WMS 40 WMS 400 Wireless Microphone Systems Everything you've always wanted to know about AKG WIRELESS TECHNOLOGY.
AKG PREFACE WIRELESS TECHNOLOGY FOR THE FUTURE A PIONEER IN ACOUSTICS FOR OVER 50 YEARS As more and more affordable wireless equipment became available, the demand for high quality single and multichannel wireless systems for sound companies, conference centers, public buildings, and live sound grew sharply, too. AKG responded to this trend early on, developing a specific line of products RF technology in day-to-day work.
AKG HISTORY AKG - A LEGENDARY BRAND A PIONEER IN ACOUSTICS FOR OVER 50 YEARS How it all started … A word to skeptics from the outset: the history of AKG is simply too good to have been just made up! 1945: In a setting reminiscent of “The Third Man”, two men who had occasionally done business with one another before World War II met up again. They discovered that people sought distraction from the ruins around them at the movies, but that most of Vienna’s movie theaters had either been bombed or plundered.
AKG HISTORY C 12 1953 marked the birth of another AKG legend: with the development of the C 12, AKG introduced its first large-diaphragm condenser microphone with a remote-controlled polar pattern. Initially produced in batches of 50 units a month, the C 12 quickly became a top international product, being adopted by nearly all leading radio stations and recording studios. The first customers included the BBC in London, where the microphone’s design and quality made a deep impression.
AKG HISTORY AKG - A LEGENDARY BRAND A PIONEER IN ACOUSTICS FOR OVER 50 YEARS The breakthrough At the beginning of the 1950s, the two ambitious founders of AKG achieved a breakthrough with completely revolutionary technologies. They applied for patents for their moving coil technology and the principle of the mass loaded diaphragm. For the first time, they were successful in extending the frequency response to the bass range.
AKG HISTORY and these products rapidly became one of the mainstays of the company. AKG was also quick to introduce digital technology: the company made its debut at the 1980 Olympic Games in Moscow with the TDU 7000 time delay unit. The turning point 1984 was a fateful year for AKG. The company went public on the Vienna Stock Exchange as a “blue chip”, and performed outstandingly for many years.
AKG WMS BASICS HOW WIRELESS TECHNOLOGY WORKS HOW RADIO SIGNALS ARE TRANSMITTED The case for wireless mics The popularity of wireless systems is growing continuously, and they are no longer found only at open-air events, in theaters, and conference centers. The increasing selection of small portable wireless systems is the key to virtually unrestricted wireless freedom even for amateur musicians and lowbudget users, opening up a huge diversity of applications.
AKG WMS BASICS Signal propagation As in a game of billiards, it is often impossible to reach a goal via a direct path. In the diagram on the left the red ball represents the receiver, the while ball the signal, and the black ball an obstacle between the two. However, in practice we are not dealing with a single ball, but with very many simultaneously. Thus there is a comparatively high probability that at least one of the balls will reach its goal. 1.
AKG WMS BASICS HOW WIRELESS TECHNOLOGY WORKS HOW RADIO SIGNALS ARE TRANSMITTED Wireless transmission technology is based on the physical principles governing the propagation of electromagnetic waves. Radio, television, mobile telephone communications, microwaves, and light are all based on electromagnetic waves with different wavelengths.
AKG WMS BASICS Frequency Modulation (FM) Transforming an audio signal into a radio-frequency one and back again is achieved by means of frequency modulation (FM). This technology has also been used for decades in UHF radio to ensure reliable transmission and high signal quality. This involves imposing an audio signal on a radio-frequency (RF) sine-wave carrier that now begins to oscillate in time with the audio signal.
AKG WMS OVERVIEW THE WMS 40 MODULAR SYSTEM MODULAR SOLUTIONS TO MEET INDIVIDUAL REQUIREMENTS The requirements of wireless systems vary from one user to another. This calls for individual solutions, which is why AKG has created the WMS 40 series as a modular system that offers a wide range of solutions depending on the user’s preferences and chosen field of application.
AKG WMS OVERVIEW The MP 40 micropen for presenters • Maximum flexibility of use as handheld, clip-on, or pocket mic • Superior-quality C 407 capsule • Optional quick charging station Presenters Page 20 MP 40 PR 40 Handheld microphone for presenters • Simple plug & play system • Time-tested AKG D 880M microphone element • Over 35 hours of battery-powered operation Page 22 HT 40 Clip-on or head-worn microphone for presenters • Absolute freedom of movement • Choice of C 444 L head-worn or unobtrusive C
AKG WMS UHF VOCALS AKG WMS 40 UHF FOR VOCALS HANDHELD MICS FOR LEAD AND BACKING VOCALS The HT 40 handheld transmitter is an excellent choice for both handheld and standmounted use. Handheld microphones are also suited for applications where more than one person will talk into the microphone, such as talk shows or interviews with people in the audience. The design specification for the WMS 40 Series lists the best possible audio quality as the number one priority.
AKG WMS UHF VOCALS Angle of incidence To get a well-balanced, natural sound, sing to one side of the microphone or above and across the microphone’s top (left). If you sing directly into the microphone, it will not only pick up excessive breath noise but also overemphasize sibilants (right). Holding the transmitter Be sure never to cover the lower half of the wire-mesh cap with your hand. If you do, the microphone element's polar pattern will change from cardioid to omnidirectional.
AKG WMS UHF VOCALS AKG WMS 40 UHF FOR VOCALS HEAD-WORN MICS FOR LEAD AND BACKING VOCALS Head-worn microphones are becoming increasingly popular with vocalists who also play an instrument, or performers needing absolute mobility, particularly those who do not only sing but also dance on stage. The C 420 L and C 444 L from AKG are headworn condenser microphones that provide a perfect vocal sound, wide dynamic range, and good intelligibility. microphones deliver excellent sound.
AKG WMS UHF VOCALS Rack mounting Both the SR 40 and the SR 40 diversity can be used freestanding or rack mounted. An optional rack mounting kit allows you to install the receiver quickly and easily in any 19" rack. The half-rack, 1 U case lets you mount the receivers for six channels in just 3 U of rack space. AF LEDs The green AF LED indicates the input level to the audio section is within the optimum range. If the audio input level is too high, the PEAK LED will come on.
AKG WMS UHF VOCALS AKG WMS 40 UHF FOR VOCALS SO 40 SNAPON TRANSMITTER CONVERTS HARDWIRE MICS TO WIRELESS comed by the audio community when it was power supply (e.g., the AKG C 1000 S). The launched and has been appreciated by many transmitter can be powered from a dry or users ever since. rechargeable battery. A suitable charger is available from AKG.
AKG WMS UHF VOCALS XLR connector Plug it in. That's all you need to do to convert any hardwire dynamic mic to wireless. Obviously, you can use the SO 40 to add a radio link to any other audio source with an XLR output as well. The XLR connector on the SO 40 is wired for pin 2 hot (international standard). SO 40 Input wiring diagram 1 2 3 XLR connector (pin 2 hot) SR 40 Receiver Antenna The swiveling antenna is mounted on the front panel, allowing the receiver to be rack mounted.
AKG WMS UHF VOCALS AKG WMS 40 UHF FOR VOCALS THE TM 40 - MODULAR SYSTEM FOR SOPHISTICATED STAGE APPLICATIONS Sooner or later in the life of every singer, the time comes when you need to buy a rugged stage microphone with that fabulous sound. But that’s when you find yourself in a dilemma: do you need a hardwire or a wireless mic? A hardwire model is perfectly adequate for the rehearsal room, where it is often impossible to use a radio system due to the small distances involved.
AKG WMS UHF VOCALS D 3700M D 3800M C 5900M Wireless and supremely flexible The TM 40 has been designed for use with any Emotion/Tripower Series microphone. You can choose between the D 3700M cardioid dynamic or the D 3800M supercardioid dynamic, the C 5900M supercardioid condenser microphone, and the D 880M cardioid dynamic, or the C 900M cardioid condenser microphones.
AKG WMS UHF PRESENTERS AKG WMS 40 UHF FOR PRESENTERS THE MP 40 MICROPEN FOR PRESENTERS Designed for presentations, lectures, video shooting, and tour guide systems, the MP 40 micropen has been extremely popular for its versatility. Elegant and inconspicuous, it is small enough to fit in a jacket pocket. be necessary to increase the proportion of direct sound by placing the microphone closer to the user's mouth.
AKG WMS UHF PRESENTERS Detachable microphone Where gain before feedback is no problem, leave the microphone safely nested in its compartment. In more acoustically difficult environments, remove the microphone from the transmitter and attach it to the clothes nearer the user's mouth using the crocodile clip on the microphone. Put it in your pocket … … like a ballpoint pen. You can replace the colored clip with an inconspicuous black clip if necessary.
AKG WMS UHF PRESENTERS AKG WMS 40 UHF FOR PRESENTER MORE GOODIES FOR PRESENTERS You can use a C 444 L head-worn or C 417 L lavalier microphone with a PT 40 bodypack transmitter with 35 hours battery life. The C 444 L has been optimized for speech pickup and rests securely yet gently against the user's cheekbone. This setup provides unrestricted mobility and the microphone keeps clear of the user's field of vision. The C 417 L lavalier microphone is small and inconspicuous.
AKG WMS UHF PRESENTERS C 444 L A flexible plastic behind-the-neck arch and large support pads resting gently against the head keep the C 444 L securely in place without pinching. The flexible microphone arm absorbs mechanical impact and places the microphone near the corner of the user's mouth to prevent pop and breathing noise from being picked up as it would if the mic were positioned right in front of the mouth.
AKG WMS UHF AEROBICS AKG WMS 40 UHF FOR SPORTS WIRELESS SYSTEMS FOR MAXIMUM MOBILITY Wireless microphone systems are becoming increasingly popular in sports arenas, fitness or dance studios for efficient communication between athletes and trainers. The WMS 40 Sports System is a complete solution designed for the specific needs of athletes and trainers. The head-worn microphone affords maximum mobility. It is rugged, light, and will stay in place even if the user moves their head abruptly.
AKG WMS UHF AEROBICS C 444 L A flexible plastic behind-the-neck arch and large support pads resting gently against the head keep the C 444 L securely in place without pinching. The flexible microphone arm absorbs mechanical impact and places the microphone near the corner of the user's mouth to prevent pop and breathing noise from being picked up as it would if the mic were positioned right in front of the mouth.
AKG WMS UHF INSTRUMENTS AKG WMS 40 UHF FOR INSTRUMENTS RADIO LINKS FOR PORTABLE INSTRUMENTS More and more musicians prefer wireless microphones, so AKG was asked to create a wireless system specifically for "minimally invasive" miking of acoustic instruments with no on-board pickup. The proven AKG MicroMic Series microphones in conjunction with the AKG PT 40 bodypack transmitter and SR 40 portable receiver provide a solution offering exceptional quality, price/performance, and flexibility.
AKG WMS UHF INSTRUMENTS MicroMic C 411 L pickup For guitar, violin, viola, banjo, zither, or hammered dulcimer. Fix the pickup near the bridge (left). D 409 instrument MicroMics For saxophone, clarinet, tubas, trombone, trumpet. C 416 L instrument MicroMic To mic up an accordion, use two AKG C 416 L with a B 29L battery supply/mini mixer. C 419 L instrument MicroMics For saxophone, clarinet, tubas, trombone, trumpet. C 420 L head-worn MicroMic For flute and harmonica.
AKG WMS UHF GUITAR BASS AKG WMS 40 UHF FOR GUITAR & BASS THE GB 40 GUITARBUG FOR GUITAR AND BASS Too long. Too short. Forgot it. Tied up in knots. Tangled up. Gone. Pins reversed. Disconnected. Broken. Must be hard to find a guitarist or bassist who never got furious about their cables and the related mess. The convenient alternative from AKG is called the GB 40 guitarbug, a WMS 40 Microtools Series miniature transmitter specifically designed for guitars and basses.
AKG WMS UHF GUITAR BASS Guitar system in a bag The GB 40 guitarbug plus SR 40 is a convenient, userfriendly way to replace a guitar cable with a radio link. It is small enough to fit in any guitar case and will be ready to operate at any time. * Strings are not supplied with the system. ON/OFF switch with status LED. Volume Sets the volume level of the headphone output. (See page 27 for details.
AKG WMS MULTICHANNEL TECHNOLOGY HOW MULTICHANNEL TECHNOLOGY WORKS FREQUENCY MANAGEMENT, INTERFERENCE, AND PRACTICAL REMEDIES A knowledge of the laws of physics governing the propagation of radio waves is essential if one is to gain maximum benefit from the advantages of wireless transmission technology. Radio waves are electromagnetic waves that are used as a carrier for the transmission of signals. In physical terms, electromagnetic waves transport energy through space.
AKG WMS MULTICHANNEL TECHNOLOGY WMS frequency band with TV transmitter If you are faced with interference caused by a television station, select the carrier frequency of the wireless microphone system such that there is a separation of at least 500 kHz from the video carier, and 200 kHz from the audio carrier.
AKG WMS MULTICHANNEL TECHNOLOGY HOW MULTICHANNEL TECHNOLOGY WORKS FREQUENCY MANAGEMENT, INTERFERENCE, AND PRACTICAL REMEDIES Interference due to intermodulation can occur as soon as a radio-frequency circuit consisting of semiconductors or ferrites – like that of a WMS receiver – handles several RF signals at different frequencies. The number of disturbing frequencies (intermodulation products) increases exponentially wherever several radio links (frequencies) are used simultaneously.
AKG WMS MULTICHANNEL TECHNOLOGY Shadow loss: Shadow loss means that the signal path from the transmitter to the antenna is interrupted by an obstacle. Multipath transmission: A radio signal travels to the receiver not only along the direct path but also along several alternative routes as the signal is reflected off or diffracted around all kinds of structures. So the same signal arrives at the receiver at different points in time and in different conditions.
AKG WMS MULTICHANNEL TECHNOLOGY HOW MULTICHANNEL TECHNOLOGY WORKS TROUBLESHOOTING HINTS Troubleshooting hardwire and wireless microphones 1. Problem: no sound (microphone does not function) Possible cause Hardwire mic Wireless system Power supply Check whether … • phantom power on mixer is on • battery is o.k.
AKG WMS 400 OVERVIEW THE WMS 400 MODULAR SYSTEM MODULAR SOLUTIONS FOR CUSTOM REQIREMENTS Vocals The requirements of wireless systems vary custom solution, which is why AKG has crea- that offers a wide variety of solutions depenfrom one user to another. Every user needs a ted the WMS 400 Series, a modular system ding on your taste and preferred applications.
AKG WMS SR 400 UHF AKG WMS 400 RECEIVER THE FIRST STEP TO PROFESSIONAL MULTICHANNEL TECHNOLOGY The SR 400 true diversity receiver is an optimal System, you can set up even complex wireless solution if you need a reasonably-priced, high- systems using antenna splitters, power supply performance multichannel system. units and a whole range of high-performance external antennas.
AKG WMS SR 400 UHF Auto setup The receiver is automatically searching for clean frequencies, making system programming quick and easy. Infrared transmission The receiver is downloading frequency setup data to the transmitter. Each Preset contains legal frequencies for a specific country, region, or state Integrated frequency management database with country coded sets of frequencies for easy frequency selection.
AKG WMS HT 400 UHF AKG WMS 400 TRANSMITTERS HANDHELD AND BODYPACK TRANSMITTERS FOR EVERY CONCEIVABLE APPLICATION remaining battery life, low battery warning, microphone element. A noiseless On/Mute/ Off switch and status LED provide additional and current transmission mode. user convenience.
AKG WMS PT 400 UHF Microphones for PT 400 C 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 477 WR L For hints on how to use MicroMic Series products refer to pages 80 and 81. PT 400 Portable transmitter Flexible Antenna Maximum transmission reliability depends on a direct line of sight from the transmitter to the receiver. So be sure never to cover the antenna with clothes or makeup.
AKG WMS CU 400 THE AKG WMS 400 SERIES CHARGER THE USER FRIENDLY QUICK CHARGER Any wireless microphone system depends on sufficiently charged batteries in all the transmitters. There is nothing more embarrassing than a transmitter running out of juice in the middle of the show, or a voice fading as the transmitter battery dies. time, it is still a good idea to use fresh dry or The CU 400 puts an end to this kind of hassle. fully charged rechargeable batteries.
AKG WMS 400 ACCESSORIES SRA 1 – Passive wideband dirctional antenna • For indoor and outdoor use, specifically for setting up long-range radio links • For use with short antenna cables up to 5 m (16 ft) long SRA 2B – Active wideband dirctional antenna • For indoor and outdoor use, in particular for setting up radio links for distances up to 300 m (1000 ft) • Integrated high-performance antenna booster for use with antenna cables up to 200 m (655 ft) long (RG 213, in conjunction with 2 x AB 4000) • Remote
AKG WMS MULTICHANNEL TECHNOLOGY SETTING UP MULTICHANNEL SYSTEMS HOW TO DEAL WITH INTERMODULATION AND KEEP YOUR FREQUENCIES STRAIGHT Whenever two or more signals are transmitted by a non-ideal system, undesired intermodulation products will be created, causing distortions (see also WMS 400, p. 31). An ideal system would deliver an output signal that is identical to the input signal over the whole frequency range even at larger amplitudes, and no problems would arise.
AKG WMS MULTICHANNEL TECHNOLOGY Microphone A carrier frequency Spectrum analyzer trace Intermodulation of carrier frequencies A and B The trace clearly shows that third-order intermodulation products are only 38 dB lower in level than the carrier frequencies. Microphone B carrier frequency Spectrum analyzer trace Intermodulation trace on a spectrum analyzer display Third-order intermodulation products from three carrier frequencies.
AKG WMS MULTICHANNEL TECHNOLOGY SETTING UP MULTICHANNEL SYSTEMS HOW TO DEAL WITH INTERMODULATION AND KEEP YOUR FREQUENCIES STRAIGHT Frequency Management: a good idea for any multichannel system One way to run a multichannel system would be to hire an RF engineer with a university degree for doing nothing but the number crunching required for finding clean frequencies and keeping an eye on all the batteries in the system.
AKG WMS MULTICHANNEL TECHNOLOGY The far-near difference Unlike a hardwire microphone, even the best wireless system is susceptible to dropouts because the relative positions of persons and objects within the coverage area will change constantly during an event. At any moment, shadow loss and signal cancellation may coincide with intermodulation and sideband noise in such a way as to cause a dropout. The specified dropout probability under such conditions for the WMS 4000 is less than 0.1%.
AKG WMS MULTICHANNEL TECHNOLOGY SETTING UP MULTICHANNEL SYSTEMS MODULAR SOLUTIONS FOR PROFESSIONAL REQUIREMENTS Calculating intermodulation-free radio frequencies requires an enormous amount of computing power. AKG used up to 150 computers operating day and night to calculate new sets of carrier frequencies unless the computers were needed for other purposes. The results are available to all users of AKG wireless systems on the Internet at www.akg.com/frequencies.
AKG WMS ANTENNA TECHNOLOGY HOW TO USE ANTENNAS SELECTING, PLACING AND USING ANTENNAS Any radio system uses antennas to get a signal from one place to another. To ensure the best possible signal quality, it is imperative to select the optimum antennas for the system and place the antennas correctly. Reflections, shadow loss, or deep fades may weaken or even cancel the radio signal (dropout).
AKG WMS ANTENNA TECHNOLOGY HOW TO USE ANTENNAS SELECTING, PLACING, AND USING ANTENNAS Cable attenuation setting vs. cable length in complex systems Frequency bands I + II The CLA cable attenuation setting on the booster(s) and antenna splitter(s) depends on the frequency band, antenna type, cable type, cable length, and the position of the cable within the antenna line. For details on setting up an antenna network refer to the PS 4000 manual.
AKG WMS ANTENNA TECHNOLOGY Stadium (theater, opera house) example 1: Active directional antennas set up next to the receivers at the FOH mixing position. Benefits: • Consistent coverage of entire stage (no far-near problem) • Short antenna cable runs Drawbacks: • This setup will not work unless the FOH mixing position is high enough above the audience. • Risk of interference from local TV stations The best antenna system for enclosed spaces.
AKG WMS 4000 OVERVIEW THE WMS 4000 MODULAR SYSTEM MODULAR SOLUTIONS FOR PROFESSIONAL REQUIREMENTS capacity in hours, gain setting, or intermodulation-free frequencies. The WMS 4000 transmitters provide a “Silent Mode” in which you can set all system parameters such as carrier frequency, gain, etc. without transmitting an RF signal.
AKG WMS 4000 OVERVIEW HT 4000 • Wideband UHF handheld transmitter with interchangeable microphone elements and metal die-cast body • Preprogrammed factory presets • Up to 24 intermodulation-free frequency groups in each 30 MHz wide UHF band • Over 15 hours continuous operation on 2 AA size alkaline batteries or a minimum of 12 hours on optional BP 4000 battery pack PT 4000 • UHF bodypack transmitter with magnesium body • 1200 selectable frequencies in 30 MHz band • Backlit display and jog switch operation
AKG WMS HT 4000 AKG WMS 4000 TRANSMITTERS HANDHELD AND BODYPACK TRANSMITTERS FOR LIMITLESS OPTIONS The WMS 4000 handheld and bodypack transmitters are two truly universal products that will meet the toughest requirements. Both the HT 4000 and PT 4000 have a 30 MHz wide UHF band and up to 1200 selectable frequencies, with an RF output of up to 50 mW that ensures maximum transmission security even in difficult environments. All functions are controlled via an easy-to-use jog switch.
AKG WMS PT 4000 Microphones for HT 4000 D 880 WL 1 D 3700 WL 1 Microphones for PT 4000 LM 3 L C 411 L D 3800 WL 1 C 416 L C 417 L C 900 WL 1 C 419 L C 420 L C 5900 WL 1 C 535 WL 1 C 444 L C 477 WR L GN 15 HT C 55 L CK 77 WR L Detailed instructions on using MicroMic products see pp. 80/81.
AKG WMS SR 4000 AKG WMS 4000 RECEIVER THE CUTTING-EDGE TRUE DIVERSITY RECEIVER The SR 4000 True Diversity Receiver offers maximum convenience with state-of-the-art technology and the widest range of functions in its class. Naturally, the SR 4000 is optimally equipped for the setup of large multichannel systems, so that connecting antenna splitters, power supply units, computer networks, etc. is quite easy. The accurate battery life readout is a novel and invaluable feature for live sound applications.
AKG WMS SR 4000 Auto Setup Automatic frequency setting and finding of free channels. Environment Scan Analyzes the RF environment for interference-free transmission. Rehearsal Mode Setup Assistant for the optimal setting of the system parameters. Battery life display Display of transmitter’s remaining battery life in hours.
AKG WMS CU 4000 AKG WMS 4000 CHARGING SYSTEM THE INTELLIGENT WAY TO POWER WMS 4000 TRANSMITTERS The CU 4000 Charging Unit revolutionizes battery management for wireless systems. The heart of the charging system is the BP 4000 Battery Pack with built-in active monitoring. An integrated microprocessor continuously monitors battery status and accurately calculates the remaining battery life.
MOBILE CHARGING UNITS AKG WMS CU 4000 CU 4000 – Charging unit in a flight case Several charging units can be fitted into a rugged flight case as a compact solution for large systems. BP 4000 Intelligent quick-replacement battery pack Internal RAM Records charging/discharging processes and provides a database for optimizing charging parameters (Charge Balance Management).
AKG WMS PS 4000 AKG WMS 4000 ANTENNA SPLITTER THE INDESPENSABLE COMPONENT FOR LARGE WIRELESS SYSTEMS One or several PS 4000 antenna splitters can be used to set up complex systems with long antenna cables, distributed antenna networks for room sharing applications, or to feed the signal from a single antenna pair to several receivers. The 220 MHz bandwidth guarantees the full coverage of all channels available in the WMS 4000 system.
AKG WMS PS 4000 Selecting antenna cables Antenna cables are needed for feeding the signal of a remote antenna to the receiver. However, all antenna cables attenuate the antenna signal (cable attenuation). Since different types of cables have different attenuation values, each type will perform best at a different length. While low-attenuation cables are usually thicker and more expensive, they can be used for much longer runs.
AKG WMS 4000 ANTENNAS AKG WMS 4000 ANTENNAS/ACCESSORIES ANTENNAS TAILORED TO EVERY SITUATION With its antennas and optional accessories specially “tailored” to the WMS 4000 System, AKG offers the optimum solution to any type of application, allowing users to implement even the most complex antenna networks easily and efficiently. With its omnidirectional polar pattern, the RA 4000 B Booster Antenna is is a good choice for most applications.
AKG WMS 4000 ANTENNAS SRA 1 – Passive wideband directional antenna • For indoor and outdoor use, in particular for setting up long-range radio links • For use with short antenna cables up to 5 m (16 feet) long • Water-resistant design with BNC output SRA 2B – Active wideband directional antenna • For indoor and outdoor use, in particular for setting up radio links for distances up to 300 m (1000 feet) • Integrated high-performance antenna booster for use with antenna cables up to 100 m (330 feet) (RG 58) o
AKG WMS HUB 4000 AKG WMS 4000 NETWORK CONCENTRATOR THE LINK BETWEEN THE WMS 4000 AND A PC NETWORK The HUB 4000 is the intelligent hardware interface between a WMS 4000 wireless system and one (or several) PCs. No more need for cumbersome cabling; the HUB 4000 concentrates the data flow of up to eight receivers and connects easily to any PC with an Ethernet interface. of 128 receivers – from a single PC! The HUB 4000 meets all standards and requirements for smooth operation with PC components.
AKG WMS MCS 4000 AKG WMS 4000 MISSION CONTROL SOFTWARE YOUR COMPUTER AS A WMS 4000 CONTROL CENTER The MCS 4000 Mission Control Software allows you to display the entire setup of a WMS system on screen and to edit all settings simply by mouse click. All relevant data, such as RF level, audio level, diversity activity, battery status of the transmitters, Mute/Off etc. are displayed in real time on a graphic user surface, with important warning messages being inserted so as to catch the eye.
AKG WMS PSU 4000 AKG WMS 4000 POWER SUPPLY RELIABLE POWER SUPPLY FOR THE COMPLETE WMS 4000 SYSTEM The PSU 4000 is a central power supply unit for all components of the WMS 4000 system. A stable, interference-free voltage (15 V/2 A or 15 V/2.5 A respectively) at three outputs ensures a stable network. Valuable power strip outlets are thus kept free, and PSU 4000 Central power supply unit hum from poorly grounded power cables can clearly visible display indicates the current power supply status.
AKG WMS HPA 4000 AKG WMS 4000 HEADPHONE AMPLIFIER MONITORING WITHOUT A MIXER Integrating an HPA headphone amplifier into the WMS 4000 system makes life a lot easier for the FOH engineer. During the performance, the audio output signals of each receiver can be monitored directly, without having to bother with an extra mixer. This feature proves an invaluable advantage, particularly if the WMS 4000 system and the mixer are located in different rooms, with the audio connection as a potential error source.
AKG WMS PRACTICAL EXAMPLES WMS 4000 8-CHANNEL SETUP EXAMPLE: 8-CHANNEL SYSTEM FOR VARIABLE ARRANGEMENTS OF SEMINAR ROOMS Wireless systems are becoming increasingly popular for conference centers and seminar hotels. Unlike open-air events and large-scale performance facilities, the main focus here is not on coverage or the optimal utilization of as many channels as possible, but maximum flexibility.
AKG WMS PRACTICAL EXAMPLES Power cable Antenna cable A Antenna cable B 2 x RA 4000 B 2 x RA 4000 B Room 2 Room 3 Antenna booster Antenna booster ZAPD 21 2 x RA 4000 B 2 x RA 4000 B Antenna booster Antenna booster ZAPD 21 Room 1 Room 4 ZAPD 21 ZAPD 21 ZAPD 21 ZAPD 21 PSU 4000 CU 4000 8 x SR 4000 www.akg.
AKG WMS PRACTICAL EXAMPLES WMS 4000 10-CHANNEL SETUP EXAMPLE: 10-CHANNEL SYSTEM FOR TOUR SOUND Fitting all components into flight cases as well as the shortest possible setup time are essential for festivals with several acts performing in succession. While one performer is on stage, backstage preparations for the following act must be completed so that it can be started without any drawn-out interruptions due to alterations or soundchecks.
AKG WMS PRACTICAL EXAMPLES www.akg.
AKG WMS PRACTICAL EXAMPLES WMS 4000 16-CHANNEL SETUP EXAMPLE: 16-CHANNEL SYSTEM FOR MOBILE USE Although most venues are equipped with fixed wireless installations, special performances frequently require specific mobile systems. The reasons for this may vary, but the basic requirements are the same: a highperformance wireless system in a portable rack, whose audio signals can be fed to the local system simply through a multicore cable.
AKG WMS PRACTICAL EXAMPLES WMS 4000 mobile rack Front view of the rack. The receivers and antenna splitters are clearly visible. Hard to believe that all these components are powered by just two power supply units (see the three blue LEDs). WMS 4000 Wiring Even large systems do not have to drown in cable clutter. All cable runs are clearly visible, while the reduced number of cables helps diminish hum and improve heat dissipation from the rack.
AKG WMS PRACTICAL EXAMPLES WMS 4000 16-CHANNEL SETUP EXAMPLE: 16-CHANNEL SYSTEM FOR MOBILE USE 72 www.akg.
AKG WMS PRACTICAL EXAMPLES www.akg.
AKG WMS PRACTICAL EXAMPLES WMS 4000 46-CHANNEL SETUP EXAMPLE: 46-CHANNEL SYSTEM FOR AN OPERA HOUSE As regards planning, technology, and monitoring, wireless installations in opera houses pose a particular challenge. Unfailingly high sound quality and "invisible" installation of the components are basic requirements for offering the audience a unique auditory experience. that is rather hositle to RF propagation.
AKG WMS PRACTICAL EXAMPLES Stage Dressing room 2 x RA 4000 B Safety curtain 70 m SRA 2B SRA 2B Sound Cabin ZAPD 21 ZAPD 21 Antenna cable www.akg.
AKG WMS PRACTICAL EXAMPLES WMS 4000 46-CHANNEL SETUP EXAMPLE: 46-CHANNEL SYSTEM FOR AN OPERA HOUSE Antenna cable A Antenna cable B ZAPD 21 PS 4000 4 x SR 4000 PS 4000 4 x SR 4000 PS 4000 4 x SR 4000 PS 4000 PS 4000 4 x SR 4000 4 x SR 4000 22 channels 76 www.akg.
AKG WMS PRACTICAL EXAMPLES ZAPD 21 PS 4000 4 x SR 4000 PS 4000 4 x SR 4000 PS 4000 4 x SR 4000 PS 4000 4 x SR 4000 PS 4000 PS 4000 4 x SR 4000 4 x SR 4000 24 channels www.akg.
AKG WMS PRACTICAL EXAMPLES WMS 4000 1-CHANNEL SETUP EXAMPLE: 1-CHANNEL SYSTEM FOR SPECIFIC ARCHITECTURAL REQUIREMENTS “The devil is in the details” is a saying that is very often true of wireless systems. Even if multichannel setups are no problem for the WMS 4000 thanks to frequency programs, Auto Setup etc., situations will arise where the greatest problem is not the number of channels but the correct design of a system with just one channel.
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AKG WMS FOR INSTRUMENTS AKG MICRO MICS FOR INSTRUMENTS HOW TO PLACE WIRELESS PICKUPS ON PORTABLE INSTRUMENTS – SOME USEFUL HINTS Guitar: 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 the bridge will usually give an excellent sound. (top left) Violin and viola: Attach the C 411 L on or near the bridge and try out several positions. (top center) Banjo: See guitar.
AKG WMS FOR INSTRUMENTS Saxophone: 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 the best position. For subtone playing, turn the microphone toward the center of the bell (marked wind noise!). Clarinet: Always use two microphones. Direct one microphone (e.g., C 535 or C 5900) toward the keys, the other toward the bell – the C 419 L or D 409 are ideally suited for this purpose.
AKG WMS OVERVIEW APPLICATION GUIDE RECOMMENDED AKG WIRELESS SYSTEMS FOR SELECTED APPLICATIONS Application 82 Budget Professional Premium AV/sound company PT 40/TM 40 HT 400, C 900/D 880, PT 400/C 444 HT 4000, D 3800/C 900, PT 4000/C 420 Bars and clubs HT 40/TM 40, PT 40/C 444 HT 400, C 900/D 880, PT 400/C 420 HT 4000, D 880/C 900, PT 4000/C 420 Sound systems (shopping malls, universities, etc.
AKG WMS OVERVIEW AKG WMS OVERVIEW AKG WIRELESS SYSTEMS AT A GLANCE Receiver Diversity Backlit display Diversity indicators RF/audio level LED RF/audio bargraphs w/peak hold Mute LED Peak LED Programmable status display Adjustable squelch Tone code squelch Selectable frequencies Integrated country-coded frequency database Frequency presets Max.
AKG WMS OVERVIEW SPECIFICATIONS ALL THE SPECS AT A GLANCE System SR 40 SR 40 diversity HT 40 PT 40 SO 40 snapon GB 40 guitarbug MP 40 micropen Carrier frequency band: 710-865 MHz 710-865 MHz 710-865 MHz 710-865 MHz 710-865 MHz 710-865 MHz 710-865 MHz Modulation: Audio bandwidth: THD (1 kHz/rated deviation): S/N (A-weighted): Power requirement: FM 40-20.000 Hz typ. 0,8% FM 40-20.000 Hz typ. 0,8% FM 40-20.000 Hz typ. 0,8% FM 40-20.000 Hz typ. 0,8% FM 40-20.000 Hz typ. 0,8% FM 40-20.
AKG WMS OVERVIEW SPECIFICATIONS ALL THE SPECS AT A GLANCE TM 40 PR 40 diversity 710-865 MHz 710-865 MHz FM 40-20.000 Hz typ. 0,8% FM 40-20.000 Hz typ. 0,8% typ. 103 dB typ. 103 dB typ. >120 dB typ. >120 dB typ. >120 dB typ. >120 dB typ. >120 dB typ. >120 dB 1 x 1,5 V AAA size battery 2 x 1,5 V AAA size batteries – – – – – – – > 10 hours (AAA size dry battery); > 6 hours (rechargeable battery) typ. 5 mW (ERP) 26 Ø x 125 mm 30 g 1 AAA size 1.
AKG WMS GLOSSARY GLOSSARY DEFINITIONS FROM A TO Z Antenna Cable Cable specifically designed for RF signals. Used for connecting a remote antenna to a receiver. Antenna cables are typically coaxial and symmetrical. Signal attenuation depends on the frequency band of the signal as well as the length and quality of the cable and is quoted for a 100-m run of cable. Antenna Splitter Electronic network specifically designed for RF signals. Distributes an antenna output signal to several receivers.
AKG WMS GLOSSARY GLOSSARY DEFINITIONS FROM A TO Z Inside a bass drum 3 cm 140 dB Loud vocals, (one inch) measured in from the head front of the 130 dB mouth; Tom-toms threshold of 3 cm (one in.) pain distance; 120 dB 60 watt guitar Congas, 2 cm amp, at 30 cm (one in.) from (12 in.) 110 dB the head distance Cowbell at 10 cm (4 in.) Loud vocals, distance 100 dB at 15 cm (6 in.) distance Saxophone, Acoustic 90 dB trombone, guitar, played p, chords at 40 cm strummed with 80 dB (16 in.
AKG WMS GLOSSARY GLOSSARY DEFINITIONS FROM A TO Z Feedback When a microphone picks up amplified sound from a loudspeaker this signal will be reamplified, picked up again, etc., until the commonly known shrill howling (sometimes a lower midrange rumbling) sets in. In small rooms, feedback is usually caused by reflections. In this case, acoustic treatment of the walls should help. On stages with correctly set up FOH speakers it is the monitor speakers that may cause feedback.
AKG WMS GLOSSARY GLOSSARY DEFINITIONS FROM A TO Z Hypercardioid Ultra-directional Figureeight cates its sensitivity to sounds arriving from different directions. Omnidirectional microphones “hear” equally well in all directions while all others prefer sound from one (unidirectional) or two (bidirectional) directions. The polar diagram shows the threedimensional “hearing performance” of a microphone as a single curve.
AKG WMS GLOSSARY GLOSSARY DEFINITIONS FROM A TO Z This effect, known as “proximity effect”, begins to become audible at a few hundred Hz and at extremely close working distances, the output level may be up to 15 dB higher at 50 Hz than at 1 kHz. This corresponds to about 6 times the normal output voltage. Reflection When a signal wave hits an obstacle, it will be reflected, i.e., bounce off the obstacle's surface at an angle equal to the angle of incidence.
AKG WMS INDEX INDEX SELECTED KEYWORDS Term Page Angle of sound incidence Antenna placement Automatic frequency search Automatic frequency setup Bandwidth Battery care Cable attenuation Cable length Carrier frequency Carrier signal Characteristic Close-in miking Deep fade Dropout Dual antenna diversity Electromagnetic waves/Electromagnetic wave spectrum Electrosmog Environment Scan ERP Far-near difference Feedback Frequency band Frequency management Frequency modulation Handset Identification Intercept In
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www.akg.com Microphones · Headphones · Wireless Microphones · Wireless Headphones · Headsets · Electroacoustical Components AKG Acoustics GmbH Lemböckgasse 21–25, P.O.B. 158, A-1230 Vienna/AUSTRIA, Tel: (+43 1) 86 654-0*, Fax: (+43 1) 86 654-7516, www.akg.com, e-mail: sales@akg.com, Hotline: (+43 676) 83200 888, hotline@akg.com AKG Acoustics GmbH Bodenseestraße 228, D-81243 München/GERMANY, Tel: (+49 89) 87 16-0, Fax: (+49 89) 87 16-200, www.akg.com/de, e-mail: infode@akg.
