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Digital: Refer to section 4.6 on page 18. Connecting cables are included with your HEARO 888 DIGITAL. Connect the cable on the supplied AC adapter to the DC 9 V jack on the transmitter rear panel and the adapter to a convenient power outlet. Charge the batteries inside the headphones. Refer to section 4.2. Switch the transmitter on by pressing the ON switch. Switch the headphones on by setting the OFF/ON switch to ON. Set the frequency selector on the headphones and the FREQ selector on the transmitter to the same channel: ”FREQ 1” -”1”, ”FREQ 2” - ”2”, or ”FREQ 3” - ”3”. . . . . . 1 HEARO 888 DIGITAL 1 Safety and Environment 1. Operate the headphones with two AAA size 1.2 V rechargeable (supplied) or 1.5 V dry batteries only. 1.1 Safety 2. Never try to charge dry batteries using the transmitter’s 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 the 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, vibrations, or impacts. 9. Never use alcohol, petroleum-based cleaners, or paint thinners to clean the headphone or transmitter case. 10.If you do not use your transmitter for an extended period of time (e.g., when traveling), disconnect the AC adapter from the AC outlet. 11.Use the equipment for the applications described in this manual only. AKG cannot accept any liability for damages resulting from improper handling or misuse. 12 Also refer to section 4.1 Important Notes. 1. Be sure to dispose of used batteries as required by local waste disposal rules. Never throw batteries 1.2 Environment into a fire (risk of explosion) or garbage bin. 2. 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. 3. The packaging of the equipment is recyclabe. To dispose of the packaging, make sure to use a col- lection/recycling system provided for that purpose and observe local legislation relating to waste disposal and recycling. 2 Description Dear Customer: 2.1 Introduction 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! If you have any questions beyond the scope of this Manual, do not hesitate to visit our website at: Your headphone system comprises the following components: 2.2 Unpacking 1 pair of 1 HEARO 1 AK 1 1 AK 2 1 DK 2 1 mini to 1 9 VDC, 2 1.2 V HEARO 888 RCA to mini jack coaxial 1/4" 500 mA AAA size DIGITAL DIGITAL RCA to 2 x RCA digital stereo AC NiMH head-transmitter stereo stereo cable adapter adapter recharge- phones connect-connectable bating cable ing cable teries Check that the package contains all the parts listed above. If anything should be missing, please contact your AKG dealer. • HEARO 888 DIGITAL Card 2.3 Optional Accessories • External charger for headphones This headphone system 2.4 General Description • uses state-of-the-art UHF radio transmission technology; • uses digital signal transmission and digital antenna diversity for high transmission quality; • connects to any audio, video, TV set, or PC with a headphones or line output or a coaxial digital output; • provides perfect sound reproduction, full mobility, and signal transmission through walls and ceilings over a distance of up to 165 feet (50 m); • provides three selectable carrier frequencies; • uses proprietary IVA technology for exceptionally realistic, three-dimensional listening; • features an integrated Dolby Surround Pro Logic decoder for perfect reproduction of hi-fi, TV, PC, or video sound in Dolby surround format; • provides a LOGIC7 decoder for adaptive simulation of up to eight loudspeakers with automatic adjustment to the input signal format and full compatibility to Dolby Surround; • offers several sound presets and a special interface for loading selected ear matching curves from an optional chip card. HEARO 888 DIGITAL 2 Description Professional quality processor Universal interfacing Digital signal processing Digital signal transmission using ACS Audio Coding System Digital receiver Acoustic status indicator UHF headphones ava...