HEARO DIGITAL - Earphones AKG - Free user manual and instructions

USER MANUAL HEARO DIGITAL AKG

User Instructions . p. 5

Please read the manual before using the equipment!

Mode d'emploi p. 9

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Parts 74, 15, and 90 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and the receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.

Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCC regulations.

Changes or modifications not expressly approved in writing by AKG Acoustics may void the user's authority to operate this equipment.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

1 Safety and Environment

1. Operate the headphones with two AAA size 1.2 V rechargeable (supplied) or two 1.5 V dry batteries only.
2. Never try to charge dry batteries using the charger.
3. Before charging the headphones batteries, always make sure that the batteries in the headphones are rechargeable types.
4. Never try to open the headphone case. Refer servicing to qualified service personnel only.
5. Always switch the headphones OFF after use.

6. Never use petroleum-based cleaners or paint thinners to clean the headphones.

7. Be sure to dispose of used batteries as required by local waste disposal rules. Never throw batteries into a fire (risk of explosion) or household garbage can.

8. When scrapping the equipment, remove the batteries, separate the case, circuit boards, and cables, and dispose of all components in accordance with local waste disposal rules.

1.1 Safety

1.2 Environment

2 Description

Dear Customer:

Thank you for purchasing an AKG product. This manual contains important instructions for setting up and operating your equipment. Please take a few minutes to read the instructions below carefully before operating the equipment. Please keep the manual for future reference. Have fun and impress your audience!

These headphones have been designed specifically for use with AKG HEARO Series digital transmitters and feature an integrated diversity receiver.

The receiver converts the digital transmitter signal into an analog binaural signal. Digital transmission ensures a degree of reliability that would be impossible to achieve with analog technology.

Reflections of the transmitter signal off metal objects etc. may weaken or even cancel the transmitter signal in some places (so-called "dead spots"). In many cases, all it takes to restore clear reception is to move a few inches to one side. The receiver in the HEARO DIGITAL uses two antennas integrated in the arches to receive the transmitter signal at two different points in space. The diversity circuit will automatically activate the antenna that delivers the better signal at any time. This system reduces the number of dead spots considerably and dramatically improves reliability of reception.

2.1 Introduction

The HEARO DIGITAL uses the proven AKG self-adjusting headband for automatic adjustment to your head.

2.2 Unpacking

1 pair of headphones and 2 replacement ear pads

2 1.2 V AAA size NiMh rechargeable batteries (inside the headphones)

1 quick charger for the rechargeable batteries inside the headphones

If any of these components is missing, contact your AKG dealer immediately.

2.3 Controls 2.3.1 Headphones

Fig. 1: Controls on headphones

1. OFF/ON: On/off switch
2. Status LED (green/red): The Status LED indicates the following conditions:

LED is lit green.	● Headphones are ON, batteries are OK.
LED is dark.	● Headphones are OFF. ● Headphones are ON, batteries are dead or no batteries are inside the headphones.
LED is lit red.	● Headphones are OFF, batteries are being charged.

1. Charging jack and contacts (The charging contacts are inactive if you use the headphones with the HEARO 999 AUDIOSPHERE II DIGITAL TRANSMITTER.)
2. Battery compartment (beneath the detachable ear pad)
3. Frequency selector
4. VOLUME control
5. BALANCE control

2.3.2 Charger

Fig. 2: Charger.

1. Charger
2. Charging cable

3 Operating Notes

3.1 Charging Batteries inside the Headphones

In order to ensure the longest possible service life for the rechargeable batteries, we deliver them uncharged. Therefore, charge the supplied batteries before first operating your headphones system.

The supplied batteries have been inserted into the headphones for your convenience.

If you operate the headphones on dry batteries, never try to recharge these batteries. This would cause serious damage to your headphones. Dispose of dead batteries conforming to local waste disposal rules.

Do not use any other charger than the supplied quick charger with the "AKG" imprint on the connector! Using other types of chargers or AC adapters may damage the headphones.

1. Use the OFF/ON switch (1) to switch the headphones off. When the power is off, the Status LED (2) will be dark.
2. Plug the charging cable (9) into the charging jack (3) on the headphones.
3. Check that the AC voltage stated on the charger is the same as that available in your country. If it is, connect the charger (8) to a convenient AC outlet.

The Status LED (2) will be lit red to indicate the batteries inside the headphones are being charged.

The batteries will be fully charged after approximately 2 hours. (The Status LED (2) will go out.)

1. Unplug the charging cable (9) from the headphones and disconnect the charger (8) from the power outlet. (The charging current is very low, so the headphones or batteries will not be damaged even if you forget to unplug the charging cable.)

In order to maintain full battery capacity for as long as possible, discharge the batteries completely about once a month:

1. Switch the headphones on and leave them on the shelf until the Status LED (2) extinguishes.
2. Recharge the 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.

a

b

1. Rotate the ear pad on the left-hand earphone approximately 10^ CCW to unlock the bay-onet mount and remove the ear pad.
2. Remove the dead batteries.
3. Insert the new batteries aligning them with the polarity marks inside the battery compartments.
4. Replace the ear pad on the earphone and rotate the ear pad approximately 10^ CW to the point that you can feel it has locked.
5. Use the OFF/ON switch (1) to switch the headphones on. The status LED (2) will be lit green.
6. Set the frequency selector (5) on the headphones and the FREQ selector on the transmitter to the same channel: 1 - 1, 2 - 2, or 3 - 3.

For further details on operation, cleaning, and troubleshooting refer to your transmitter manual.

Important!

Important!

Refer to fig. 1.

3.2 Discharging Rechargeable Batteries

3.3 Replacing Batteries

Fig. 3: Removing earpads and inserting batteries.

Refer to figs. 31 and 3b.

Refer to fig. 3c.

3.4 Setting Up the Headphones

4.1 Headphones	Carrier frequency:	914 MHz or 864 MHz (see headband)
	Power supply:	3 VDC (2 x 1.2 V AAA size NiMh rechargeable batteries supplied)
	Battery life:	approx. 5 hours (NiMh rechargeable batteries)
	Frequency range:	18 Hz to 24,000 Hz
	Max. SPL:	approx. 104 dB SPL
	Weight:	approx. 12.4 oz. (350 g)
	Distortion:	<1%
	Type:	semi-open dynamic headphones
4 2 Charger	Input / output voltage:	230 VAC / 6 VDC
	Current consumption:	1000 mA
	Connector:	1/8" special jack

This equipment (864 MHz version) complies with the following standards: EN 301489-9 V1.3.1; EN 301357-2 V1.2.1; EN 61000-3-2:2000; EN 61000-3-3:1995+A1:2001; EN 60950:2000; EN50371:2002

DECLARATION OF CONFORMITY

Document No.351/06-2003 replaces No.

Type of Product: Wireless Dolby Surround Headphone Set

Brand, Model No.: HEARO 999 AUDIOSPHERE II (Transmitter 864MHz) and HEARO DIGITAL (Receiver 864MHz) (Including power supply)

We declare that the above mentioned product is in conformity with the following European Directive:

No.99/5 EC; Radio Equipment and Telecommunications Terminal Equipment

The conformity is achieved by fulfilling the following European Standard(s):

EN301489-9V1.3.1;EN301357-2V1.2.1;EN61000-3-2:2000 EN61000-3-3:1995+A1:2001;EN60950:2000;EN50371:2002

Product examination was carried out by:

TÜV Österreich, Notified Body 0408
Deutschstrasse 10
1230 Wien, Austria

Manufacturer's Signature:

hucocb Managing Director Dr. Hugo Lenhard-Backhau

This declaration certifies the accordance with the above mentioned EC-Directive but does not assure certain attributes of the product.

AKG Acoustics GmbH hereby declares that the product HEARO DIGITAL complies with the essential requirements and other relevant provisions of Directive 1999/5/EC.

H A Harman International Company

AKG Acoustics GmbH

Bodenseestraße 228, D-81243 München/GERMANY, Tel: [phone], Fax: [phone],

www.akg-acoustics.de, e-mail: [e-mail], Hotline: [phone], [e-mail]

AKG ACOUSTICS, U.S.

914 Airpark Center Drive, Nashville, TN 37217, U.S.A., Tel: [phone], Fax: [phone], www.akgusa.com, e-mail: [e-mail]

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