HT 4000

PT 4000

SR 4000

CU 4000

PS 4000

SRA 2B

PSU 4000

HPA 4000

MCS 4000

HPA/PSU 4000. SOUNDS.BETTER.

BACKGROUND.

WMS 4000.
Professional wireless users have long sought
tools of the trade that provide a balance of uncompromised audio with superior wireless performance. This challenge motivated AKGs engineers to create a system that offers both complex technology and incredible functionality.
AutoSetup and EnvironmentScan Backlit Displays
THE WMS 4000 SYSTEM. The new WMS 4000 transforms
concert performances, corporate presentations and worship leadership into satisfying experiences. The combination of quality engineering, exceptional flexibility, total versatility and user friendly operation has evolved into an exceptional new wireless system from AKG. Experience the creative power of AKG.

Modular System

T E C H N O L O G Y

M A K E

True Diversity Wideband UHF High RF Output
Control Plug-in Battery Charging System

with 2 AA size batteries

Smart Battery Management System

Battery Life 15 hours

Components Interchangeable Microphone Elements
AKGs Exclusive Acoustic Technology

Y O U R

W O R L D

B E T T E R

Speech Vocals Reinforcement

Guitar/Bass

Instruments

Installed Sound

Live Sound

TV Studio

Theater

Houses of Worship

HT 4000.
HANDHELDTRANSMITTER. HANDHELDTRANSMITTER.

Transform Yourself.

Capturing every nuance of vocal expression, the WMS 4000 System amplifies the energy of your performance and expands the interaction between artist and audience. Thus, the system creates satisfaction from an engineering perspective, as well the higher level of artistic
SIX INTERCHANGEABLE MICROPHONE ELEMENTS 100% AKG Acoustics: TEC Award winning C 900 Emotion Series D 880 Tri-Power D 3700, D 3800, C 5900, C 535.

communication.

The pilot tone system transmits all important transmitter data to the receiver for reliable, interference-free operation.
STATUS LED Indicates the systems current operating status.
BACKLIT DISPLAY Ensures easy setup and accurate status monitoring even on a dark stage.
The revolutionary WMS 4000 CU 4000 charger and BP 400 battery charging simple and re
The SBMS Smart Battery Management System ensures a battery life of 15 hours or 12 hours with the BP 4000 battery pack.
SOFT TOUCH ENAMEL FINISH Helps reduce handling noise.
JOG SWITCH Easy-to-use, single control for setting all function parameters. CHARGING AND PROGRAMMING CONTACTS Allows the optional BP 4000 battery pack to be charged inside the transmitter and new frequency Presets to be programmed by the AKG Service Department. ELECTRONICALLY LOCKABLE ON/OFF BUTTON AND PROTRUDING MUTE SWITCH Easily distinguishable, the two controls provide simple, but important functionality.

PT 4000.

REMAINING BATTERY LIFE The remaining battery life is illuminated in hours. GAIN MENU The Gain menu provides a choice of manual and automatic gain setting modes.
POCKETTRANSMITTER. POCKETTRANSMITTER.

DATA SHEET

MORE INFO
FREQUENCY PRESETS Intermodulation-free frequencies for setting up a multichannel system quickly and easily.1" JACK FOR REMOTE MUTE SWITCH Allows easy muting even if the bodypack transmitter is concealed.
ELECTRONICALLY LOCKABLE ON/OFF BUTTON AND PROTRUDING MUTE SWITCH
charging system includes the optional 00 battery pack. This system makes educes operating costs considerably.
RUGGED, PROFESSIONAL 3-PIN MINI XLR CONNECTOR Accepts all AKG microphones with a mini XLR connector including MicroMics, CK 77 WR and Discreet Acoustics Modular Series lavalier modules, etc.

STATUS LED

BACKLIT DISPLAY
s with a pair of AA size batteries
ENSCRIBABLE COLOR CODE ELEMENT

BNC ANTENNA INPUTS For connecting a pair of antennas or a complex antenna network. LOCKING DC INPUT For secure connection to a local or central power supply, e.g., PSU 4000. LOGIC OUT For remote control of functions on external devices such as automatic microphone mixers or media control systems.
DATA I/O For remote control from a PC using MCS 4000 control software. PROFESSIONAL XLR AND 1/4" AUDIO OUTPUTS With output level selector.
ALL-METAL HALF-RACK CASE Complete with rugged rack mounting kit. BACKLIT DISPLAY High-contrast black mask color display provides a clear readout of all system parameters. PROGRAMMABLE STATUS LED RING Provides a clearly visible indication of battery, audio level, RF level, or diversity status. JOG WHEEL For easy receiver setup.
Allow control and monitoring of multichannel systems from a PC.

manually. CONFIDENCE.

T E C H N O T E FIRMWARE REPROGRAMMING. The wireless world changes rapidly and so do frequency plans all over the world. Therefore, many less flexible systems may not be used legally when their programmed frequencies are reallocated. If the need arises, authorized AKG Service Centers will be glad to reprogram all WMS 4000 components for new frequencies quickly to legalize your system again.
Dependability overcomes concern. Youre no
longer at the mercy of conventional equipment and its inconsistencies, but free to maximize your creativity. Interferencefree reception, accurate response and dependable technology free your mind to focus on what you do bestperform.

CU/BP 4000.

CU 4000 Charger
Charger for two HT 4000 / PT 4000 transmitters or BP 4000 replacement battery packs. Battery packs charge quickly and easily without having to be removed from the transmitter. The Quick Charge System will charge batteries to capacity within one hour or less. The SBMS system permanently monitors battery parameters. If necessary, a recovery function allows aging battery packs to be rejuvenated to prolong their useful life.
CHARGINGSYSTEM. CHARGINGSYSTEM.

CHARGING STATUS LED

RECOVER BUTTON AND LED Starts a battery recovery cycle. The SBMS detects and indicates the need for battery servicing, which will prolong the useful life of the battery pack.
Maximum convenience: The SBMS Smart Battery Management System monitors the charging process to prevent battery pack overcharging and ensures more than 1000 complete charging cycles per battery pack.

BATTERY CARE. Rechargeable batteries are known to suffer from memory effect. The capacity of a rechargeable battery will decrease over time if it is not fully discharged. If a battery is discharged only to 50% of its capacity over many charging cycles, it finally believes its capacity is only 50% and cannot be fully charged any more. To eliminate memory effect, we recommend completely discharging and recharging the battery pack periodically (recovery cycle). The SBMS permanently monitors battery parameters and detects the need for a recovery cycle. The RECOVER LED lights to indicate it is time for servicing the battery pack. Since a recovery cycle may take 14 hours, the best time to run it is during the night. In any case, you will need to start the recovery cycle manually. If you service your battery pack regularly it will retain its maximum capacity throughout its useful life.
Two-compartment power management allows simultaneous quick-charging of two battery packs.
TWO UNIVERSAL CHARGING COMPARTMENTS Accepts HT 4000 and PT 4000 transmitters or BP 4000 battery packs.
Several chargers can be mounted in a rugged
LOCKING DC INPUT For secure connection to a local or central power supply, e.g., PSU 4000.
flightcase as a compact, roadworthy solution for large systems.
BP 4000 intelligent, quick-replacement battery pack
INTERNAL RAM Stores charge/discharge process data and provides a database for optimizing charging parameters (Charge Balance Management).
DATA INTERFACE Sends battery status information to the transmitter electronics for accurate capacity readout.
INTEGRATED TEMPERATURE SENSOR Protects the battery pack from overcharging and damage.

s, easy to use

REMAINING BATTERY LIFE READOUT Displays the current battery capacity in hours.
SMART BATTERY MANAGEMENT SYSTEM. An environmentally friendly money saver, the SBMS Smart Battery Management System is the heart of a completely new charging technology. It monitors battery status and controls the charging process. The battery status visibly seen in remaining hours of battery life on the transmitter and receiver displays, so you can recharge the battery pack before it loses power. The SBMS includes a number of intelligent monitoring functions. Inflection Point and Peak Voltage Detect stops the charging in time, while an integrated temperature sensor in the battery pack protects the battery pack from overheating. The Charge Balance Management feature makes sure that only as much energy will be fed to the battery pack as had previously been drawn from it. A self-discharge counter ensures correct charging after the battery pack has been stored for a long time. The battery pack uses an integrated database and charger interface to set its own charging current.

PS 4000.

THE SPIRIT OF EXCELLENCE.
ANTENNASYSTEM. ANTENNASYSTEM.
The WMS 4000 tells a story
of team spirit and excellence in engineering. The knowledge and creative resources of AKG designers, supported by painstaking attention to every detail, made this excellent system possible. We are witnessing a new era of wireless technology that offers an entirely new meaning to the word professional. It brings perfection in its purest form to the world of professional audio.
2 BNC ANTENNA INPUTS For connecting active or passive antenna system components. LOCKING DC INPUT For secure connection to a local or central power supply, e.g., PSU 4000.
Wideband antenna splitter for four SR 4000 receivers. Expandable for up to 50 or more receivers. Optimum performance at a reasonable cost.
2 EXPANSION OUTPUTS For connecting another antenna splitter.
STATUS DISPLAY Lets you check the current operating condition of the entire antenna network at a glance. SWITCH BANK FOR MATCHING THE UNIT TO THE CONNECTED CABLE LENGTH Set of calibration switches for optimizing RF input signal quality.
8 BNC ANTENNA OUTPUTS For connecting one to four diversity receivers together.
The antenna inputs and outputs carry a power bus for remote powering of connected antenna system components. This keeps wiring simple and ensures quick and easy system installation.
SELECTING AND PLACING RECEIVING ANTENNAS. The receiving antenna is the ear of a radio system. To get the best possible signal quality, select and place your antennas carefully. Antennas have polar patterns like microphones, so depending on the application at hand you may need Yagi (cardioid/hypercardioid), log periodic (shotgun), or omnidirectional antennas. If the transmitters will be used within a rather small area such as a stage, use directional antennas. Directional antennas are generally used to overcome long distances or suppress off-axis interference, e.g., in open-air concert situations. Omnidirectional antennas are ideal for near-field applications where no off-axis interference is expected, e.g., indoor events (most directional antennas are big and difficult to conceal) or multipurpose halls with no preferred direction.
SRA 1 passive, wideband directional antenna

HUB 4000.

HUB 4000
PC network interface for connecting up to eight SR 4000 receivers to an Ethernet network. The HUB 4000 can be expanded as desired using standard PC components such as Ethernet hubs or wireless LAN interfaces.
NETWORKCONCENTRATOR. NETWORKCONCENTRATOR.
DATA I/O For reliable communication with a PC and the MCS 4000 Mission Control Software.
8 NETWORK CONNECTORS For up to eight diversity receivers.
ON/OFF SWITCH STATUS LED ACTIVE CHANNEL DISPLAY LOCKING DC INPUT For secure connection to a local or central power supply, e.g., PSU 4000.

A sing

Clear, easy-to-read graphic representation of the local RF environment for optimal fr
PURE PERFECTION. Our customers stringent requirements provided the original inspiration for our engineers. Their dreams materialized into a line of precisely matched components that make the WMS 4000 Series an indispensable tool for professional wireless applications. Driven by a broader vision of audio technology, the innovative spirit of AKG has created a system of unique adaptability for any live sound situation. It is an excellent choice for every venue and every kind of event. Its integrated intelligence enables the system to be expanded easily as the evolution of audio technology progresses. The WMS 4000 is designed and built to stand the test of time.

H E L P F U L H I N T S

PC SUPPORTED ONSTAGE SETUP. You can make your wireless multichannel system even easier to use and even more reliable by connecting the WMS 4000 network components to standard computer peripherals. This allows you to send receiver data through the HUB 4000 to a wireless LAN and receive them on a tablet PC. You can take the computer on the stage and monitor important parameters such as RF levels right where the action is. This speeds up system setup and increases the reliability of the wireless system.

MCS 4000.

MISSIONCONTROLSOFTWARE.
Remote control and remote monitoring software. Displays all status indicators of a complete multichannel system on a single screen. Special indicators including minimum/peak bar graph meters show current signal levels and give an indication of overall signal quality. The program includes a graphic spectrum analyzer and a frequency management database that can be updated through the Internet.

gle screen shows all important parameters.

equency setting.

Program your multichannel system in a series of easy steps. Frequency Presets can be updated via the Internet.
GET-A-CUP SETUP. Finding and setting the right frequencies for a multichannel system is a difficult and time-consuming job. The WMS 4000 provides several functions including AutoSetup and EnvironmentScan to speed up the process. The MCS 4000 from AKG is an incredibly convenient software tool. It scans the systems UHF band and uses an integrated frequency management database to calculate optimum frequencies. It automatically programs the frequencies into the receivers via the HUB 4000 to complete the setup while you wait just a few minutes.

HPA/PSU 4000.

HPA 4000 headphone amplifier
Headphone amplifier with eight inputs for SR 4000 receivers and one headphone output.
EIGHT 1/4" LINE LEVEL AUDIO INPUTS ON/OFF SWITCH HEADPHONE JACK DISPLAY indicates the current active channel. JOG WHEEL Selects the signal you wish to monitor and sets the volume. LOCKING DC INPUT For secure connection to a local or central power supply, e.g., PSU 4000.
PSU 4000 central power supply
Powers up to 12 SR 4000 receivers plus antennas via three PS 4000 antenna splitters to keep wiring simple. Also powers the CU 4000, HPA 4000, and HUB 4000.
3 DC OUTPUTS 100 VAC - 230 VAC INPUT
ON/OFF SWITCH STATUS DISPLAY
Microphones for the HT 4000

D 880 WL 1 D 3700 WL 1

D 3800 WL 1

C 900 WL 1

C 5900 WL 1

C 535 WL 1

GN 15 HT
Microphones for the PT 4000

LM 3 L

C 411 L

C 416 L

C 417 L

C 419 L

D 409 L

C 420 L

C 444 L

C 477 WR L

CK 55 L

CK 77 WR L

APPLICATIONS.
1. MULTICHANNEL SYSTEM WITH MEDIUM-LENGTH CABLES
19 Rack / Front view 19 Rack / Rear view Internal antenna cables (MK PS) External antenna cables AC power/12 V DC cables Fig. 1
2. MULTICHANNEL SYSTEM WITH LONG CABLES
Refer to fig. 1 for antenna distribution diagram. 19 Rack / Front view 19 Rack / Rear view
2 AB 4000s max. 2 AB 4000s max.
Internal antenna cables (MK PS) External antenna cables Antenna splitter expansion cables (MK PS) 12 V DC cables AC power cables
3. MULTICHANNEL SYSTEM WITH DIFFERENT-LENGTH CABLES
19 Rack / Front view Refer to fig. 1 for antenna distribution diagram. 19 Rack / Rear view
Internal antenna cables (MK PS) External antenna cables Antenna splitter expansion cables (MK PS) AC power/12 V DC cables Data cables Audio cables to HPA 4000 headphone amplifier

2 AB 4000s max.

Carrier frequency range Modulation Audio bandwidth THD Signal/noise ratio RF radiation Battery life Dimensions Net weight Standard accessories 650 to 680, 680 to 710, 720 to 750, 760 to 790, 790 to 820 and 835 to 863 MHz FM 35 to 20,000 Hz <0.3% typical 120 dB(A) 50 mW max. (ERP) 2 AA size alkaline batteries: 15 hours; BP 4000: 12 hours length: 239 mm (9.4 in.); diameter: 39 mm (1.5 in.) 320 g (11.3 oz.) SA 63 stand adapter, 2 AA size dry batteries, Color Coding Kit

Carrier frequency range Modulation Audio bandwidth THD Signal/noise ratio RF radiation Battery life Dimensions Net weight Standard accessories 650 to 680, 680 to 710, 720 to 750, 760 to 790, 790 to 820 and 835 to 863 MHz FM 35 to 20,000 Hz <0.3% typical 120 dB(A) 50 mW max. (ERP) 2 AA size alkaline batteries: 15 hours typical; BP 4000 rechargeable battery pack: 12 hours typical 70 x 90 x 25 mm (2.8 x 3.5 x 1 in.) 320 g (11.3 oz.) belt clip, 2 AA size dry batteries, Color Coding Kit
RF carrier frequency range Modulation Audio bandwidth THD Signal/noise ratio Audio outputs Dimensions Weight Standard accessories Optional accessories 650 to 680, 680 to 710, 720 to 750, 760 to 790, 790 to 820 and 835 to 863 MHz FM 35 to 20,000 Hz >0.3% typical 120 dB(A) balanced 3-pin XLR; unbalanced TS 1/4" jack; output level adjustable to -30, 0, +6 dB 200 x 44 x 190 mm (7.8 x 1.7 x 7.4 in.) 972 g (2.2 lbs.) Power supply, Color Coding Kit, 2 UHF antennas, RMU 4000 rack mounting kit MK 9/10 microphone cable
AKG Acoustics GmbH Lembckgasse 2125, 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 Bodenseestrae 228, D-81243 Mnchen/GERMANY, Tel: (+49 89) 87 16-0, Fax: (+49 89) 87 16-200, www.akg.com/de, e-mail: infode@akg.com Hotline: (+49 89) 87 16-22 50, hotlinede@akg.com AKG Acoustics, U.S. 914 Airpark Center Drive, Nashville, TN 37217, U.S.A., Tel: (+1 615) 620-3800, Fax: (+1 615) 620-3875, www.akgusa.com, e-mail: akgusa@harman.com
For detailed information on WMS 4000 Series and other AKG products contact your distributor or visit our website: www.akg.com Specifications subject to change without notice.

02/04/PROA 1503

world wide wireless with AKG

www.akg.com

schaefer-design.at

HT 4000 / PT 4000

Description
The AKG PT 4000 bodypack and HT 4000 handheld transmitters have identical transmission characteristics, with a maximum radiated output power of 50 milliwatts. Through special signal companding circuits (compression and expansion), dynamic range capability greater than 120 dB is delivered at the receivers output. Audio bandwidth of the system is uniform from 35 Hz to 20 kHz. The usable distances between the receiver and transmitter can be 100 meters (330 ft) or more. Individual handheld microphone and bodypack transmitters are factory-matched to each receiver. Each system operates on a 30 MHz-wide UHF channel and includes a set of Presets containing Intermodulation Free frequencies as well as a search tuning mode with access to up to 1,200 switchable frequencies. In the U. S., a total of three bands of 30 MHz channels may be selected. The user may expect a maximum of approximately 50 usable channels in a given locale (depending on the local TV channels and wireless frequencies used). In addition to the modulated audio signal, the transmitters send out a data-encrypted PilotTone (at 32,768 Hz) to send important information such as battery status, mute status and more to the systems receiver. The HT 4000 handheld and PT 4000 bodypack transmitters can be powered by 2 AA batteries and normal battery life of up to 15 hours can be expected from standard 1.5-volt alkaline cells. An optional BP 4000 rechargeable battery pack is available, featuring Smart Battery Management System Software, and can provide battery life of up to 12 hours plus the remaining battery life can be monitored on the transmitter's & receiver's displays. Both transmitters come with a backlit display and a jog element for easy setup and full status control. The display features information on selected frequency, gain setting, and remaining battery life in hrs. as well as LOCK and MUTE status. Beside the display and the jog element, the controls on the HT 4000 & PT4000 include lockable ON/OFF button and a separate MUTE switch whose position is easily distinguishable as well as a status indication LED. An inscribable color code facility helps easy channel recognition in multi-channel systems. The PT 4000 bodypack accepts both microphone and line-level input signals, and the input sensitivity can be adjusted from dB for optimum gain matching. The antenna is a quarterwavelength type that affords easy concealment and comfortable wearing. A lockable TA-3F Mini-XLR connector is available for easy connection of a broad range of AKG headset, lavalier or instrument mics (e.g. MicroMic Series microphones) as well as instrument cables. The PT 4000 also comes with a 2.5-mm jack connector suitable for the optional RemoteMuteSwitch device RMS 4000. The HT 4000 handheld transmitter comes with a rugged mechanical solution for interchangeable microphone modules. Six of AKGs most popular handheld "vocal" microphone head units are available for the handheld transmitter model. The microphones are the dynamic models D 880 WL1, D 3700WL 1, D 3800 WL 1 as well as the condenser models C 900 WL1, C 5900 WL 1, and C 535 WL 1.

Architects and Engineers Specifications
The wireless system shall operate over a 30 MHz UHF frequency range in one of 6 bands from 680 to 863 MHz, with a wide range of possible frequency settings. The wireless microphone system shall incorporate factory-optimized sets of both transmission and receiving frequency modules that are programmed into both transmitters and receivers. Each frequency set shall comprise a 30 MHz UHF band and offer up to 1,200 discrete operating frequencies within that band, with transmitter power not exceeding 50 milliwatts. Both handheld and bodypack type transmitters shall be provided. The bodypack transmitter shall accommodate both microphone and line level inputs. The transmitters shall operate with a companding system that is complemented by the receiver, providing an A-weighted system dynamic range in excess of 120 dB. The transmitters shall indicate input overload via an LED indicator and on a backlit display battery lifetime shall be displayed in hours as well as the transmitting frequency. Handheld transmitters shall have a maximum diameter of 39 mm and a length, including antenna, no greater that 239 mm. The wireless microphone system shall be the AKG Acoustics Model WMS 4000.
AKG Acoustics GmbH Lembckgasse 2125, 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, U.S. 914 Airpark Center Drive, Nashville, TN 37217, U.S.A., Tel.: +1-615-620-3800, Fax: +1-615-520-3875, www.akgusa.com, e-mail: akgusa@harman.com
For detailed information on WMS 4000 and other products from AKG contact your dealer or visit www.akg.com Specifications subject to change without notice. 02/04/Proa-Nr. 1453

1.5 inch (39 mm)

CU 4000 / BP 4000
The AKG charging system 4000 consists of the CU 4000 charging unit and the BP 4000 battery pack. The charging unit itself is a stand-alone unit in a rugged plastic housing, featuring 2 charging compartments, each mechanically designed to hold either one HT 4000 handheld transmitter, a PT 4000 bodypack transmitter or a BP 4000 spare battery pack. Two battery packs can be charged simultaneously by the CU 4000, if the battery pack is installed in either the HT 4000 or PT 4000 transmitters. There is no need to remove the battery pack from the transmitters since these transmitters are equipped with on- board charging contacts for a plug-in charge. The sophisticated charging electronics of the CU 4000 comprises revolutionary functions to carefully charge and service the BP 4000 battery packs over the full lifetime of the battery. The basic charging function is based on a trickle charge system with so-called inflection point switch-off automation. Safety switch off occurs by detection of the peak voltage, the negative voltage slope or a predetermined time out. Thus the battery pack is prevented from overcharging. An integrated two-slot power management system allows the Charging unit to charge two battery packs simultaneously in approximately 1 hour. Since the BP 4000 battery pack incorporates microprocessor-controlled surveillance intelligence, there is a permanent data stream between the Charging Unit and the Battery Pack to protect the batteries from any damage caused by the charging process. A charge balance management circuit controls the exact amount of energy to be charged in the pack as the amount that was taken out of the pack (2nd level overcharge protection). The charge balance management also features a self-discharging counter used to detect the exact battery pack status after a long period of storage. With the help of this charge balance management, an accurate remaining battery life display can be realized on the transmitters (transferred via pilot tone to the SR 4000 receiver). All necessary battery pack data will be stored in the internal RAM or EPROMmemory of the pack. All predetermined and initial parameters are stored in EPROMmemory of the battery pack to perform a correct recovery cycle. The battery pack also features an internal temperature surveillance circuit that adjusts the charging current of the CU4000 to protect the device in case of low or high temperature during loading. To reduce the so-called memory effect which leads to decreasing battery capacity, the communication between the BP 4000 and the CU 4000 is able to calculate if the batteries need a recovery cycle by the help of the stored date in the BP 4000. In this case, the CU 4000 draws the users attention to this possible problem and suggests starting a recovery cycle. The user can activate the recovery cycle via a recovery button on the CU 4000s front panel. The recovery cycle refreshes the battery pack by charging and discharging cycles to determine the actual capacity and initialize the capacity counter for accurate use time calculation. Other controls include a 3-step LED display showing the charging status. A lockable DC connector on the rear panel of the CU allows the unit to be powered by either an external DC adapter or by the optional PSU 4000 central power supply. Due to the sophisticated charging system, the battery pack can power the HT 4000 and PT 4000 for up to 12 hours with one full charging cycle, plus its gentle charging function will ensure up to 1,000 charging cycles.

Features Intelligent battery supply system comprising CU 4000 charger and BP 4000 battery pack Microprocessor controlled charge/ discharge monitoring function One-hour quick charging and Battery Recovery Management Charging compartment allows battery pack to be charged inside the transmitter
Charging current: 1.5 A Operating voltage: 12 VDC, 1.3 A Charging time: 1 hour typical Recovery cycle: approx. 8 hours Dimensions: 3.6 x 6.8 x 3.3 in. (92 x 173 x 85 mm) Weight: approx. 20.5 oz. (580 g) Standard accessories: BP 4000 battery pack, power supply

3.3 inch (85 mm)

6.8 inch (173 mm)
Several chargers can be mounted in a rugged flightcase as a compact, roadproof solution for large systems.

2,2 inch (57,5 mm)

AKG Acoustics GmbH Lembckgasse 2125, 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, U.S. 914 Airpark Center Drive, Nashville, TN 37217, U.S.A., Tel.: +1-615-620-3800, Fax: +1-615-520-3875, www.akgusa.com, e-mail: akgusa@harman.com For detailed information on WMS 4000 and other products from AKG contact your dealer or visit www.akg.com Specifications subject to change without notice. 02/04/Proa-Nr. 1453

1,2 inch (30,2 mm)

0,7 inch (18 mm)

3.6 inch (92 mm)

a) Hardware The SR 4000 UHF receiver is one standard EIA rack unit high and one-half rack unit wide with a full metal chassis. Thus, two receivers can be placed side-by-side in one rack space (rack-mount hardware included). The SR 4000 has a 30 MHz wide UHF band containing presets with intermodulation-free frequencies as well as a tuning mode with access to up to 1,200 switchable frequencies. The SR 4000 utilizes operates as a true diversity receiver, in which two completely separate antenna, receiver and demodulator sections are operational at all times. The receiver includes a Pilot Tone Decoder Unit that decodes transmitter data out of the Pilot Tone's data stream. This enables the SR 4000 to show battery charge status and mute status of the transmitter on the integrated, back-lit color display. This data is also available at the Logic Output Connector on the rear panel. The HT4000 & PT4000s Pilot Tone allows automatic muting of the SRs audio output in case of invalid or corrupted signal (Tone Code Squelch TCSQ). If necessary this automatic squelch option can be overruled by a manual squelch setting. For PC control and monitoring of the SR unit a special data port is available on the rear panel of the SR 4000. The True Diversity receiver concept offers maximum dynamic range, greater freedom from interference and noiseless switching from one receiver to the other. Both balanced 3-pin XLR and unbalanced 1/4-inch output connectors are available. An output level switch allows the adjustment of 3 output levels (-30, 0, +6 dB) for optimum system gain structure. Also available on the rear panel are a data port connector, a logic output, 2 x BNC antenna Connectors and a lockable DC input jack. Controls on the SR 4000 include a backlit display and a Jog wheel to adjust various receiver settings such as squelch threshold, carrier frequency selection, user's name, scan & rehearsal mode selection and many more. Indicators on the unit include mute, audio level bargraph, RF level bargraph, 6x14 segment alphanumeric display and menu control. A unique, programmable Status Control Ring shows the most important system data at one glance. Each SR 4000 can accommodate a pair of diversity antennas; however, when a number of receivers are used in a single system, a master antenna pair (with or without antenna booster, directional and omnidirectional antennas) can be used to feed all receivers. A wide range of accessories such as an antenna splitter, antenna combiner and antenna booster are provided for operational flexibility and ease of installation. b) Software The internal software of the SR 4000 offers a wide range of control features for an easy setup even in complex multichannel systems under difficult rf conditions. Most helpful are features like AutoSetup (automatic intermodulation free channel selection), EnvironmentScan (scanning of the unit's RF range), and RehearsalMode (recording of important system data during rehearsal helps optimize the system setup). Important settings like frequency, squelch, unit name, etc. can be edited and stored via an easy menu structure. Even more control & monitoring features are available via the optional MCS 4000 (MissionControl Software) PC Control Software.

Features Wideband true-diversity frequencyagile UHF receiver with 1,200 channels and all-metal chassis Factory-selected, pre-matched frequency groups for quick system setup Backlit color LCD allows easy monitoring of operating parameters at a glance Jog wheel control allows quick, easy parameter adjustments AutoSetup, EnvironmentScan and Rehearsal Modes for quick, easy system setup Bodypack and handheld transmitters available with a wide selection of AKG microphones Up to 24 intermodulation-free frequencies per frequency group Wide range of optional accessories available for system customization

AutoSetup

RehearsalMode

EnvironmentScan

Battery Status / TX Mute

SR 4000 Receiver

RF Carrier Frequency Ranges: 650 680, 680 710, 720 750, 760 790, 790 820, 835 - 863 MHz Carrier Frequencies: up to 1,200 per range (dependent on local conditions) Modulation Method: FM Rated Deviation: 20 kHz at 1 kHz (sine wave) Squelch Threshold: Adjustable between -70 and -100 dBm Audio Bandwidth: 3520,000 Hz THD at 1 kHz: < 0.3% at rated deviation Signal-to-noise: typ. 120 dBA Audio Output: Balanced 3-pin XLR-M, switchable from -30 to +6 dB; unbalanced 6.5 mm (1/4-in.) jack Current Consumption: 150 mA typical Power Requirement: 11 to 15 V dc or ac from external power supply Size: 7.8 x 7.4 x 1.7 in. (200 x 190 x 44 mm) Net Weight: 34 oz. (972 g)

0.7 inch (18 mm)

The wireless receiver shall operate over a 30 MHz UHF frequency range in one of 6 bands from 680 MHz to 863 MHz, with a wide range of possible frequency settings. The wireless microphone system shall incorporate factory-optimized sets of both sending and receiving frequency modules that are built into both transmitters and receivers. Each frequency set shall comprise a 30 MHz UHF band and offer up to 1,200 discrete operating frequencies within that band. The receiver shall operate on the true diversity principle, and the switching circuit shall be inaudible. Total harmonic distortion at 1 kHz for rated deviation shall be no greater than 0.3%. The receiver shall provide for a manual squelch adjustment as well as an automatic squelch option (tone code squelch) for optimum system operation. Audio output shall include a balanced XLR connector as well as an unbalanced 6.3 mm / 1/4-inch jack connectors. The output from the 3-pin XLR-type connector shall be adjustable in 3 steps (-30, 0, +6 dB). A data port for connecting a pccontrolled network and logic out connector shall be provided. The receiver shall be controlled by a jog wheel and shall provide a backlit color display as well as a programmable LED ring (red/green) showing the overall system status. The wireless receiver shall be the AKG Acoustics Model SR 4000.

7.8 inch (200 mm) 1.7 inch (44 mm)

7.4 inch (190 mm)

WMS 4000 Antenna System Components
The AKG Model WMS 4000 is an extremely flexible and sophisticated wireless microphone system for multi-user, multi-channel applications. A wide range of accessories is available to customize the system to meet your specific needs and deliver tremendous operational flexibility and ease of installation. In the following, all the available components for setup of a sophisticated antenna distribution scheme for multi-channel systems are described: a) PS 4000 Multi-Coupler The PS 4000 multi-coupler combines an antenna splitter and dc power distribution in a chassis that is one EIA standard rack unit high and one-half rack unit wide in a full metal housing. Thus, two multi-coupler units can be placed side by side (Rack Mount hardware kit included) or one PS 4000 side-by-side with e.g. an SR 4000 receiver unit. The PS 4000 has a wide-band antenna signal amplifier/divider with a 220 MHzwide UHF bandwidth, making it suitable for all available WMS 4000 channels. The multi-coupler provides 2 BNC antenna inputs. The incoming diversity signal is internally amplified and divided to 4 pairs of diversity outputs, thus the splitter provides 2 x 4 BNC antenna output connectors. 2 additional BNC outputs are available on the rear panel for cascading the diversity antenna signal to another multi-coupler. Up to 3 multicouplers can be cascaded to supply antenna signal to 12 receivers from a single pair of antennas. The PS 4000 offers the following displays: one blue LED indicator for each antenna input showing that the connected cables, signal amplifier and antennas are fully operational. A red LED indicator will indicate a failure of one of the components prior to the PS 4000. A 10-position switch for compensation of the connected cable length is available on the front panel to optimize the systems performance. On the rear panel of the PS 4000, a DC input can be hooked to either a single DC adapter or to the optional central power supply unit, which can be connected to power the antenna splitter and the connected receivers and antennas remotely via the antenna cables.
Features High quality RF components to build up extremely flexible and sophisticated antenna networks with large antenna cable lengths. . and to build up distributed antenna networks for room sharing applications Cascadeable, modular Antenna splitter PS 4000 Ultra linear Antenna Booster AB 4000 in waterproof housing High efficient passive and active directional antennas SRA 1 & SRA 2B Discreet omnidirectional booster antenna RA 4000 B for in & outdoor use Wide range of useful accessories

b) AB 4000 Antenna Amplifier The AB 4000 is an in-line antenna signal amplifier used to compensate for the signal loss from cable attenuation in large antenna networks. The amplifier comes with an ultra -linear rf amplifier circuit that offers up to 17 dB of amplification and can be remotely powered by the PS 4000 or by an external AC adapter. Therefore it can be used with up to 90 m (297 ft) of RG58 cable or 220 m (726 ft) of RG213 cable. In total, 2 AB 4000s can be cascaded in series without increasing the noise of the wireless microphone system. To optimize the systems performance, the AB 4000 comes with a 10-position switch for compensation of the connected cable length. The antenna booster also is equipped with 2 BNC connectors and 1 power indicator LED. The splitter comes in a waterproof metal housing and therefore is even suitable for use outdoors. c) RA 4000 B Amplified Antenna The RA 4000B is an active omnidirectional antenna. Specially designed for the WMS 4000 wireless microphone system, it comes with a specially-tuned wideband UHF amplifier, perfectly matched to all WMS 4000 channels. The integrated ultra linear rf amplifier circuit can be remotely powered by the PS 4000 antenna splitter and offers approximately 17 dB of amplification to compensate for the cable attenuation of up to 40 m (132 ft) of RG58 cable or 100 m (330 ft) of RG213 cable. If necessary, the SRA 2 can also be cascaded with the optional AB 4000 antenna amplifier to compensate for even more antenna cable length. The antenna provides a BNC connector for connecting a BNC antenna cable. d) SRA 1 Passive Directional Antenna The SRA1 is a passive UHF antenna with a hypercardioid polar pattern. The specific design of the antenna provides maximum on-axis gain of approximately 6 dB, which is equivalent to increasing the transmitters radiated power by four times. The antenna provides a BNC connector for connecting an antenna cable. e) SRA 2B Active Directional Antenna The SRA 2B is an active directional panel antenna. Specially designed for the WMS 4000 wireless microphone system, the SRA 2B comes with custom-tuned wideband UHF tuning, suitable for all WMS 4000 channels. The directional polar pattern offers approximately 70 of pickup with an on-axis amplification factor of approximately 6 dB. The SRA 2B can typically overcome distances of up to 200m (660 ft) on-axis, line-of-sight. The integrated ultra-linear rf amplifier circuit could be powered by the PS 4000 multi-coupler and offers amplification of approx. 17 dB to compensate for cable attenuation of up to 40 m (132 ft) of RG58 cable or 100 m (330 ft) of RG213 cable. If necessary, the SRA 2B can be cascaded with the optional AB 4000 antenna amplifier for compensation of even greater antenna cable length. The antenna input utilizes BNC connectors for connecting the antenna cable. On request the SRA 2B can be equipped with an optional laser positioning system to optimize the antenna placement & positioning. f) ASU 4000 Antenna Supply Unit The ASU 4000 is an in-line power supply unit for use in large antenna networks to feed 12 V DC into an antenna line. With the help of the ASU 4000, all connected AKG antenna network components such as the AB 4000, SRA 2B and RA 4000B can be remotely powered even if there is no power coming from the connected PS4000 multi-coupler (e.g. in distributed antenna networks using standard antenna combiners see also in Fig. 3 & 4). The ASU 4000 is equipped with 2 BNC connectors, 1 power indicator LED as well as a DC input for connection of the AC adapter. The ASU 4000 is built into a waterproof metal housing and therefore is suitable for outdoor use.

PS 4000 Multi-Coupler

Type: 2 x 1 to 4 SR4000 + 2 x 1 PS (Cascade) Carrier frequency range: 650 to 870 MHz Cable attenuation compensation: +2, 0 , -2, -4, -6, -8 dB, selectable RF inputs: 2 BNC sockets, 50 ohms RF outputs: 10 BNC sockets, 50 ohms Operating voltage: 10 VDC Dimensions: 7.8 x 7.4 x 1.7 in. (200 x 190 x 44 mm) Weight: 2.2 lbs. (970 g) Standard accessories: power supply, RMU 4000 rack mounting kit Optional accessories: MK PS connecting cable

7.8 inch (200 mm)

RA 4000 B Omni Booster Antenna
Carrier frequency range: 650 to 870 MHz Gain: 17 dB RF input: 1 BNC socket, 50 ohms RF output: 1 BNC socket, 50 ohms Operating voltage: 8 VDC from PS 4000 or ASU 4000 via connecting cable Dimensions: 4.3 x 1.4 in. (110 x 35 mm) Weight: 3.5 oz. (100 g)
1.7 inch (44 mm) 1.4 inch (35 mm) 4.3 inch (100 mm)
SRA 1 Directional Antenna (passive)
Carrier frequency range: 658 to 945 MHz Gain: 6 dB Coverage angle: 70 Front-to-back ratio (180): 13 dB min. Off-axis attenuation (90 to 110): 25 dB Dimensions: diameter: 5.98 in. (152 mm); depth: 2.5 in. (65 mm) Weight: 6.4 oz. (180g)

5.98 inch (152 mm)

2.5 inch (65 mm)

9 inch (230 mm)

SRA 2B Active Directional Antenna
Carrier frequency range: 650 to 870 MHz Antenna gain: 6 dB Coverage angle: 70 Booster gain: 17 dB Dimensions: 9 x 9.4 x 1 in. (230 x 240 x 26 mm) Weight: 8.8 oz. (250 g)

1 inch (26 mm)

AB 4000 Antenna Amplifier
Carrier frequency range: 650 to 870 MHz Gain: 17 dB RF input: 1 BNC or N-socket, 50 ohms RF output: 1 BNC or N-socket, 50 ohms Operating voltage: 8 VDC from PS 4000 or ASU 4000 via connecting cable Dimensions: 3.1 x 2 x 2 in. (78 x 50 x 50 mm) Weight: 5.3 oz. (150 g)
9.4 inch (240 mm) 2 inch (50 mm) 2.04 inch (52 mm) 3.1 inch (78 mm) 2 inch (50 mm) 2 inch (50 mm) 2.04 inch (52 mm) 3.1 inch (78 mm)
ASU 4000 Antenna Supply Unit
Carrier frequency range: 650 to 870 MHz RF input: 1 BNC or N socket, 50 ohms RF output: 1 BNC or N socket, 50 ohms Operating voltage: 12 VDC Dimensions: 3.1 x 2 x 2 in. (78 x 50 x 50 mm) Weight: 5.3 oz. (150 g)

AKG WMS PRACTICAL EXAMPLES
Power cable Antenna cable A Antenna cable B

2 x RA 4000 B

Antenna booster

Room 2

Antenna booster Antenna booster

Room 3

Antenna booster ZAPD 21

ZAPD 21

Room 1

Room 4

PSU 4000

CU 4000

8 x SR 4000

2 x PS 4000

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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. Wireless systems in particular require meticulous performance tests to be carried out both regarding RF and audio signals before they are connected to the FOH mixer. The advanced software of the SR 4000 receiver makes all this easy. Rehearsal Mode, Auto Setup, and Frequency Scan are just a few of the features that help set up all the RF In the example shown above, a complete connections quickly and eficiently. 10-channel wireless system including antenna splitters, power supply unit and headphone However, the ultimate quality of the audio sig- amplifiers can be fitted into a compact 8 U nal delivered by the receiver can only be tested rack. You can also fit two small flight cases with by connecting the receiver to the mixer, which five charging units each for the transmitters, so is practically impossible once the show has star- that all transmitters can be charged completely and simultaneously within just one hour. ted. Two HPA 4000 headphone amplifiers, each connected to five receivers, eliminate this problem, enabling you to check audio signal quality quickly and reliably without an additional mixer. And, the complete tour sound package takes up so little space that it can be transported in a standard station wagon the ideal solution for touring bands.
Tour Sound The WMS 4000 is specifically suited for small tour setups, since the large variety of selectable channels allows you to find a working setup for practically any application. For example, a complete 4-channel system can be fitted into a flight case measuring only 6 U high (see below). Thanks to the integrated PSU 4000 power supply unit and the PS 4000 antenna splitter with two front antennas, all you need to do is connect a single power cable! All other components, such as the transmitters, can be stored in a 2 U drawer.
Specification: Amount 10 x Item SR 4000 Description True diversity receiver

HT/PT 4000

Handheld or portable transmitter

Charging unit

Central power supply

PS 4000

Antenna splitter

HPA 4000

Headphone amplifier

SRA 2B

Active wideband directional antenna
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. Key prerequisites are minimum space requirements, quick cabling and clearly arranged controls. mitters and receivers, it comprises antenna splitters and power supply units, thus minimizing the necessary amount of antenna, power and DC cables. rack. Just two antenna cables and two power cables were connected to the rack. By comparison, the IVM 1 In-ear Monitor System also installed in the rack, with just two channels, needed the same amount of feeders as Especially the amount of power feeder cables a 16 (or 20) channel wireless system. was substantially reduced, since four antenna splitters, 16 receivers and active anten- Apart from the convenient and space-saving nas, as well as one spare antenna splitter and arrangement, this setup helped to achieve a four spare receivers, were powered by only pleasant side effect as it substantially two PSU 4000 power supply units. reduced hum from power cables.

Our example is a mobile 16-channel system By daisy-chaining the antenna splitters, all for a musical performance. Apart from trans- antenna cable runs were kept within the
The Vienna Konzerthaus Along with the Vienna State Opera and the Golden Musikvereinssaal (concert hall), the Vienna Konzerthaus is one of the most famous venues in Vienna. The Vienna Konzerthaus increasingly stages non-classical performances, such as musicals or rock concerts. Its many years of cooperation with AKG have resulted in optimum sound for widely differing requirements.
Specification: Amount 16 x Item SR 4000 Description True diversity receiver

RA 4000 B

Omnidirectional wideband booster antenna

AB 4000

Antenna combiner
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.
Gala Musical Couples, August 2003 This performance was scheduled at short notice and therefore needed a high-performance mobile wireless system. The AKG WMS 4000 was the obvious answer. The detailed system layout is shown on the following pages.
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. Structural issues pose much greater difficulties: as a rule, opera houses are historic buildings subject to strict conditions with regard to constructional alterations. And the numerous backstage rooms, such as dressing rooms, maintenance passages etc. are an environment that is rather hositle to RF propagation. Above all, however, there is one feature typical of many opera houses: the so-called iron curtain that separates the stage and auditorium. A massive metal wall, it completely blocks radio signals when lowered. In our case, we needed a 46-channel system centrally controlled from the control room. The stage was approx. 70 m (230 ft) away from the control room and had to be covered with the minimum possible number of antennas. Besides, the transmitters in the dressing room had to be operational, so that the correct functioning and level settings could be tested prior to showtime. The system uses two passive directional antennas placed close to the control room to cover the stage. Antenna combiners connect two omnidirectional booster antennas in the dressing room, which receive the radio signals from behind the stage. This ensures perfect transmission and monitoring of all transmitters even during intermissions, when the iron curtain is lowered.

High-tech for pure enjoyment Every opera or theater audience has a right to enjoy exceptional artistic performances and excellent sound. Therefore, microphones and wireless components must not only work perfectly but be more or less invisible in order not to disrupt the visual appeal of the stage set and performers. The compact WMS 4000 and AKG MicroMics provide the ideal combination for this type of application.
Specification: Amount 46 x Item SR 4000 Description True diversity receiver
Central power supply unit

Booster antenna

Dressing room

Safety curtain

Sound Cabin

Antenna cable

Antenna cable A Antenna cable B

4 x SR 4000

4 x SR 4000 PS 4000
4 x SR 4000 PS 4000 PS 4000

2 x SR 4000

22 channels

76 www.akg.com

24 channels

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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. Specific architectural conditions do not call for cutting-edge technology but rather for ingenious antenna positioning and the availability of small and helpful additional components required for a well-conceived system. In this example, we needed a single-channel wireless system for a three-story reinforcedconcrete building with an L- shaped plan. The task sounds simple: the transmitter must deliver a signal from any place on each floor. The only wqay to solve this problem is to use long antenna cable runs and booster antennas. The latter are simply suspended from the ceiling at the junction between the two wings of the L-shaped plan. It is essential to pay attention to the layout and the distances between the antennas. Antenna combiners connect the antenna cables from each floor to the receiver. However, the cable runs to the last floor are too long for the receiver to supply enough power to the booster antennas. This problem can be solved by inserting an ASU 4000 remote feeding adapter and power supply into each antenna cable. The ASU 4000 is available with AC power supplies for a variety of AC voltages. A simple, inconspicuous and cost efficient solution that minimizes the number of required components.
ASU 4000 Remote Power Supply compensates for power drain of long antenna cables The ASU 4000 is a small but ingenious accessory for extremely long antenna cable runs. It comes with a power supply for one of four AC voltage ranges that allos the device to used in virtually every country. The compact dimensions and the rugged, splash-proof metal case make it the first choice for open-air applications.

Specification: Amount 1x Item SR 4000 Description True diversity receiver
Hendheld or portable transmitter

ASU 4000

Remote powerd adapter for antennas