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AUTOCOM PRO MDX1400

TABLE OF CONTENT

1. INTRODUCTION.....................................................................................................................6

1.1 The Design Concept ........................................................................................................................ 6

1.2 Before you begin ............................................................................................................................. 7

 2. CONTROLS ............................................................................................................................8

2.1 Expander/Gate Section ................................................................................................................... 8

2.2 Compressor Section ....................................................................................................................... 9

2.3 Dynamic Enhancer Section ........................................................................................................... 10

2.4 Rear Panel Control Elements Of The AUTOCOM PRO .................................................................. 10

3. APPLICATIONS ..................................................................................................................... 11

3.1 Compression/Levelling/Limiting/Clipping ......................................................................................... 11

3.2 Expander/Gate Section ................................................................................................................. 12

3.2.1 Controlling Leakage In The Studio ....................................................................................... 12

3.2.2 Initial Settings For The Expander/Gate Section ................................................................... 13

3.2.3 Reducing Leakage In Stage Mics ........................................................................................ 13

3.2.4 Reducing Feedback In Stage Mics ...................................................................................... 14

3.2.5 Noise Reduction On Effects Paths ...................................................................................... 14

3.2.6 Creative Use Of The Expander/Gate Section ....................................................................... 14

3.3 Compressor Section ..................................................................................................................... 14

3.3.1 Initial Settings For The Compressor Section ....................................................................... 15

3.3.2 The AUTOCOM PRO As A Sound Effects Unit .................................................................... 16

3.3.3 The “Muffling” Effect Of A Compressor ................................................................................. 16

3.4 Dynamic Enhancer Section ........................................................................................................... 16

3.4.1 Initial Settings For The Dynamic Enhancer Section ............................................................. 17

4. SPECIAL APPLICATIONS .....................................................................................................17

4.1 Using The AUTOCOM PRO For Recording And Cassette Duplication ............................................ 17

4.1.1 The AUTOCOM PRO In Digital Recording And Sampling ..................................................... 18

4.1.2 The AUTOCOM PRO In Mastering ...................................................................................... 18

4.2 The AUTOCOM PRO As A Protective Device ................................................................................. 18

4.2.1 Protection Of A System With A Passive Crossover .............................................................. 18

4.2.2 Protection Of A System With An Active Crossover............................................................... 19

4.2.3 Improving The Sound Of A Processor System ..................................................................... 19

4.3 The AUTOCOM PRO In Broadcast ................................................................................................ 19

5. EXTERNAL SIDECHAIN APPLICATIONS............................................................................20

5.1 The Sidechain Function................................................................................................................. 20

5.2 Using An Equalizer In The Sidechain Path .................................................................................... 20

5.2.1 The AUTOCOM PRO As A “De-Esser” ................................................................................. 20

5.2.2 Frequency Selective Filtering Of Unwanted Signals ............................................................. 21

5.2.3 Suppressing Instruments During Recording ......................................................................... 21

5.2.4 Emphasizing Musical Instruments During Recording ........................................................... 21

5.3 Anticipated Compression .............................................................................................................. 22

5.4 “Voice-Over” Compression (“Ducking”) ........................................................................................... 22

5.5 Triggering Additional Sounds From A Rhythm Track ...................................................................... 22

6. TECHNICAL  BACKGROUND ..............................................................................................22

6.1 Noise As A Physical Phenomenon ................................................................................................ 22

6.2 What Are Audio Dynamics? .......................................................................................................... 22

6.3

Compressors/Limiters ......................................................................................................... 24

6.4

Expanders/Noise Gates ...................................................................................................... 24

7. AUDIO  CONNECTIONS .......................................................................................................25

7.1 Inputs And Outputs ....................................................................................................................... 25

7.1.1 Balanced Inputs And Outputs .............................................................................................. 25

7.1.2 Transformer Balanced Outputs (Optional) ............................................................................ 25

8. TECHNICAL DATA ................................................................................................................ 27
9. WARRANTY...........................................................................................................................29

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Содержание Autocom Pro MDX1400

Страница 1: ...D AUTOCOM PRO MDX1400 www behringer com ENGLISH User s Manual Version 1 4 June 2001 Downloaded from www Manualslib com manuals search engine...

Страница 2: ...rs that produce heat Power Source The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance Grounding or Polarization P...

Страница 3: ...portant member of the BEHRINGER family With your highly competent suggestions for new products you ve greatly contributed to shaping our company and making it successful In return we guarantee you unc...

Страница 4: ...lows for inaudible elimination of disturbing noise signals s Dynamic Enhancer for compression dependent equalization s Extremely low noise operational amplifiers and high grade VCA s s High quality de...

Страница 5: ...uplication 17 4 1 1 The AUTOCOM PRO In Digital RecordingAnd Sampling 18 4 1 2 TheAUTOCOM PRO In Mastering 18 4 2 TheAUTOCOM PROAs AProtective Device 18 4 2 1 Protection Of ASystem With A Passive Cross...

Страница 6: ...ncept of a hard knee compressor with the characteristics of a soft knee approach This program dependent regulation scheme forms the prerequisite both for inaudible and musical program compression and...

Страница 7: ...packaging and its contents for any signs of physical damage which may have occurred during transit If the unit is damaged please do not return it to BEHRINGER but notify your dealer and the shipping...

Страница 8: ...f channel 1 take over the functions of channel 2 Should you wish to use the SC EXT function in stereo mode then be sure that both SC RETURN jacks are connected to the external control signal and that...

Страница 9: ...ttack and release controls will function 10 The OUTPUT control allows for the increase or decrease of the output signal by a maximum of 20 dB Thus a level loss due to the compression or limiting proce...

Страница 10: ...t between Off and 6 Dynamic enhancement allows you to replenish any high frequencies lost through the compression process for absolutely natural sounding dynamics control Enhancement is only added whe...

Страница 11: ...ression Levelling Limiting Clipping Now that the functions of the individual sections have been clearly explained we would like to acquaint you with more terms and relationships of the dynamics proces...

Страница 12: ...nt on the program material The response characteristics of conventional expanders tend to cut into the signal abruptly and the result of this is unacceptable most of the time Gain changes become audib...

Страница 13: ...Now turn the control clockwise until all unwanted noise is removed and only the sound of the desired instrument can be heard To adapt the unit to the program material properly you can additionally cho...

Страница 14: ...fined threshold The reverberation can be controlled by using the THRESHOLD control and the RELEASE switch The decay characteristics of the instrument can be controlled using the release switch so that...

Страница 15: ...h IN SC EXT switch OUT SC MON switch OUT INTERACTIVE switch IN SC FILTER switch OUT THRESHOLD control 20 dB RATIO control 3 1 AUTO switch IN OUTPUT control 0 dB Tab 3 2 Initial settings for the compre...

Страница 16: ...ame effect is experienced when processing reverberated or ambient sounds The solution commonly used to this basic problem is either to reduce the compression ratio or to slow down the attack time so t...

Страница 17: ...one should always take care to utilize the full dynamic range of the tape recorder DAT recorder etc Principally it is possible to control the recording level by riding faders which means with low lev...

Страница 18: ...AT recorder Now increase the recording level of the recorder back to unity The result is a clearly louder recording without any loss of sound 4 2 The AUTOCOM PRO As A Protective Device Sound system di...

Страница 19: ...the loudspeaker In some units the crossover frequencies in the crossover unit are further changed during high signal levels to achieve a loudness contour suited to the human hearing But in many cases...

Страница 20: ...ive amount of high frequency information within the program material as in a normal compressor the VCA is activated and the overall level is reduced As this type of compression affects the whole frequ...

Страница 21: ...ick actions Generally it can be said that relatively high threshold settings prevent the overall sound from being impaired and lead to the compression of solo instruments or very loud sounds 5 2 4 Emp...

Страница 22: ...requencies are equally affected we term this white noise It is fairly obvious that electronics cannot function without components Even if special low noise components are used a certain degree of basi...

Страница 23: ...control is simply not fast enough to be satisfactory t P dB 20 0 20 40 60 80 Clipping Headroom Operating level Effective SNR Noise floor Fig 6 2 The interactive relationship between the operating lev...

Страница 24: ...fect noise will be masked and thus becomes inaudible as soon as considerably louder sound signals in the same frequency band are added Nevertheless the further the level that the desired signal decrea...

Страница 25: ...ty Please ensure that only qualified persons install and operate the AUTOCOM PRO During installation and operation the user must have sufficient electrical contact to earth Electro static charges migh...

Страница 26: ...z 0 0 5 dB Frequency Response 0 35 Hz to 200 kHz 0 3 dB Noise 95 dBu unweighted 22 Hz to 22 kHz THD 0 008 typ 4 dBu 1 kHz Gain 1 0 04 typ 20 dBu 1 kHz Gain 1 IMD 0 01 typ SMPTE Crosstalk 100 dB 22 Hz...

Страница 27: ...ement LED display 1 2 4 6 9 12 15 18 21 24 27 30 dB Input Output Level 12 element LED display 30 24 18 12 6 0 3 6 9 12 18 dB Expander Gate Threshold 2 LEDs for under and above Function switch LED indi...

Страница 28: ...RINGER 2 If the product needs to be modified or adapted in order to comply with applicable technical or safety standards on a na tional or local level in any country which is not the country for which...

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