has many uses in live-work, on stage and in multi-miking situations: a well set up expander/gate can effectively suppress background noise, compressor type pumping noise and microphone leakage etc.
19 COMPOSER PRO MDX2200 Threshold Gain 0 dB Input Output o o:1 Limiter Ratio 2:1 Ratio 4:1 Hard Knee green yellow red IKA Curve LED Fig. 4.2: IKA characteristic of the compressor section The new IKA (Interactive Knee Adaptation) circuit prevents aggressive compression, created by high ratios, from sounding too unnatural.
20 COMPOSER PRO MDX2200 technique is required, the attack and release times can also be manually adjusted. 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.
21 COMPOSER PRO MDX2200 Output Input Peak Limiting Program Limiting Release Threshold t/ms Level 20 ms 10 20 30 5 ms approx. 1 s Fig. 4.3: IGC characteristic of the limiter section The diagram illustrates the functioning of the IGC limiter. The solid graph represents the output signal, while the dashed graph above shows the input signal response.
22 COMPOSER PRO MDX2200 5.1.1 The COMPOSER PRO in digital recording and sampling In an analogue 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.
23 COMPOSER PRO MDX2200 5.2.1 Protection of a system with a passive crossover If your sound system incorporates a passive crossover network (included in the loudspeaker case), insert the BEHRINGER COMPOSER PRO between your mixing console output and the power amplifier input.
24 COMPOSER PRO MDX2200 6 . EXTERNAL SIDE CHAIN APPLICATIONS 6.1 The side chain function The BEHRINGER COMPOSER PRO offers an exceptionally usable external facility by using the side chain function. By activating the SC EXT switch, the COMPOSER PRO’s control path is disconnected from the audio input and therefore interrupted.
25 COMPOSER PRO MDX2200 l o r t n o C g n i t t e S h c t i w s T X E C SN I h c t i w s N O M C ST U O h c t i w s E V I T C A R E T N IF F O h c t i w s R E T L I F C ST U O l o r t n o c D L O H S .
26 COMPOSER PRO MDX2200 6.4 “Voice-over” compression (“ducking”) The COMPOSER PRO can be used to automatically reduce music to a background level, when an announcer is speaking through a microphone.
27 COMPOSER PRO MDX2200 Unbalanced use of mono 1/4" jack plugs Ring Balanced use of stereo 1/4" jack plugs Balanced use with XLR connectors 1 2 3 2 1 3 Input Output Tip = Signal Tip = hot (+.
28 COMPOSER PRO MDX2200 8. SPECIFICATIONS 8. SPECIFICATIONS AUDIO INPUT Connectors XLR and 1/4" jack T y pe RF filtered, servo-balanced input Impedance 50 kOhm balanced, 25 kOhm unbalanced Nominal operating level +4 dBu/-10 dBV switchable Max. input level +21 dBu balanced and unbalanced CMRR typ.
29 COMPOSER PRO MDX2200 8. SPECIFICATIONS PEAK LIMITER SECTION T y p e IGC (Interactive Gain Control) peak limiter Threshold variable (+4 dB to OFF (+22 dBu)) Ratio o o:1 S tage 1 Limiter T ype Clipper Attack “zero” Release “zero” S tage 2 Limiter T ype Program limiter Attack program dependent, typ.
30 COMPOSER PRO MDX2200 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, e.
デバイスBehringer MDX2200の購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Behringer MDX2200をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはBehringer MDX2200の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Behringer MDX2200の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Behringer MDX2200で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Behringer MDX2200を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はBehringer MDX2200の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Behringer MDX2200に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちBehringer MDX2200デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
