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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: To reduce the risk of electric shock, do not remove

the cover (or back). No user serviceable parts inside;

refer servicing to qualified personnel.

WARNING: To reduce the risk of fire or electric shock, do not

expose this appliance to rain or moisture.

DETAILED SAFETY INSTRUCTIONS:

All the safety and operation instructions should be read before the appliance is operated.

Retain Instructions:

The safety and operating instructions should be retained for future reference.

Heed Warnings:

All warnings on the appliance and in the operating instructions should be adhered to.

Follow instructions:

All operation and user instructions should be followed.

Water and Moisture:

The appliance should not be used near water (e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a wet

basement, or near a swimming pool etc.).

Ventilation:

The appliance should be situated so that its location or position does not interfere with its proper ventilation.

For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the

ventilation openings, or placed in a built-in installation, such as a bookcase or cabinet that may impede the

flow of air through the ventilation openings.

Heat:

The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other

appliances (including amplifiers) 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:

Precautions should be taken so that the grounding or polarization means of an appliance is not defeated.

Power-Cord Protection:

Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed

upon or against them, paying particular attention to cords and plugs, convenience receptacles and the point

where they exit from the appliance.

Cleaning:

The appliance should be cleaned only as recommended by the manufacturer.

Non-use Periods:

The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.

Debris and Liquid Entry:

Care should be taken that debris and/or liquids do not enter the enclosure through openings.

Damage Requiring Service:

The appliance should be serviced by qualified service personnel when:

- The power supply cord or the plug has been damaged; or

- Debris or liquid has entered the appliance; or

- The appliance has been exposed to rain; or

- The appliance does not appear to operate normally or exhibits a marked change in performance; or

- The appliance has been dropped, or the enclosure damaged.

Servicing:

The user should not attempt to service the appliance beyond that which is described in the operating instruc-

tions. All other servicing should be referred to qualified service personnel.

This  symbol,  wherever  it  appears,

alerts  you  to  the  presence  of

uninsulated dangerous voltage inside

the enclosure—voltage that may be

sufficient to constitute a risk of shock.

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Summary of Contents for Autocom Pro MDX1400

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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