Dispose of spent dry or rechargeable batteries conforming to local waste disposal rules. 1.4 Never throw batteries into a fire. Operate the T 105 UHF transmitter with the supplied 9 VDC, 200 mA AC adapter only. 1.5 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. Always switch the headphones OFF after use. 1.6 Never try to open the headphone or transmitter case. Refer servicing to qualified service 1.7 personnel only. Never place the equipment near heat sources such as radiators or electric heaters or 1.8 expose it to direct sunlight, excessive dust, humidity, rain, temperatures below freezing, or impacts. Never use petroleum-based cleaners or paint thinners to clean the headphones or trans-1.9 mitter. If you do not use your headphones system for an extended period of time (e.g., when tra-1.10 veling), disconnect the AC adapter from the AC outlet. Also refer to section 4.4 Important Notes. 1.11 2 Description 2.1 General 2.2 Unpacking Your headphones system comprises the following components: 1 pair of headphones 1 transmitter with integrated battery charging feature 2 stereo connecting cables with gold plated connectors for linking the transmitter to your audio source: 1 RCA cable, 1 jack cable (mini jack to 2 x RCA connectors) 1 mini jack/1/4” jack adapter 1 AC adapter for powering the transmitter 2 1.2 V AAA size NiCd rechargeable batteries for powering the headphones (inside the headphones) 1 charging cable for charging the rechargeable batteries inside the headphones. If anything is missing, contact your AKG dealer immediately. 2.3 K 105 UHF Headphones 2.3.1 Controls Refer to fig. 1: 1. POWER: Switches the headphones ON or OFF. 2. Green status LED: Lights constantly when the headphones are ON. 3. Charging jack 4. Battery compartment (beneath the detachable ear pad) 5. TUNING: fine tunes the reception frequency 6. VOLUME: adjusts the headphones volume level 7. Self-adjusting headband 2.4 T 105 UHF Transmitter 2.4.1 Controls Refer to fig. 2: Dear customer: Thank you for purchasing an AKG product. This headphones system • uses state-of-the-art UHF radio transmission technology; • uses automatic gain control (AGC) to modulate the transmitter RF section for high transmission quality; • connects to any audio, video, TV set, or PC with a headphones or line output; • provides perfect sound reproduction, full mobility, and signal transmission through walls and ceilings over a distance of up to 330 feet (100 m); The K 105 UHF system is available for two different LPD frequency bands: 914 MHz for the US and 864 MHz for various European countries. The K 105 UHF system lets you share your listening enjoyment with other persons.You can operate your transmitter with several headphones simultaneously. K 105 UHF headphones are also available separately. In order to make optimum use of the benefits of your K 105 UHF, please take a few minutes to read the instructions below carefully before operating the equipment. Please keep the manual for future reference. Depending on which version you purchased, the T 105 UHF transmitter operates in the 914 MHz or 864 MHz UHF band. The two versions feature the same controls and an antenna integrated in the transmitter case. All operating instructions are the same for both versions. 8. Audio Inputs INPUT L/R: RCA input jacks for the left and right channels • !!: Stereo mini jack 9. 9 V 0.2 A: Input jack for AC adapter 10.A-B-C: This slide switch selects one of three different carrier frequencies. 11.Charging jack for charging the rechargeable batteries inside the headphones 12.Status LED: Indicates the current status of the transmitter and the built-in charging feature. 2 Description 2.4.2 Status LED (12) If LED is... Transmitter ... …lighting green …is connected to AC power and audio source, and receives signal. Headphones are not connected to transmitter via charging cable. .…is connected to AC power and audio source, and receives signal. Headphones are connected to transmitter via charging cable and switched ON so batteries are not being charged. .…is connected to AC power and audio source, and receives signal. Headphones are connected to transmitter via charging cable. Batteries are inserted the wrong way and are therefore not being charged. …lighting orange: …is connected to AC power and audio source, and receives signal. Headphones are connected to transmitter via charging cable and are being charged. …lighting red: …is connected to AC power and audio source, and receives no signal. Headphones are connected to transmitter via charging cable and are being charged. …dark: …has detected no signal for approx. 4 minutes OR …is not connected to AC power. 3 Audio and Power Connections You may connect the T 105 UHF transmitter to a headphones output (mini jack or 1/4” jack), 3.1 Connecting the Trans- LINE, or REC outputs. mitter to Your Audio Source 1. Before connecting...