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MULTICOM PRO MDX4400

8. 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, electronic or mechanical, including photocopying and recording of any kind, for any

purpose, without the express written permission of BEHRINGER Spezielle Studiotechnik GmbH.

BEHRINGER and MULITCOM are registered trademarks.

ALL RIGHTS RESERVED. © 2001 BEHRINGER Spezielle Studiotechnik GmbH.

BEHRINGER Spezielle Studiotechnik GmbH, Hanns-Martin-Schleyer-Str. 36-38, 47877 Willich-Münchheide II, Germany

Tel. +49 (0) 21 54 / 92 06-0, Fax +49 (0) 21 54 / 92 06-30

8. WARRANTY

§ 1 WARRANTY CARD/ONLINE REGISTRATION

To be protected by the extended warranty, the buyer must com-

plete  and  return  the  enclosed  warranty  card  within  14  days  of

the  date  of  purchase  to  BEHRINGER  Spezielle  Studiotechnik

GmbH, in accordance with the conditions stipulated in § 3. Fail-

ure to return the card in due time (date as per postmark) will void

any  extended  warranty  claims.
Based on the conditions herein, the buyer may also choose to

use  the  online  registration  option  via  the  Internet

(www.behringer.com  or  www.behringer.de).

§ 2 WARRANTY

1. BEHRINGER (BEHRINGER Spezielle Studiotechnik GmbH in-

cluding all BEHRINGER subsidiaries listed on the enclosed page,

except BEHRINGER Japan) warrants the mechanical and elec-

tronic components of this product to be free of defects in mate-

rial  and  workmanship  for  a  period  of  one  (1)  year  from  the

original date of purchase, in accordance with the warranty regu-

lations described below. If the product shows any defects within

the  specified  warranty  period  that  are  not  due  to  normal  wear

and tear and/or improper handling by the user, BEHRINGER shall,

at its sole discretion, either repair or replace the product.
2. If the warranty claim proves to be justified, the product will be

returned to the user freight prepaid.
3.  Warranty  claims  other  than  those  indicated  above  are  ex-

pressly  excluded.

§ 3 RETURN AUTHORIZATION NUMBER

1. To obtain warranty service, the buyer (or his authorized dealer)

must call BEHRINGER (see enclosed list) during normal business

hours 

BEFORE

 returning the product. All inquiries must be ac-

companied by a description of the problem. BEHRINGER will then

issue a return authorization number.
2.  Subsequently,  the  product  must  be  returned  in  its  original

shipping carton, together with the return authorization number to

the address indicated by BEHRINGER.
3. Shipments without freight prepaid will not be accepted.

§ 4 WARRANTY REGULATIONS

1.  Warranty  services  will  be  furnished  only  if  the  product  is

accompanied  by  a  copy  of  the  original  retail  dealer’s  invoice.

Any  product  deemed  eligible  for  repair  or  replacement  by

BEHRINGER under the terms of this warranty will be repaired or

replaced within 30 days of receipt of the product at BEHRINGER.
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 the product was originally developed and manufactured,

this modification/adaptation shall not be considered a defect in

materials  or  workmanship.  The  warranty  does  not  cover  any

such  modification/adaptation,  irrespective  of  whether  it  was

carried  out  properly  or  not.  Under  the  terms  of  this  warranty,

BEHRINGER shall not be held responsible for any cost resulting

from such a modification/adaptation.

3. Free inspections and maintenance/repair work are expressly

excluded from this warranty, in particular, if caused by improper

handling of the product by the user.
This also applies to defects caused by normal wear and tear, in

particular,  of  faders,  potentiometers,  keys/buttons  and  similar

parts.
4. Damages/defects caused by the following conditions are not

covered  by  this  warranty:

s

misuse, neglect or failure to operate the unit in compliance

with the instructions given in BEHRINGER user or service

manuals.

s

connection or operation of the unit in any way that does not

comply with the technical or safety regulations applicable in

the  country  where  the  product  is  used.

s

damages/defects  caused  by  force  majeure  or  any  other

condition that is beyond the control of BEHRINGER.

5. Any repair or opening of the unit carried out by unauthorized

personnel  (user  included)  will  void  the  warranty.
6. If an inspection of the product by BEHRINGER shows that the

defect in question is not covered by the warranty, the inspection

costs are payable by the customer.
7. Products which do not meet the terms of this warranty will be

repaired  exclusively  at  the  buyer’s  expense.  BEHRINGER  will

inform the buyer of any such circumstance. If the buyer fails to

submit  a  written  repair  order  within  6  weeks  after  notification,

BEHRINGER will return the unit C.O.D. with a separate invoice

for freight and packing. Such costs will also be invoiced sepa-

rately when the buyer has sent in a written repair order.

§ 5 WARRANTY TRANSFERABILITY

This warranty is extended exclusively to the original buyer (cus-

tomer  of  retail  dealer)  and  is  not  transferable  to  anyone  who

may subsequently purchase this product. No other person (re-

tail dealer, etc.) shall be entitled to give any warranty promise on

behalf of BEHRINGER.

§ 6 CLAIM FOR DAMAGES

Failure of BEHRINGER to provide proper warranty service shall

not  entitle  the  buyer  to  claim  (consequential)  damages.  In  no

event shall the liability of BEHRINGER exceed the invoiced value

of  the  product.

§ 7 OTHER WARRANTY RIGHTS AND NATIONAL LAW

1. This warranty does not exclude or limit the buyer’s statutory

rights  provided  by  national  law,  in  particular,  any  such  rights

against  the  seller  that  arise  from  a  legally  effective  purchase

contract.
2.  The  warranty  regulations  mentioned  herein  are  applicable

unless they constitute an infringement of national warranty law.

Summary of Contents for Multicom Pro MDX4400

Page 1: ...MULTICOM PRO MDX4400 www behringer com E User s Manual Version 1 3 April 2001 ENGLISH ...

Page 2: ... 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 t...

Page 3: ...u because you are the most important 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 uncompromising quality manufactured under the ISO9000 certified management system as well as excellent technical and audio properties at an extremely favorable price All of t...

Page 4: ...n IKA and hard knee characteristics s IGC Interactive Gain Control peak limiter combines clipper with program limiter circuits s Extremely low noise operational amplifiers and high grade VCA s s High quality detent potentiometers and backlit switches s Stereo Couple function for channels 1 2 and 3 4 selectable with real totaling of RMS output s Accurate 8 digit LED meters for input level output le...

Page 5: ...mpression Leveling Limiting Clipping 16 5 2 Compressor Section 17 5 2 1 Initial Settings For The Compressor Section 18 5 2 2 The MULTICOM PRO AsA Sound Effects Unit 18 5 2 3 The Muffling Effect OfACompressor 18 5 3 Peak Limiter Section 19 5 3 1 Initial Settings For The Peak Limiter Section 19 6 SPECIAL APPLICATIONS 20 6 1 Using The MULTICOM PRO For RecordingAnd Cassette Duplication 20 6 1 1 The MU...

Page 6: ...ining the audio properties as well as the circuit topology For the first time the MULTICOM PRO MDX 4400 uses SMD technology Surface Mounted Device These sub miniature components known from aerospace technology allow for an extreme packing density plus improve the unit s reliability IKA Interactive Knee Adaptation Compressor Our proven IKA Interactive Knee Adaptation circuit successfully combines t...

Page 7: ...ise cannot be avoided This effect is similar when replaying a tape The non directional magnetic particles passing the replay head can 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 hav...

Page 8: ...passages the gain is reduced Of course it is fairly obvious that this kind of manual control is rather restrictive it is difficult to detect signal peaks and it is almost impossible to level them out Manual 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 1 2 The interactive relationship between the operati...

Page 9: ...sors and limiters perform similar tasks one essential point makes them different limiters abruptly limit the signal above a certain level while compressors control the signal gently over a wider range A limiter continuously monitors the signal and intervenes as soon as the level exceeds a user adjustable threshold Any signal exceeding this threshold will be immediately returned to the adjusted lev...

Page 10: ...rst time the MULTICOM PRO MDX 4400 uses SMD technology Surface Mounted Device These sub miniature components known from aerospace technology allow for an extreme packing density plus the unit s reliability could be improved Additionally the unit is manufactured under ISO9000 certified management system 2 2 Inputs And Outputs 2 2 1 Balanced Inputs And Outputs As standard the BEHRINGER MULTICOM PRO ...

Page 11: ...vices such as power amplifiers etc to avoid overheating 3 2 Mains Voltage Before you connect your MULTICOM PRO to the mains please make sure that your local voltage matches the voltage required by the unit The fuse holder on the female mains connector has 3 triangular markers with two of these triangles opposing each other Your MULTICOM PRO is set to the operating voltage printed next to these mar...

Page 12: ...1 and pin 3 have to be bridged Fig 3 2 Different plug types Never use unbalanced XLR connections with microphone cables as this would short circuit any phantom power transmitted over these cables 3 4 Selecting The Operating Level With the Operating Level switch on the rear of the BEHRINGER MULTICOM PRO you can adjust the internal operating level of the unit Thus the MULTICOM PRO can be adapted per...

Page 13: ...can be adjusted from 1 1 to oo 1 3 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 process can be compensated for Please note when using the THRESHOLD control of the Peak Limiter section that the OUTPUT control of the Compressor section precedes the Peak Limiter section If the OUTPUT control is s...

Page 14: ...for about 1 second to avoid heavy and thus audible signal distortion When you use the peak limiter as a protective device against signal peaks the THRESHOLD control should be set in combination with the OUTPUT control in the compressor section so that the peak limiter responds rarely or not at all Thus only real signal peaks will activate the limiter circuit However to produce creative sound effec...

Page 15: ...e mains Please also note the instructions given in the INSTALLATION chapter 14 AUDIO IN These are the audio inputs of your MULTICOM PRO available both as balanced 1 4 jack and XLR connectors 15 AUDIO OUT These are the audio outputs of your MULTICOM PRO Matching phone jack and XLR connectors are wired in parallel 16 With the OPERATING LEVEL switch you can adapt the MULTICOM PRO to various operating...

Page 16: ...nges without affecting the short term dynamics Normally the threshold is set quite low in order to be able to increase low level signals Leveling requires slow attack and release times combined with a high ratio Because of the very slow response time leveling has no effect on signal peaks or short term changes in average level Limiting The limiting function requires a fast attack time and a high r...

Page 17: ...chieved by low threshold settings sounds less natural with higher ratio settings Ratio settings in the range of 4 1 and lower effect the dynamics of the program material less and are often used to compress the sound of a bass guitar a snare drum or a vocal Sensitive and moderate settings are generally used in mixing and for leveling of program material in broadcast Threshold Gain 0 dB Input Output...

Page 18: ...ance The BEHRINGER MULTICOM PRO with its extensive range of functions is well suited to this application Sound effects of this kind can be achieved using extreme settings To achieve this set the THRESHOLD control to a fairly low level the RATIO control to almost maximum to obtain the desired effect Experiment with all the controls in order to get a feel of their function 5 2 3 The Muffling Effect ...

Page 19: ...e solid graph represents the output signal while the dashed graph above shows the input signal response The areas between the graphs represent the amount of gain reduction bright areas are clipping areas i e signal peaks are radically cut off dark areas show the effect of the program limiter The limiter is activated when the adjusted threshold is exceeded for more than 20 ms so as to limit audible...

Page 20: ...ample a sampler As a result of this process a digital recording or a sampling event can be optimally set in level without any problem 6 1 2 The MULTICOM PRO In Mastering The mastering process is one of the most critical processing steps in recording In this production step it is the goal to achieve a maximum level copy of the recording without any noise or distortion In many applications it is fur...

Page 21: ...aradox 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 The resulting clipping cutting off of signal peaks produces high energy distortion upper harmonics which is abruptly added to the midrange tweeter signals For this reason weak power amps in particular must be protected by a limi...

Page 22: ...o peak to peak level in response to amplitude and duration The higher the average level and the time it remains at a high level the louder the program material will be perceived by the listener If you want to run your broadcast station at maximum average volume proceed as mentioned in chapter 6 1 2 The MULTICOM PRO In Mastering Please make sure that the maximum peak level is below the threshold of...

Page 23: ...A Interactive Knee Adaptation Compressor Threshold variable 40 dB to 20 dB Ratio variable 1 1 to oo 1 Threshold characteristics variable Interactive or Hard Knee Auto characteristics Wave Adaptive Compressor Auto Attack Time typ 15 ms at 10 dB 5 ms at 20 dB 3 ms at 30 dB Auto Release Time program dependent typ 125 dB s Output variable 20 to 20 dB PEAK LIMITER SECTION Type IGC Interactive Gain Cont...

Page 24: ...50 Hz General Export Model 100 120 V 200 240 V 50 60 Hz Fuse 100 120 V T 630 mA H 200 240 V T 315 mA H Power Consumption max 32 W Mains Connection Standard IEC receptacle PHYSICAL Dimension 1 3 4 44 5 mm 19 482 6 mm 8 1 2 217 mm Net Weight 2 2 kg Shipping Weight 3 4 kg BEHRINGER is constantly striving to maintain the highest professional standards As a result of these efforts modifications may be ...

Page 25: ...of receipt of the product at BEHRINGER 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 the product was originally developed and manufactured this modification adaptation shall not be considered a defect in materials or workmanship The warranty does not c...

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