AKG MP 40 User Manual

WMS 40WMS 400WMS 4000Wireless MicrophoneSystemsEverything you've always wanted to knowabout AKG WIRELESS TECHNOLOGY.

Wireless transmission technology is based onthe physical principles governing the propa-gation of electromagnetic waves. Radio, tele-vision, mobile te

www.akg.comMicrophones · Headphones · Wireless Microphones · Wireless Headphones · Headsets · Electroacoustical ComponentsSpecifications subject to ch

InterferenceOverlapping (interference) occurs when the bandwidths ofadjacent signals are too wide, or the carrier frequencies aretoo close together. P

Handheld microphone for lead andbacking vocals• Simple plug & play system• Time-tested AKG D 880Mmicrophone element• Over 35 hours of battery-powe

www.akg.com 11PresentersInstrumentsGuitar, bass and keyboardsoderAerobicsAKG WMS OVERVIEWThe MP 40 micropen for presenters• Maximum flexibility of use

The HT 40 handheld transmitter is an excel-lent choice for both handheld and stand-mounted use. Handheld microphones are alsosuited for applications w

VolumeMatches the output level of the receiver to theinput gain of the mixer. (For details refer topage 27)Frequency color code plateletReceivers usin

HEAD-WORN MICS FOR LEAD AND BACKING VOCALSAKG WMS 40 UHF FOR VOCALSMini XLR connectorA locking 3-pin mini XLR connector pro-vides a reliable connectio

C 420L A fully adjustable behind-the-neck steel headband withswiveling temple pieces provides a secure yet gentle fit. The cable is connected at the b

SO 40 SNAPON TRANSMITTER CONVERTS HARDWIRE MICS TO WIRELESSAKG WMS 40 UHF FOR VOCALSColor codeTransmitters and receivers tuned to the same carri-er fr

VolumeMatches the output level of the receiver to theinput gain of the mixer. (For details refer topage 27).Frequency color code plateletReceivers usi

Sooner or later in the life of every singer, thetime comes when you need to buy a ruggedstage microphone with that fabulous sound.But that’s when you

www.akg.com 19VolumeLets you match the output level to the input sensi-tivity of the mixing desk and the related gainstructure (see explanation on pag

Microphone The AKG C 407 omnidirectional microphonehas been optimized for speech pickup. A crocodile clip lets you use the microphoneremotely from the

VolumeSets the volume level of the headphone out-put. (See page 27 for details.)RF LEDIlluminates to indicate that RF signal isbeing received. If the

MORE GOODIES FOR PRESENTERSAKG WMS 40 UHF FOR PRESENTER22 www.akg.comPT 40 Bodypack transmitterwith C 444 L head-worn or C 417 L lavalier microphone.H

www.akg.com 23VolumeMatches the output level of the receiver to theinput gain of the mixer. (For details refer topage 27).Frequency color code platele

WIRELESS SYSTEMS FOR MAXIMUM MOBILITYAKG WMS 40 UHF FOR SPORTS24 www.akg.comTraining communicationsInstructions are often drowned out by ambient noise

www.akg.com 25C 444L A flexible plastic behind-the-neck arch and large supportpads resting gently against the head keep the C 444 Lsecurely in place w

RADIO LINKS FOR PORTABLE INSTRUMENTSAKG WMS 40 UHF FOR INSTRUMENTS26 www.akg.comMini XLR connectorA locking 3-pin mini XLR connector pro-vides a relia

VolumeMatches the output level of the receiver to theinput gain of the mixer. (For details see illus-tration below)AF LEDsThe green AF LED indicates t

As more and more affordable wirelessequipment became available, thedemand for high quality single and multi-channel wireless systems for sound com-pan

Jack plugSpring-loaded FlexJack™ 1/4" TS jackplug. The plug may be too short forsome recessed instrument jacks. Inthis case, use the supplied ext

www.akg.com 29FlexJack for all electric guitar modelsThe FlexJack connects to guitar jacks on the side (left) or top(right).FlexJack for all electric/

FREQUENCY MANAGEMENT, INTERFERENCE, AND PRACTICAL REMEDIESHOW MULTICHANNEL TECHNOLOGY WORKS30 www.akg.comThe electromagnetic wave spectrumThe electrom

www.akg.com 31WMS frequency band with TV transmitterIf you are faced with interference caused by a television station, select the carrier frequency of

FREQUENCY MANAGEMENT, INTERFERENCE, AND PRACTICAL REMEDIESHOW MULTICHANNEL TECHNOLOGY WORKS32 www.akg.comAutomatic frequency setupDuring concerts and

www.akg.com 33Shadow loss:Shadow loss means that the signal path from the transmitter to the antenna is interrup-ted by an obstacle.Multipath transmis

34 www.akg.comTROUBLESHOOTING HINTSHOW MULTICHANNEL TECHNOLOGY WORKSTroubleshooting hardwire and wireless microphones1. Problem: no sound (microphone

www.akg.com 35MODULAR SOLUTIONS FOR CUSTOM REQIREMENTSTHE WMS 400 MODULAR SYSTEMVocalsThe requirements of wireless systems varyfrom one user to anothe

36 www.akg.comThe SR 400 true diversity receiver is an optimalsolution if you need a reasonably-priced, high-performance multichannel system. Based on

www.akg.com 37Range of accessories for complex applicationsThanks to its compatibility with the WMS 4000 wirelesssystem, there is a wide range of acce

How it all started …A word to skeptics from the outset: thehistory of AKG is simply too good to have beenjust made up!1945: In a setting reminiscent o

38 www.akg.comHANDHELD AND BODYPACK TRANSMITTERS FOR EVERY CONCEIVABLE APPLICATIONAKG WMS 400 TRANSMITTERSThe HT 400 handheld and the PT 400 body-pack

www.akg.com 39Microphones for PT 400C 411 L C 416 L C 417 L C 419 L C 420 L C 444 L CK 77 WR L CK 77 WR L/P CK 97-C/L D 409 L MK GL CK 55 L LM 3 L C 4

THE USER FRIENDLY QUICK CHARGERTHE AKG WMS 400 SERIES CHARGER40 www.akg.comAny wireless microphone system depends onsufficiently charged batteries in

www.akg.com 41SRA 1 – Passive wideband dirctional antenna• For indoor and outdoor use, specifically for setting uplong-range radio links• For use with

HOW TO DEAL WITH INTERMODULATION AND KEEP YOUR FREQUENCIES STRAIGHTSETTING UP MULTICHANNEL SYSTEMS42 www.akg.comIdeal and real gain curvesof ideal and

www.akg.com 43Microphone A carrier frequency Spectrum analyzer traceIntermodulation of carrier frequencies A and BThe trace clearly shows that third-o

HOW TO DEAL WITH INTERMODULATION AND KEEP YOUR FREQUENCIES STRAIGHTSETTING UP MULTICHANNEL SYSTEMS44 www.akg.comCalculation of intermodulation product

www.akg.com 45Theater FrequenciesStage A Stage BAT 1 preset frequencies AT 1 preset frequencies increased by 150 kHz (0.15 MHz)Band I Band III Ban

MODULAR SOLUTIONS FOR PROFESSIONAL REQUIREMENTSSETTING UP MULTICHANNEL SYSTEMS46 www.akg.comFrequency bandsEach of the six bands contains legal freque

www.akg.com 47SELECTING, PLACING AND USING ANTENNASHOW TO USE ANTENNASSignal loss caused by the audienceThe human body reflects and weakens radio sign

www.akg.com 3The early productsIn 1945 the company began supplyingtechnical equipment such as movie projec-tors and loudspeakers to Vienna movietheate

48 www.akg.comCable attenuation setting vs. cable length in complex systemsThe CLA cable attenuation setting on the booster(s) and antenna splitter(s)

www.akg.com 49Stadium (theater, opera house) example 1:Active directional antennas set up next to the receivers atthe FOH mixing position.Benefits:• C

MODULAR SOLUTIONS FOR PROFESSIONAL REQUIREMENTSTHE WMS 4000 MODULAR SYSTEM50 www.akg.comSpeech Vocals Guitar/BassInstruments Installed sound Live so

www.akg.com 51HT 4000• Wideband UHF handheld transmitter with interchange-able microphone elements and metal die-cast body• Preprogrammed factory pres

The WMS 4000 handheld and bodypacktransmitters are two truly universal productsthat will meet the toughest requirements.Both the HT 4000 and PT 4000 h

www.akg.com 53“Silent Mode” settingWMS 4000 transmitters feature a “silent mode” thatallows you to set all system parameters, e.g., fre-quency, gain e

The SR 4000 True Diversity Receiver offersmaximum convenience with state-of-the-arttechnology and the widest range of functionsin its class. Naturally

www.akg.com 55Logic Out and Output Level SelectorThe Logic Out supplies the following information: first, a sig-nal indicating the mute status of the

56 www.akg.comAKG WMS CU 4000The CU 4000 Charging Unit revolutionizes bat-tery management for wireless systems. Theheart of the charging system is the

www.akg.com 57BP 4000 Intelligent quick-replacement battery packInternal RAMRecords charging/discharging processes and providesa database for optimizi

The breakthroughAt the beginning of the 1950s, the twoambitious founders of AKG achieved a break-through with completely revolutionary techno-logies.

58 www.akg.comOne or several PS 4000 antenna splitters canbe used to set up complex systems with longantenna cables, distributed antenna networksfor r

www.akg.com 59Selecting antenna cablesAntenna cables are needed for feeding the signal of a remote anten-na to the receiver. However, all antenna cabl

60 www.akg.comANTENNAS TAILORED TO EVERY SITUATIONAKG WMS 4000 ANTENNAS/ACCESSORIESSelecting and placing antennasThe antenna is the “ear” of the radio

www.akg.com 61SRA 1 – Passive wideband directional antenna• For indoor and outdoor use, in particular for setting up long-range radio links• For use w

62 www.akg.comThe HUB 4000 is the intelligent hardwareinterface between a WMS 4000 wirelesssystem and one (or several) PCs. No moreneed for cumbersome

www.akg.com 63The MCS 4000 Mission Control Software allo-ws you to display the entire setup of a WMSsystem on screen and to edit all settings sim-ply

64 www.akg.comThe PSU 4000 is a central power supply unitfor all components of the WMS 4000system. A stable, interference-free voltage(15 V/2 A or 15

www.akg.com 65Integrating an HPA headphone amplifier intothe WMS 4000 system makes life a lot easierfor the FOH engineer. During the performance,the a

66 www.akg.comWireless systems are becoming increasinglypopular for conference centers and seminarhotels. Unlike open-air events and large-scaleperfor

Room 1 Room 4AntennaboosterCU 4000PSU 40008 x SR 4000 2 x PS 4000AntennaboosterZAPD 21AntennaboosterZAPD 21ZAPD 21AntennaboosterZAPD 21ZAPD 21ZAPD 21R

and these products rapidly became one of themainstays of the company. AKG was also quickto introduce digital technology: the companymade its debut at

68 www.akg.comFitting all components into flight cases as wellas the shortest possible setup time are essentialfor festivals with several acts perform

www.akg.com 69AKG WMS PRACTICAL EXAMPLES

70 www.akg.comAlthough most venues are equipped withfixed wireless installations, special perfor-mances frequently require specific mobilesystems. The

www.akg.com 71WMS 4000 mobile rackFront view of the rack. The receivers and antenna splitters are clearly visible. Hard tobelieve that all these compo

EXAMPLE: 16-CHANNEL SYSTEM FOR MOBILE USEWMS 4000 16-CHANNEL SETUP72 www.akg.comAKG WMS PRACTICAL EXAMPLES

www.akg.com 73AKG WMS PRACTICAL EXAMPLES

74 www.akg.comAs regards planning, technology, and monito-ring, wireless installations in opera houses posea particular challenge. Unfailingly high so

2 x RA 4000 BDressing roomStageSound Cabin70 mSafety curtainZAPD 21SRA 2BSRA 2BZAPD 21Antenna cablewww.akg.com 75AKG WMS PRACTICAL EXAMPLES

EXAMPLE: 46-CHANNEL SYSTEM FOR AN OPERA HOUSEWMS 4000 46-CHANNEL SETUPAntenna cable BAntenna cable AZAPD 21PS 4000PS 4000PS 40004 x SR 4000 4 x SR 400

PS 4000PS 4000PS 4000ZAPD 214 x SR 4000 4 x SR 4000 4 x SR 40004 x SR 4000 4 x SR 4000 4 x SR 4000PS 4000PS 4000PS 400024 channelswww.akg.com 77AKG WM

The case for wireless micsThe popularity of wireless systems is gro-wing continuously, and they are no longerfound only at open-air events, in theater

78 www.akg.com“The devil is in the details” is a saying thatis very often true of wireless systems. Even ifmultichannel setups are no problem for theW

0,5 – 1 mwww.akg.com 79AKG WMS PRACTICAL EXAMPLES

80 www.akg.comGuitar:You may need to try around for the best spot to attach the C 411 L to your guitar. Attaching the microphone on or near thebridge

www.akg.com 81Saxophone:Clip the C 419 L or D 409 on to the bell of the saxophone,align it with the edge and listen to the sound to identify thebest p

82 www.akg.comRECOMMENDED AKG WIRELESS SYSTEMS FOR SELECTED APPLICATIONSAPPLICATION GUIDEAKG WMS OVERVIEWAV/sound company PT 40/TM 40 HT 400, C 900/D

www.akg.com 83AKG WIRELESS SYSTEMS AT A GLANCEAKG WMS OVERVIEWAKG WMS OVERVIEWDiversityBacklit displayDiversity indicatorsRF/audio level LEDRF/audio b

84 www.akg.comALL THE SPECS AT A GLANCESPECIFICATIONSAKG WMS OVERVIEWCarrier frequency band:Modulation:Audio bandwidth:THD (1 kHz/rated deviation):S/N

www.akg.com 85ALL THE SPECS AT A GLANCESPECIFICATIONSAKG WMS OVERVIEWWireless microphones and microphone elementsC 535 WL 1Frequency range: 20-20,000

86 www.akg.comDEFINITIONS FROM A TO ZGLOSSARYAntenna CableCable specifically designed for RF signals.Used for connecting a remote antenna to areceiver

www.akg.com 87DEFINITIONS FROM A TO ZGLOSSARYCrosstalkThe undesired coupling of signals from onechannel to another channel.dB SPLDecibel Sound Pressur

www.akg.com 7Signal propagationAs in a game of billiards, it is often impossible to reach a goalvia a direct path. In the diagram on the left the red

88 www.akg.comDEFINITIONS FROM A TO ZGLOSSARYFeedbackWhen a microphone picks up amplifiedsound from a loudspeaker this signal willbe reamplified, pick

www.akg.com 89DEFINITIONS FROM A TO ZGLOSSARYcates its sensitivity to sounds arriving fromdifferent directions. Omnidirectional micro-phones “hear” eq

90 www.akg.comDEFINITIONS FROM A TO ZGLOSSARYThis effect, known as “proximity effect”,begins to become audible at a few hundredHz and at extremely clo

www.akg.com 91SELECTED KEYWORDSINDEXTerm PageAngle of sound incidence 13Antenna placement 6f, 47, 60, 78Automatic frequency search 32Automatic freque

NOTESAPPENDIX92 www.akg.comAKG WMS NOTES

www.akg.com 93AKG WMS NOTESNOTESAPPENDIX

NOTESAPPENDIX94 www.akg.comAKG WMS NOTES

www.akg.com 95AKG WMS NOTESNOTESAPPENDIX

NOTESAPPENDIX96 www.akg.comAKG WMS NOTES