Sender ist nicht an das Stromnetz angeschlossen. 1. Akkus sind nicht richtig im Kopfhrer eingelegt. 2. Kopfhrer liegt nicht richtig auf dem Sender auf. 3. Angeschlossenes Audio-/Video-, TV-Gert, PC oder Notebook ist auf mono geschaltet. Sender ist nicht richtig an Audio-/Video-, TVGert, PC oder Notebook angeschlossen. Sende- und Empfangsfrequenz stimmen nicht berein. 1. 2.

Starkes Rauschen

2. 3. 4. 5.
Audio-Eingangspegel am Sender ist zu niedrig Eingangssignal ist verrauscht. Akkus sind leer. Senderposition.

Verzerrter Ton

Audio-Eingangspegel am Sender ist zu hoch. Sender und Kopfhrer nicht genau aufeinander eingestellt. Akkus sind leer.

1 Introduction

Dear customer: Thank you for purchasing an AKG product. The K 306/K 406/K 506 AFC wireless headphone system is based on advanced UHF transmission technology. In order to make optimum use of the benefits of your K 306/ K 406/K 506 AFC, please take a few minutes to read the instructions below carefully before operating the equipment. Please keep the manual for future reference.
4 Unpacking and Optional Accessories
4.1 Unpacking Your headphones system package contains the following components: K 306 AFC, K 406 AFC, or K 506 headphones

2 Description

The K 306/K 406/K 506 AFC headphone system uses state-of-the-art UHF radio transmission technology; features an Autotuning function that automatically tunes the headphones to the transmitter frequency for optimum reception; connects to any audio, video, TV set, PC, or notebook computer with a headphones, line, or recording output; provides perfect sound reproduction, full mobility, and signal transmission through walls and ceilings over a distance of up to 330 feet (100 m) under ideal transmision conditions (free field). To share your listening enjoyment with other persons, you can operate your transmitter with several headphones simultaneously. K 306/K 406/K 506 AFC headphones are available separately.
T 306 AFC, T 406 ATFC, or T 506 AFC transmitter
Connecting cable with stereo mini jack plug and L/R RCA plugs for connecting the transmitter to your audio source

Stereo mini jack to 1/4 adapter jack
AC adapter for powering the transmitter (9 V DC, 500 mA)

3 Precautions

1. Operate the headphones with two AAA size 1.2 V rechargeable (supplied) or 1.5 V dry batteries only. 2. Never try to charge dry batteries using the transmitters charging feature. 3. Before charging the headphones batteries, always make sure that the batteries in the headphones are rechargeable types. 4. Dispose of spent dry or rechargeable batteries conforming to local waste disposal rules. Never throw batteries into fire. 5. Operate the transmitter with the supplied 9 VDC, 500 mA AC adapter only. Check that the AC voltage stated on the AC adapter is the same as that available in your country. Using the transmitter with a different AC adapter voids the warranty. 6. Always switch the headphones OFF after use. 7. Never try to open the headphone or transmitter case. Refer servicing to qualified service personnel only. 8. Never place the equipment near heat sources such as radiators or electric heaters or expose it to direct sunlight, excessive dust, humidity, rain, temperatures below freezing, or impacts. 9. Never use alcohol, petroleum-based cleaners, or paint thinners to clean the headphones or transmitter. 10. If you do not use your headphones system for an extended period of time (e.g., when traveling), disconnect the AC adapter from the AC outlet. 11. Also refer to section 7 Important Notes. Two 1.2 V AAA size recharge-able batteries: NiMh, 600 mAh (K 406 AFC, K 506 AFC) or NiCd, 300 mAh (K 306 AFC) for powering the headphones (inside the headphones) If anything is missing, contact your AKG dealer immediately. 4.2 Optional Accessories External charger (6 V DC, 100 mA) for supplied or optional headphones (refer to fig. 12). Version EU standard (except UK) UK standard US standard Headphones K 306 AFC K 406 AFC K 506 AFC Order 6000 Order 6000 Number H 1002 H 1003 H 1004 Number X 1054 X 1055 X 1061

5 Controls

5.1 Headphones (Fig. 1) 1. POWER switch: switches power to the headphones On and OFF. 2. Status LED: illuminates green to indicate power to the headphones is ON, and red to indicates the batteries inside the headphones are being charged. 3a Charging contacts 3b Charging jack for optional external charger 4. Battery compartment (beneath the detachable ear pad) 5. AUTOTUNING switch: activates the automatic tuning function 6. VOLUME control

5.2 Transmitter (Fig. 2) 7. 8. 9. 10. 11. AUDIO IN L/R, : audio input sockets DC 9 V: DC input jack for AC adapter FREQ: frequency selector Charging contacts POWER ON/CHARGE: tri-color LED indicating charging and operating modes 1.
batteries conforming to local waste disposal rules. Referring to fig. 12, place the headphones on the transmitter such that the charging contacts (3) on the bottom of the left-hand earphone will rest on the charging contacts (10) on the transmitter. The POWER ON/CHARGE LED (11) on the transmitter will light red to indicate that the batteries in the headphones are being charged. If signal is present at the transmitter audio input, the POWER ON/CHARGE-LED (11) will light orange. If the POWER ON/CHARGE LED (11) fails to illuminate, rotate the headphones to the point that the charging contacts (3) will rest on the charging contacts (10) on the transmitter. The batteries will be fully charged after approximately 7 hours. (The POWER ON/CHARGE LED (11) will continue lighting red.). You may leave the headphones on the transmitter for as long as you like without risking to overcharge the batteries.

6 Operating Notes

6.1 Connecting the Transmitter to AC Power 1. 2. Connect the cable on the supplied AC adapter to the DC 9 V jack (8) on the transmitter rear panel as shown in fig. 3. Check that the AC voltage stated on the AC adapter is the same as that available in your country. If it is, connect the AC adapter to a convenient AC outlet (see fig. 4). The transmitter will automatically be ready to operate. Note that the transmitter will switch on as soon as it detects an audio signal at the AUDIO IN jacks or the jack.
6.2 Connecting the Transmitter to Your Audio Source You may connect the transmitter to a headphones output (mini jack or 1/4 jack), LINE, or REC outputs. 6.2.1 Connecting to a Headphones Output 1. Before connecting the transmitter to your audio source, switch the audio source OFF. 2. Referring to fig. 5, plug the red RCA connector (right channel) on the supplied connecting cable into the red AUDIO IN R socket (7) and the white RCA connector (left channel) into the white AUDIO IN L socket (7) on the transmitter rear panel. 3. Connect the stereo mini jack plug on the connecting cable to the headphones output of your audio source (fig. 6/7). 4. If the headphones output on your equipment is a 1/4 jack, plug the supplied mini jack to 1/4 adapter jack onto the connecting cable. Connect the adapter jack to the headphones output. 6.2.2 Connecting to a LINE or REC Output 1. Before connecting the transmitter to your audio source, switch the audio source OFF. 2. Referring to fig. 6/7, plug the red RCA connector (right channel) on the supplied connecting cable into the red LINE OUT R or REC OUT R socket and the white RCA connector (left channel) into the white LINE OUT L or REC OUT L socket on your audio source. 3. Connect the stereo mini jack plug on the connecting cable to the jack (7) on the transmitter rear panel (see fig. 8). 6.3 Charging the Batteries in the Headphones In order to ensure the longest possible service life for the rechargeable batteries, we deliver them uncharged, inside the headphones. Therefore, you will need to charge the supplied batteries before first operating your headphones system. Before charging, pull the protective foil away from the earphone in a straight movement. WARNING: If you operate the headphones on dry batteries (see section 6.4), never try to charge the batteries using the transmitters charging feature. This would cause serious damage to your headphone system. Dispose of spent

Important: In order to maintain full battery capacity for as long as possible, discharge the batteries completely about once a month: Switch the headphones on and leave them outside the transmitter until the status LED (2) extinguishes. Recharge the batteries as described above. 6.3.1 Optional External Charger Alternatively, you use can the optional external charger to charge the batteries as shown in fig. 12. The batteries will be fully charged within approximately 7 hours. 1. Plug the charger cable into the charging jack (3b) on the headphones. 2. Plug the charger into a convenient power outlet. The status LED (2) on the headphones will illuminate red to indicate that the batteries are being charged. Note: You can use the K 306 AFC and K 406 AFC headphones even while charging batteries. 6.4 Replacing Batteries The capacity of any rechargeable battery will decrease over time. If you feel that you need to recharge the supplied batteries more often than would be convenient, you may consider replacing the batteries with new AAA size 1.2 V rechargeable or 1.5 V alkaline dry batteries. 1. 2. 3. 4. Remove the ear pad from the left-hand earphone as shown in fig. 9. Remove the old batteries. Referring to fig. 10, insert the new batteries into the battery compartment (4). Make sure to align the batteries with the polarity marks inside the battery compartment. Replace the ear pad on the earphone and rotate the ear pad CW to the point that the ear pad will click into place.
6.5 Setting Up the System Remove the headphones from the transmitter. Switch ON the audio source to which the transmitter is connected. If audio signal is present at the transmitter input, the POWER ON/CHARGE LED (11) on the transmitter will light green. Note: If no signal arrives at the transmitter input for approx. 3 minutes, the transmitter will automatically switch off and the POWER ON/CHARGE LED (11 will extinguish. 3. Set the FREQ selector (9) on the transmitter to its center position. 4. Use the POWER switch (1) to switch the headphones on, so that the status LED (2) will illuminate green. Press the AUTOTUNING switch (5) on the headphones. 7 1. 2.
The Autotuning function will automatically tune the reception frequency to the carrier frequency set on the transmitter. After a few seconds, you should hear the signal in the headphones clearly and free of interference. If your first try fails, set the FREQ selector (9) on the transmitter to a different position and press AUTOTUNING (5) again. FREQ (9) lets you select one of three different carrier frequenices. 5. Set the VOLUME control (6) on the headphones to the desired volume level. Note: If the transmitter signal is disturbed, e.g., by reflections (multipath reception) or shadow effects, the headphones will automatically mute. This function eliminates interference related noise. 6.6 POWER ON/CHARGE LED Status If LED is. lighting green: Transmitter. is connected to AC power and audio source and receives signal. Headphones are not on the transmitter, charging function is off. is connected to AC and audio source and receives signal. Headphones are on the transmitter, charging function is on. has detected no signal for several minutes, headphones are on the transmitter, charging function is on. has detected no signal for several minutes, headphones are not on the transmitter, charging function is off, OR is not connected to AC power.

8 Specifications

System Performance Modulation: FM Carrier frequency band: 864 MHz (LPD band) Selectable carrier frequencies: FREQ 1: 863.5 MHz FREQ 2: 864.0 MHz FREQ 3: 864.5 MHz T 306 AFC/T 406 AFC/T 506 AFC Transmitter Power supply: 9 VDC, 500 mA Radiation angle: approx. 360 Max. radiated power: 10 mW ERP (Equivalent Radiated Power) Max. range (free field*): approx. 330 ft. (100 m) Weight (T 306/406 AFC): approx. 9.7 oz. (275 g) (T 506 AFC): approx. 11.1 oz. (315 g) K 306 AFC/K 406 AFC Headphones Distortion: <1% Type: semi-open dynamic headphones Weight: approx. 6.3 oz. (180 g) K 306 AFC Headphones Power supply: 3 VDC (2 x 1.2 V, 300 mAh AAA size NiCd rechargeable batteries supplied) Battery life: approx. 10 hours (NiCd rechargeable batteries) Frequency range: 20 Hz to 22,000 Hz Max. SPL: ~103 dB SPL K 406 AFC Headphones Power supply: 3 VDC (2 x 1.2 V, 600 mAh AAA size NiMh rechargeable batteries supplied) Battery life: approx. 20 hours (NiMh rechargeable batteries) Frequency range: 20 Hz to 24,000 Hz Max. SPL: ~105 dB SPL K 506 AFC Headphones Power supply: 3 VDC (2 x 1.2 V, 600 mAh AAA size NiMh rechargeable batteries supplied) Battery life: approx. 20 hours (NiMh rechargeable batteries) Frequency range: 18 Hz to 24,000 Hz Max. SPL: ~107 dB SPL Distortion: <1% Type: semi-open dynamic headphones Weight: approx. 11.3 oz. (320 g) * under ideal transmission conditions

lighting orange:

lighting red: dark:

7 Important Notes

1. Operating switches on or connecting the transmitter to your audio source may cause clicks which at high volume settings may affect your hearing. Therefore, be sure to set the VOLUME control on the headphones to minimum before switching between different sources (tuner, turntable, CD player, etc.) or connecting the transmitter. Listening over headphones at high volume levels, particularly over extended periods of time, may damage your hearing. Your K 306/K 406/K 506 AFC is a radio frequency device that conforms to the strict European standards. For physical reasons that have nothing to do with the quality of the product, extremely strong interference sources may affect reception. In order to maintain interference-free listening pleasure, do not operate your K 306/K 406/K 506 AFC in the close vicinity of radio equipment, cellular telephones, or directly above TV or computer monitor picture tubes (see fig. 11). The supplied connecting cable is long enough to allow the transmitter to be placed at a safe distance from interference sources. Interference caused by other users of the 864 MHz LPD band are beyond AKGs control.

9 Troubleshooting

Symptom No sound. 1. 2. 3. 4. 5. 6. 7. POWER ON/ CHARGE LED does not light. 1. 2. 3. Mono sound on headphones. 1. 2. Loud noise. 1. Possible Cause AC adapter is not connected to transmitter and/or AC outlet. Transmitter is not connected to audio source. Connected audio source is switched off. Volume control on audio source is at zero. Batteries are low. Headphones are switched off. VOLUME control on headphones is at zero. Transmitter is not connected to AC power. Batteries are not correctly aligned with polarity marks. Headphones are incorrectly positioned on transmitter. Connected audio source operates in mono mode. Transmitter is not correctly connected to audio source. Transmitter and receiving frequencies are not identical. Audio level at transmitter input is too low. Input signal is noisy. Batteries are dead. Transmitter position. Audio level at transmitter input is too high. Transmitter and headphones carrier frequencies do not match. Batteries are dead. 1. 2. 3. 4. 5. 6. 7. 1. 2. 3. 1. 2. 1. Remedy Connect AC adapter to transmitter and/or AC outlet. Connect transmitter to audio source. Switch audio source on to feed signal to transmitter input. Set audio source volume to desired level. Charge batteries. Switch headphones on. Set VOLUME control to desired level. Connect transmitter to AC power. Check orientation of batteries in battery compartment. Place headphones on transmitter correctly. Switch audio source to stereo mode. Check cable connection between transmitter and audio source. Press AUTOTUNING switch on headphones or use FREQ selector to select different carrier frequency and press AUTOTUNING on headphones. Increase audio source volume. Check audio source. Charge batteries. Relocate transmitter (refer to fig. 11). Decrease audio source volume. Use FREQ selector on transmitter to select different carrier frequency and press AUTOTUNING switch on headphones. Charge batteries.

For other products and distributors worldwide see our website: www.akg.com 09/02

TABLE OF CONTENTS

Surround
FOR TV, HOME THEATER, HI-FI FOR HI-FI PURISTS PREMIUM AUDIO SOFTWARE

Pages 6-15

hearo 777

QUADRA DELUXE

hearo 888 DIGITAL

hearo 999

AUDIOSPHERE II

hearo player N E W

Wireless

BASIC DESIGNER SYSTEMS

Pages 16-19

k 311 ir

k 105 uhf

k 306 afc N E W

k 406 afc N E W

k 506 afc N E W

HARDWIRE WIRELESS

Pages 20-21

k 71 tv N E W

balance k 122 ir N E W

balance k 216 afc

STUDIO

Pages 22-25

k 171 studio N E W

PORTABLE

k 271 studio N E W

k 141 monitor

k 141 studio N E W

k 240 monitor

k 240 studio N E W

k 240 df studio monitor

ALLROUND

Pages 26-27

k 301 xtra

HIGH-END

Pages 28-29

k 1000

Specifications

Pages 30-31

AKG New Line

THE HEARO FAMILY

hearo 777 QUADRA DELUXE

Pages 8-9

Pages 10-11

hearo 999 AUDIOSPHERE II

Pages 12-13

Wireless eight-channel surround headphone system for TV, home theater, hi-fi use
Wireless eight-channel surround headphone system with digital radio link for use with high-end systems
Completely digital wireless headphone system with Dolby Digital decoder for audiophile individualists.
Patented IVA processing provides a natural, spatial sound through headphones. Integrated Dolby Surround Pro-Logic and LOGIC7 surround decoders. For TV/video/DVD/DVD(A)/Hi-fi/ (SA)CD/PC/game consoles. Selectable surround and stereo modes. Integrated Dolby Surround Pro-Logic and LOGIC7 surround decoders For TV/video/DVD/DVD(A)/Hi-fi/(SA) CD/PC/game consoles. Accepts analog and digital input formats. Selectable surround and stereo modes. Three selectable sound presets: Norm/Music/Movie. Memory card extension for loading personal ear matching curves. Digital radio link Minimum noise. Digital antenna diversity receiver minimizes signal dropouts. Integrated Dolby Surround Pro-Logic and Dolby Digital decoders For TV/video/DVD/DVD(A)/Hi-fi/ (SA)CD/PC/game consoles. Accepts analog and digital input formats. Selectable surround and stereo modes. Stereo mode provides three room simulations. Four selectable sound presets: Norm/Music/Movie/Voice. Six selectable ear matching curves. Digital radio link Minimum noise. Digital antenna diversity receiver and transmitter with external swiveling antenna minimize signal dropouts. High-end headphones Same performance as high-end hardwire headphones. XXL Varimotion speakers with computer optimized diaphragms for excellent response. Sparkling sound even at high loudness. Balance control for left/right volume adjustment. Quick-charging system (less than 2 hours).

Analog radio link Three-channel PLL UHF synthesizer tuner for reliable reception. AGC for automatic matching to audio source output level. Autotuning function. High quality headphones Varimotion XXL speakers for extremely accurate response. Sparkling sound even at high loudness.
High-end headphones Same performance as high-end hardwire headphones. XXL Varimotion speakers with computer optimized diaphragms for excellent response. Sparkling sound even at high loudness. Balance control for left/right volume adjustment. Quick-charging system (less than 2 hours).
Available from spring 2004

hearo player

Page 15
hearo 999 AUDIOSPHERE DIGITAL PROCESSOR
Headphone amplifier with D/A converter and room simulator Portable control room provides consistent monitor sound for tracking, mixing, and editing. For information visit www.akg.com
Software plug-in for Windows Media Player 9 Series for natural, spatial sound through headphones IVA processing and LOGIC7 surround decoder. Five selectable sound presets (Rock/Pop, Classical, Jazz, Movie, Norm). Automatic processing level adjustment to available computing power. Download your copy from: www.akg.com/hearoplayer
For technical explanations, see page 14.
HEARO STANDS FOR SURROUND.
How to upgrade your stereo* to surround without using loudspeakers or cables.
Experience fantastic theater surround sound at home with no extra loudspeakers. The wireless headphones of the HEARO Family turn any conventional stereo source into an advanced surround system.
All you need to do is connect the HEARO transmitter to your TV set, VCR, or DVD player. Of course, you can upgrade your hi-fi, PC, or game console as well. Each HEARO transmitter incorporates one or more surround decoders so youll need no extra
We will be happy to send you a separate, detailed HEARO Family folder: advertising@akg.com Or visit www.akg.com for more information.

equipment.

The HEARO PLAYER plug-in is a special goody for PC users. It has been developed for Windows Media Player, the standard audio player for Windows, and upgrades your stereo headphones to surround phones with no expensive peripherals or complicated modifications.

* Home theater

TV / DVD / VCR Hi-fi / (SA)CD / DVD(A) PC / game consoles

Press clippings

REVIEW 1/03

Price/performance:

Excellent

Best grade

Upper class
Price/performance: good to excellent 1/02

REVIEW

Going to the movies. Going to the movies now means cuddling up on your sofa and putting on your favorite DVD. All you need is a HEARO no extra decoder, no extra loudspeakers, no extra cables. Take some time to enjoy IVA processing. The sound wont seem to come from your headphones but from where the loudspeakers would normally sit. You will hear details youve never heard before. Now switch in one of the surround decoders. Select Dolby Surround Pro-Logic and experience the typical surround sound from four directions. Or enjoy the full eight channels of the LOGIC7 decoder from high-end audio equipment manufacturer LEXICON. You will feel as if you were at the movies. The XXL speakers with patented AKG Varimotion diaphragms provide powerful sound and ensure accurate reproduction even at high volume levels. This feature has made HEARO Family headphones very popular with hi-fi enthusiasts, too.

IVA LOGIC7 generates soundscapes with eight virtual sound sources from any mono or stereo program.

REVIEW 3/02

Lean back and enjoy Top class.
provided a full sound with fascinating 3-D effects
future-oriented and affordable alternative to loudspeaker systems

Ingenious.

Number 12/2001

excellent

Dec. 20, 01
creates a brilliant 3-D sound as if you were at the movie theater or concert hall.

Feb. 1528/01

Full home theater sound

Dec. 11, 01

a real masterpiece a complete portable home theater worth every Euro.
Wireless eight-channel surround headphone system.
TRANSMITTER - Integrated Dolby Surround Pro-Logic and LOGIC7 surround decoders. - AKG IVA processing for natural, spatial sound. - For TV/video/DVD/DVD(A)/Hi-fi/(SA)CD/PC/game consoles. - Three-channel PLL synthesizer for reliable reception. - Auto-tuning feature automatically tunes receiver to transmitter frequency at the push of a button. - Ease of connection to any audio source, Automatic Gain Control sets optimum audio levels continuously. - Selectable surround and stereo modes. - 3-in-1 base station: transmitter, charger, and storage cradle for the headphones. HEADPHONES - Semi-open, dynamic design. - Optimum radio transmission through walls and ceilings. Max. range: 330 ft. (100 m)*. - Choice of comfortable, detachable, easy-to-clean, fabric-covered or velour ear pads. - A single transmitter can be used with several sets of headphones. - Easy battery charging: just place headphones on receiver. No risk of overcharging. - High-power NiMh rechargeable batteries included for approx. 20 hours battery life. - Audio bandwidth: 20 Hz to 24 kHz
* under ideal transmission conditions (free-field)
DOLBY SURROUND P R O L O G I C
- Varimotion XXL transducers for extremely accurate response.
SURROUND FOR TV / HOME THEATER / HI-FI
Authentic theater surround sound.
Welcome to digital Cloud 9. The hearo 888 digital is a digital surround personal listening system with the kind of wireless headphones that high-end enthusiasts have been waiting for. Digital radio transmission and digital antenna diversity circuitry afford virtually noise and dropoutfree reception. Incredible as it may seem, the hearo 888 digital actually provides the same audio quality as comparable hardwired headphones. Patented IVA processing makes the headphone sound seem to come from loudspeakers, while the integrated Dolby Surround Pro-Logic and LOGIC7 surround decoders add surround sound signals. So, if you are looking for headphones that are equally good at dramatic movie sound effects, crystal-clear dialog, accurate music reproduction as well as the most delicate violin sound, the quietest piano notes, or the most ethereal guitar overtones, then the Hearo 888 digital is the best choice for your discriminating ears.

In short, IVA processing provides a perfectly natural, spatial (binaural) sound through headphones.

Digital transmission

Digital transmission ensures pristine C surround sound with a CD-level dynamic range and no perceptible noise. Digital radio links are immune to interference and jamming from devices emitting RF radiation such as TV sets or computers.

Eight-channel surround

Eight-channel surround is an improved version of the internationally accepted five-channel format. The new format models eight virtual loudspeakers distributed around the room. The result is an incredibly spacious sound. Eight-channel surround requires a LOGIC7 decoder.

Ear matching curves

Sound waves from a given source arrive at one ear earlier than they do at the other, (see also IVA processing, para A) because the head, trunk, and ears cause amplitude and phase shifts. All these changes can be illustrated by so-called head-related transfer function. Since these curves differ from person to person, everyone perceives sound in a different way. Ear matching curves are electronic models of outer ear transfer curves that match the headphones sound to the users acoustic perception.
Digital antenna diversity
Diversity reception is normally used in professional wireless microphone systems to ensure perfect reception even under extremely difficult conditions. An adaptive algorithm makes sure the antenna that delivers the better signal is always active to prevent dropouts.
VMAx provides surround sound from a pair of stereo loudspeakers, with no extra hardware. All you need is a stereo amplifier and speakers. The VMAx processor simulates the envelopment of surround sound.

SURROUND SOFTWARE

- Five selectable sound presets (ROCK/POP, CLASSICAL, JAZZ, MOVIE, NORM) let you match the HEARO Player sound to your personal preferences. - Automatic or manual matching of IVA processing level to available computing power.
Windows users love it: The Windows Media Player is an important tool for playing back music or video programming on the PC. You can now make this program even more powerful, simply by downloading a plug-in from AKG that provides 3-D sound through conventional headphones without expensive peripherals or complicated modifications. The secret behind this miracle are two technologies that are also used in the famous wireless surround headphone systems of the HEARO Family. IVA processing developed by AKG provides a sound that does not play inside the head as it would with normal headphone reproduction, but actually seems to come from loudspeakers placed in your listening room. The LOGIC7 decoder automatically identifies the input signal format, monitors it constantly, and simulates up to eight loudspeakers distributed around the room. It generates the 3-D sound from almost every input signal format from stereo to the latest surround standard. To avoid overburdening your PC with its need for processing power, the IVA surround processing level can be adjusted automatically or manually. Selectable presets such as MOVIE and JAZZ provide typical timbres for a more realistic sound. The Hearo Player is a real bargain for those who are looking for a way to enjoy surround sound from their PC at home or notebook computer when traveling but do not want to invest in extra hardware or throw away their favorite headphones.

HEARO-ize your PC.

HEADPHONE SURROUND CENTER
System requirements Operating system: Microsoft Windows 98 Second Edition, Windows 2000, Windows Millennium Edition, Windows XP Home Edition, Windows XP Professional Media Player: Windows Media Player 9 Series Processor: min. 450 MHz (Pentium/AMD) (1,600 MHz Pentium III recommended) RAM: 128 MB (256 MB recommended) Sound board: 16-bit Monitor: Super VGA (800 x 600) oder higher Headphones: all stereo headphones (AKG k 101, AKG k 301xtra recommended) - Available as a software plug-in for Windows Media Player 9 Series - Five selectable sound presets (ROCK/POP, CLASSICAL, JAZZ, MOVIE, NORM) let you match the HEARO Player sound to your personal preferences. - Automatic or manual matching of IVA processing level to available computing power. - High-end equipment type user interface. - Available for downloading from www.akg.com/hearoplayer as a free demo or the moderately-priced full version.
Windows is a registered trademark of Microsoft Corporation in the United States and other countries. Windows Media is either a registered trademark or trademark of Microsoft Corporation in the United States and/or other countries.

www.akg.com/hearoplayer

The Windows Media Player 9 Series supports the following audio and video file types: Audio file types: Audio-CD,.mp3,.wav,.midi,.wma Video file types:.mpeg,.avi,.wmv, Video-CD Additional file types:.asf,.auiff,.au,.wpl,.wmx,.wmd,.wmz
You can download the Windows Media Player 9 Series directly at www.akg.com/hearoplayer

WIRELESS

Page 17 High-value headphones Self-adjusting headband High-capacity rechargeable batteries k 311 ir Infrared stereo headphones with a clean sound Balance control 3 in 1 RF stereo headphones with powerful bass and a clear high end
UNIQUE AKG FEATURES Self-adjusting headband The headband automatically adjusts to your head to ensure a perfect fit. The headband also takes the weight of the headphone off of your ears and distributes it on top of your head. 3 in 1 The transmitter serves as a storage cradle and battery charger for the headphones (except k 105 uhf ). As soon as you place the headphones on the transmitter cradle, battery re-charging starts automatically. High-capacity rechargeable batteries The supplied batteries have a long life, with no risk of overcharging and minimum memory effect. Speech-optimized response AKG TV headphones boost the frequency range of human speech. Therefore, dialogue will be more intelligible amid the ambience, sound effects, and music, making it easier to catch all the subtle nuances of your favorite actors voice. Balance control Everybody perceives sound differently, and there may even be differences in sensitivity between your left and right ears. The balance control lets you adjust left and right volumes for an optimally balanced sound. Auto-tuning function Pressing the Auto-tuning button causes the headphones to tune automatically to the frequency selected on the transmitter. Patented AKG Varimotion diaphragm The diaphragm is the most important part of the speaker capsule. An ideal diaphragm should combine high compliance around the perimeter with a piston-like motion in the center. The patented Varimotion diaphragm from AKG does exactly that. It is thicker in the center than around its perimeter. The result is absolute accuracy, better imaging and clarity at high frequencies. Being thinner around the rim, the diaphragm will vibrate more easily to provide a very powerful bass range.

TV HARDWIRED

Loud and soft are highly subjective terms.
This is why TV often causes quarrels among friends or within the family. What sounds soft to one person may be too loud for the next. Of course, the volume should be set so that everybody gets all the dialog but turning the volume up does not necessarily mean the dialog becomes any clearer and certainly wont create a pleasant, relaxed mood. Sounds familiar? The reasons are simple. Everybody perceives sound differently, and your left ear may be more sensitive than your right ear. This means that sometimes it would be better if the sound were a little louder at one ear than it is at the other. Another reason is that most headphones are designed for music reproduction. If you just turn up the volume of your TV set, the ambient sounds and music become louder too so you wont hear the actors voices any better. The comfortable TV headphones from AKG have been optimized for speech reproduction and allow you to adjust the left/right volume ratio. They bring a new level of fun to TV watching. Available models - k 71 tv hardwired TV headphones - balance k 122 ir infrared wireless headphones - balance k 216 afc RF wireless headphones

k 71 tv

These cost-efficient TV headphones feature a speech-optimized sound and extra-long cable (20 ft. / 6 m). They are extremely light and comfortable to wear. A control box provides separate left and right volume controls. The k 71 tv has a dual-channel mode, too.
Long cable. Close-in sound.
Hardwire TV stereo headphones with 6 m (20 ft.) cable - Easy to connect to every TV set or hi-fi system. - Control box with separate left and right volume controls for setting volume and balance. - Mono/stereo/dual-channel mode selector (allows language selection on dual-language programming). - Speech-optimized response. - Semi-open supra-aural earphones. - Single cable for ease of use. - Easy-to-replace, washable ear pads. - Audio bandwidth: 20 Hz to 20 kHz.

TV WIRELESS

You can see at first sight that these are special headphones. The Balance Series headphones have indeed been designed for lounging on the sofa in front of the TV. Designed for couch potatoes, these wireless headphones are true stress-killers. Optimized for speech reproduction and featuring volume and balance controls, they make watching and listening to TV a highly comfortable experience, particularly, if your partner is less keen on listening to the sound of your favorite program. Another convenient feature is the automatic on/off switch: the headphones will switch on automatically when you put them on and off as you take them off.

balance k 122 ir

The balance k 122 ir uses infrared transmission that depends on a direct line of sight between the transmitter and receiver. Wherever you can see the transmitter, you can move about as you like and receive a clean signal.
The balance k 216 afc uses RF (radio) transmission. An Auto-tuning button causes the receiver to tune automatically to the transmitter frequency. You can move about freely inside your house or garden while listening, because the radio signal penetrates walls and ceilings.
A new way of listening. No cable.

balance

k 122 ir

k 216 afc

Wireless infrared TV headphones
Wireless RF TV headphones
- Balance control for adjusting the left/right volume ratio. - Optimized for speech intelligibility and accurate music reproduction. - Automatic on/off switch on the speaker arm. - Excellent wearing and listening comfort. Pleasant to wear even in a reclined position. Low weight. Also ideal for wearers of eyeglasses. - Open-back earphones for fatigue-free listening also allow you to hear the telephone ringing or other important ambient sounds. - Several headphones can be used simultaneously with a single transmitter. - Transmitter doubles as storage cradle and charger (3 in 1). - Nonstop listening: system includes two high quality NiMh rechargeable batteries. Charge one while you use the other. Charger will charge up to three batteries simultaneously in only about four hours. No memory effect. No overcharging. - Approx. 5 hours battery life - Infrared transmission ensures mobility and interference-free reception wherever you can see the transmitter. - Suited for rooms up to 65 m2 in size, max. range: 43 ft. (13 m) - Selector switch for dual-language programming (language 1 or 2) or stereo mode - Audio bandwidth: 30 Hz to 18 kHz - Approx. 4 hours battery life - RF (radio) transmission. Reliable reception through walls and ceilings within max. range of 330 ft. (100 m)* - Auto-tuning function - 864 MHz band - Audio bandwidth: 30 Hz to 18 kHz
Order your FREE copy of the AKG balance brochure: advertising@akg.com Or visit www.akg.com for more information. Availability of AKG wireless headphones subject to local legislation.

Seite 20-21

Pages 23-25
Headphones for special applications Self-adjusting headband Gold-plated screw-on jack plug and detachable cable Replaceable ear pads For DJ and mixing use with plug-in cable PORTABLE
UNIQUE AKG FEATURES Self-adjusting headband The headband automatically adjusts to your head to ensure a perfect fit. Gold plated Vario jack plug matches both 1/4 and mini-TRS jacks. The single, 99.99% oxygen-free cable provides loss-free signal connection for years of useful life. Plug-in cable with high quality miniXLR connector for easy cable replacement. Optional accessories: EK 500 S coiled headphone cable (5 m/16 ft. long; mini jack plug; mini XLR plug for connection on headphones) EK 300 headphone cable (3 m/10 ft. long; mini jack plug; mini XLR plug for connection on headphones) Replaceable ear pads are made of breathing, skin-compatible material and easy to clean. Patented AKG Varimotion diaphragm The diaphragm is the most important part of the speaker capsule. Acoustic scientists require this extremely thin piece of foil to perform the most spectacular feats. An ideal diaphragm should combine high compliance around the perimeter with a piston-like motion in the center. The patented Varimotion diaphragm from AKG does exactly that. It is thicker in the center than around its perimeter so it moves like a piston and is immune to partial oscillations. The result is absolute accuracy, better imaging and clarity at high frequencies. Being thinner around the rim, the so-called movement zone, the diaphragm will vibrate more easily to provide a very powerful bass range. The audiophile-grade k 501 uses a thicker 80-m foil with even more stable vibration performance. The diaphragms on the k 501 are hand-selected and feature trapezoidal corrugations that further enhance their excellent acoustic performance.

k 171 studio k 271 studio
For broadcast and live sound use NEW with plug-in cable
k 141 monitor Cult status headphones of the pop stars k 141 studio New, with XXL speakers for PORTABLE hi-fi enthusiasts k 240 monitor Classic studio headphones
k 240 studio Classic headphones with XXL speakers for hi-fi users k 240 df

studio monitor

Reference headphones for radio stations
Headphones for multiple applications Self-adjusting headband Vario jack plug, Gimbal suspension Powerful bass Turbo bass Clean sound

k 44 k 55 k 66

k 71 Lightweight headphones

Page 27

Headphones for hi-fi use Self-adjusting headband Gold plated Vario jack plug Replaceable ear pads
k 101 Lightweight headphones with PORTABLE powerful sound k 301 xtra Versatile headphones with ultimate accuracy

Page 28-29

High-end headphones
k 501 Highly realistic sound, ideal for classical music Self-adjusting headband Gold plated Vario jack plug Replaceable ear pads Patented AKG Varimotion speakers with hand-selected diaphragm k 1000 Reference headphones Legendary high-end headphones with binaural imaging

HI-FI STUDIO

Summary: The new K class is a must.
The gimbal-suspended earphones are very comfortable The K 271 provide exceptional low-end and high-frequency reproduction.
Summary: Both models provide great comfort, ease of use, clver details, and a really great sound for their appropriate applications at a good price. k 171/k 271

k 171 studio

k 271 studio
The best choice for tough use in loud environments. DJs love these rugged headphones that allow for comfortable single-ear monitoring and the incredible amount of isolation delivered by these closed-back earphones. And it goes without saying that the k 171 studio deliver exactly the kind of powerful sound a DJ needs.
Minimum leakage and ambient noise reduction are important requirements for monitoring in radio, TV, and recording studios. At the same time, these circum-aural headphones sound great and are light and easy to use. What makes them a first choice among studio engineers is their accurate response and the auto-shutoff feature that mutes the headphones when the user takes them off.

- Varimotion XXL speakers for ultimate accuracy. Crisp sound even at high volume levels. - High efficiency and wide dynamic range, a good choice for portable use. - Single, plug-in, easily replaceable cable with mini-XLR connector. - Frequency range: 18 Hz to 24 kHz.
For technical explanations, see page 22.

Pressestimmen

Although an open-back design, the K 240 suppressed ambient noise quite efficiently Soundwise, they were the powerful kind, but still felt very agile. Perhaps a little reserved at the high end, they provided a beautifully chiseled mid range.

RECOMMENDATION

k 240 monitor + k 141 monitor
AKG K 240 Studio wins thomann Award 2002 for:
superior sound, excellent comfort, exemplary price/ performance.

k 240 studio

Grand Prix Award AudioVideo
AUDIO VIDEO INTERNATIONAL Headphones of the Year
A classic by now, the k 240 monitor has been one of the best-selling models in AKGs history. Its wideband dynamic speakers deliver punchy bass and finely detailed highs. Its natural, uncolored sound has made it immensely popular.

k 240 df studiomonitor

Radio station reference headphones. Diffuse-field equalized and built to IRT (German Institute for Radio Technology) standards, the k 240 df provide consistent sound quality under all conditions with its ruler-flat frequency response.
The improved version of a classic upgraded with XXL speakers and higher sensitivity for a wider dynamic range and higher output brings studio standard sound to the world of hi-fi. A must for every professional user.

Winners of many awards.

Professional stereo headphones for studio use - Semi-open, circumaural earphones. - Proven AKG self-adjusting headband and gimbal suspension for excellent comfort. - 99.99% oxygen-free cable.
Professional hi-fi stereo headphones
- Dynamic wideband speakers for punchy bass and finely detailed highs. - Single cable for ease of handling. - 600-ohm impedance for special studio applications. Not for portable use. - Frequency range: 15 Hz to 20 kHz.
- Varimotion XXL speakers for ultimate accuracy. Crisp sound even at high volume levels. - High efficiency and wide dynamic range, a good choice for portable use. - Single, plug-in, easily replaceable cable with mini-XLR connector. - Frequency range: 15 Hz
- Diffuse-field equalization, meets stringent IRT (German Institute for Radio Technology) standards. - Single cable for ease of handling. - 600-ohm impedance for special studio applications. - Frequency range: 15 Hz to 20 kHz.

HI-FI BASIC

Sound: 1.3 Comfort: 1.5 Test score: 1.4 Price/performance: excellent Ranking: upper class
Good headphones for every conceivable application.

Score: 1TEST

Ranking
I loved their crisp and untiringly lively sound. A powerful, yet detailed bass range was their strong point.

B E S T

HI-FI HIGH-END

Hi-fi Design Yearbook 2003
These headphones are actually breathing music; rarely does a pair of headphones create such an accurate bass foundation, and no other model achieves this feat without stifling your ears.

Rankings 2/02

Top class.

Ranking Top class.

The K 1000 from AKG have been in production for ten years and still provide exemplary clarity.

REFERENCE CLASS

The only thing the k 1000 have in common with conventional headphones is that you wear them on your head. They are the reward for the many years AKG engineers spent searching for the ultimate natural, spacious sound. The k 1000 is a totally open design. Small leather pads hold the speakers a small distance away from the ears, creating a defined acoustic space. This is the visible aspect of the design that creates the same natural, binaural perception of sound as a pair of stereo loudspeakers would. On the inside, too, the k 1000 are totally different from any other kind of headphones. Driven by dedicated VLD magnet systems, minimum-friction multi-layer diaphragms provide planewave sound fields in front of the ears. The sound field is subjected only to the changes and reflections caused by the anatomy of the users outer ears. This is the most natural way of headphone listening. Small wonder that the k 1000 were chosen Headphones of the Year more than once.
Incredibly natural, spacious sound.
Top-of-the-line, fully professional headphone/monitor system - Top-class reference headphones, ideal monitor headphones for studio use. - Equivalent to a pair of high quality loudspeakers worn on your head, its speakers float in front of the ears. - Totally open design using minimum-friction multi-layer diaphragms and VLD (Ventilated Linear Dynamic) magnet systems for binaural sound. - Leather pads keep speakers at a defined distance from the ears, and retractable support pads allow for individual adjustment to every head shape. - Proven AKG self-adjusting headband and swiveling earphones (for adjusting the angle between speakers and ears) ensure excellent comfort. - Each k 1000 system is individually tested and numbered, and comes in a wooden box. - Connecting cable with 4-pin XLR connector and strippedand-tinned leads for connection to the loudspeaker terminals of your amplifier/receiver. - Frequency range: 30 Hz to 25 kHz.

HEADPHONES

SURROUND hearo hearo hearo

TV HI-FI HARDWIRE STUDIO

balance balance

DIGITAL

k 306 k 406 k 506 k 122 k 216 k 71

afc afc afc ir afc tv

studio

FEATURES

Headphones weight (without cable) Transmitter weight (g) Sensitivity (db/mW, dBV*) Max. sound pressure level (dB) Audio bandwidth (Hz to kHz) Power handling capability (mW) Rated impedance (ohms) Carrier frequency (MHz) Auto-tuning function Digital transmission IVA processing Dolby Surround Pro-Logic decoder LOGIC7 decoder Dolby Digital decoder VMAx Convertible jack plug (mini to 1/4) Replaceable ear pads Patented self-adjusting headband Exclusive leather headband Automatic on/off switch Swiveling earphones Acoustic ventilation for natural sound Unbreakable metal arches 99.99% oxygen-free single cable (length in m) Hard gold plated jack plug and contacts Hard gold plated 4-pin XLR connector

Cable with 4-pin XLR and stripped-and-tinned leads for direct connection to loudspeaker terminals

125 18-864 x

104 18-864 x

104 18-864 x x x x x

110 20-2,3/2,8

115 18-864

103 20-864 x

105 20-864 x

107 18-864 x

115 30-2,3/2,8

58 179

140 100*

200 94, 107* 18-55

240 91, 104* 16-55

115 30-864 x 20-19

x x x x

x x x x x x x x x x x x x x x x

x x x 6 x 3 3

Plug-in cable on headphones Computer optimized transducers and diaphragms Patented Varimotion diaphragms
Minimum-friction multilayer diaphragms with VLD (Ventilated Linear Dynamic) magnet systems
Open-back dynamic earphones Semi-open dynamic earphones Closed dynamic earphones NdFe magnets Suited for (SA)CD, DVD(A), MD, DAT Suited for use with portable equipment Suited for use with desktop or notebook computers Battery life (hours) Approx. max. range (m) Price (recommended retail EUR)
*** In Deutschland nicht erhltlich.

x x x x 199,-

x x x x 798,-

x x x x 998,-

x x x x 91,20

x x x x 99,-

x x x x 119,-

x x x x 139,-

x x x x 169,-

x x x x 185,-

AKG WMS 40 Wireless Microphone System

WMS 40 AEROBICS SYSTEM

- C 444 L headset - PT 40 bodypack transmitter - SR 40 receiver - CB 40 neoprene bag

WMS 40 HANDHELD SYSTEM

- HT 40 handheld transmitter with D 880 microphone element - SR 40 receiver

WMS 40 BODYPACK SYSTEM

- PT 40 bodypack transmitter - SR 40 receiver - MK GL guitar cable

SPECIFICATIONS

PROCESSOR hearo 999 AUDIOSPHERE DIGITAL SURROUND PROCESSOR

k 141 k 141

monitor studio

k 240 k 240

k 240 k 44

df studio monitor

20-600

225 101, 114* 18-55

15-600

240 91, 104* 15-55

190 115* 18-32

210 114* 16-32

210 112* 18-32

140 100* 20-19

160 101* 18-19

245 102* 18-55

16-120

30-120

Specifications subject to change without notice.

Printed in Austria.

08/03/PROA 1463