MVAK912-001RWireless Headphone Receiver

Transmitter is connected to AC power and audio source and receives signal. Headphones are not on the transmitter, charging function is off. Transmitter is connected to AC power. Headphones are on the transmitter, charging function is on. Transmitter has detected no signal for several minutes, headphones are not on the transmitter, charging function is off, OR transmitter is not connected to AC power. EN USER INSTRUCTIONS AUTO-TUning ReCHARgeAble wiReless HeAdpHOnes FR MODE D’EMPLOI CAsqUe sAns fil ReCHARgeAble AUTO-RéglAble DE BEDIENUNGSANLEITUNG KAbellOses sTeReO- KOpfHöReRsysTem ES MODO DE EMPLEO sisTemA de AURiCUlARes inAlámbRiCOs COn sinTOnizACión AUTOmáTiCAO FREN cB (4) (15) (16) (17) AAA AAA 1 Introduction dear customer: Thank you for purchasing an AKg product. The K 912 wireless headphone system is based on advanced UHf transmission technology. in order to make optimum use of the benefits of your K 912, please take a few min- utes to read the instructions below carefully before operating the equipment. please keep the manual for future reference. 2 DESCRIPTION The K 912 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 100 feet/50 m (864 mHz: 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 head- phones simultaneously. 3 Safety and Environment 3.1 Safety 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 trans- mitter’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 con- forming to local waste disposal rules. never throw batteries into fire. 5. Operate the transmitter with the supplied 8 VdC, 200 mA AC adapter only. Check that the AC voltage stated on the AC adapter is the same as that avail- able 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, tempera- tures below freezing, or impacts. 9. never use alcohol, petroleum-based cleaners, or paint thinners to clean the headphones or transmitter. 10. Use the equipment for the applications described in this manual only. AKg cannot accept any liability for damages resulting from improper handling or misuse. 11. Also refer to section 7 important notes. 3.2 Environment 1. The AC adapter will draw a small amount of current even when the transmitter is switched off. To save energy, disconnect the AC adapter from the power outlet if you will leave the equipment unused for a long period of time. 2. when scrapping the equipment, separate the case, circuit boards, and cables, and dispose of all compo- nents in accordance with local waste disposal rules. 3. The packaging of the equipment is recyclabe. To dis-pose of the packaging, make sure to use a collec- tion/recycling system provided for that purpose and observe local legislation relating to waste disposal and recycling. 4 Unpacking your headphone system package contains the following components: > K 912 HEADPHONES > T 912 TRANSIMITTER (Fig. B) > CONNECTING CABLE (15) Connecting cable with ste- reo mini jack plug and l/R RCA plugs for connecting the transmitter to your audio source > AC ADAPTER (16) for powering the transmitter (8 V dC, 200 mA) > TWO 1.2 V AAA SIZE NiMH, 550 mAh RECHARGEABLE BATTERIES (17) for powering the headphones if any of the above items should be missing from the package, contact your AKg dealer immediately. 5 Controls 5.1 Headphones (Fig. A and C) (1) POWER: switches power to the headphones On and Off (2) Status LED: illuminates to indicate power to the headphones is On (3) Charging socket (4) Battery compartment (beneath the detachable ear pad) (5) AUTOTUNING switch and LED: activates the automatic tuning function (6) VOLUME: control 1 Introduction nous vous remercions d’avoir choisi un produit AKg. le système casque sans fil K 912 fait appel à une tech- nique de transmission UHf ultra-moderne. pour profiter au maximum des avantages que vous offre le K 912, lisez très attentivement ce mode d’emploi avant la mise en service de votre casque. Conservez soigneusement le mode d’emploi pour pouvoir le consulter lorsque vous vous posez des questions. 2 DESCRIPTION Ce système casque > repose sur les plus récentes avancées de la tech- niques de transmission radio dans la bande UHf > dispose d’une fonction „Autotuning“ permettant un réglage automatique optimal du casque sur la fréquence émettrice > peut être connecté sur tout appareil audio, vidéo, télévision,pC ou micro-ordinateur portable ayant une sortie casque ou AUdiO line > Vous offre un plaisir d’écoute absolu en vous laissant une parfaite liberté de mouvement dans un rayon de 100 m (916 mHz: 50 m) dans des conditions de transmission idéales (champ libre); le signal traverse les murs et les plafonds Vous pourrez partager avec d’autres personnes le plai- sir d’écoute exceptionnel offert par ce système casque en utilisant plusieurs casques sur un même émetteur. 3 Sécurité et écologie 3.1 Sécurité 1. pour l’alimentation du casque, utilisez exclusivement 2 accus de 1,2 V (fournis avec le système) ou 2 piles de 1,5 V dimension AAA. 2. n’essayez jamai…

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Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Gentlemen: This letter is to comply with Section 0.457(d)(2)(i) pertaining to confidential material. Uni-Art Precise Products Ltd. would like the following documents regarding this submission for FCC ID: MVAK912-001R to be kept confidential. 1. BLOCK DIAGRAM 2. UHF BLOCK DIAGRAM 3. SCHEMATICS 4. UHF SCHEMATICS 5. OPERATIONAL DESCRIPTION The above material contains trade secrets or technical data, which would customarily be guarded from competitors. We do not want these documents to be accessible to the general public. Sincerely, Simon Chan Uni-Art Precise Products Ltd.

98-14-2355 Background: Black Text: White Coating: P.P. Size : 28(W) X 23(H)mm - 1mm HEADPHONE SCALE 1:1 R side WARNING: MODIFICATION OF THIS DEVICE TO RECEIVE CELLULAR RADIO TELEPHONE SERVICE SIGNALS IS PROHIBITED UNDER FCC RULES AND FEDERAL LAW.

Antenna UHF module UHF module

Produkte Products Prüfbericht - Nr.: Test Report No.: 16020577 001 Seite 2 von 19 Page 2 of 19 TEST SUMMARY 5.1 RADIATED EMISSION FOR FCC PART 15 PER SECTION 15.109(a) RESULT: Pass 5.2 38 dB REJECTION SIGNAL FROM CELLULAR FREQUENCY BAND 15.121(b) RESULT: Pass Produkte Products Prüfbericht - Nr.: Test Report No.: 16020577 001 Seite 3 von 19 Page 3 of 19 Contents 1 GENERAL REMARKS........................................................................................................... 4 1.1 COMPLEMENTARY MATERIALS......................................................................................... 4 2 TEST SITES.......................................................................................................................... 4 2.1 TEST FACILITIES................................................................................................................ 4 2.2 LIST OF TEST AND MEASUREMENT INSTRUMENTS........................................................... 5 2.3 TRACE ABILITY................................................................................................................... 5 2.4 CALIBRATION..................................................................................................................... 5 2.5 MEASUREMENT UNCERTAINTY......................................................................................... 6 2.6 LOCATION OF ORIGINAL DATA........................................................................................... 6 2.7 STATUS OF FACILITY USED FOR TESTING........................................................................... 6 3 GENERAL PRODUCT INFORMATION................................................................................... 7 3.1 PRODUCT FUNCTION AND INTENDED USE......................................................................... 7 3.2 RATINGS AND SYSTEM DETAILS........................................................................................ 7 3.3 INDEPENDENT OPERATION MODES................................................................................... 7 3.4 SUBMITTED DOCUMENTS................................................................................................... 8 4 TEST SET-UP AND OPERATION MODE............................................................................... 9 4.1 PRINCIPLE OF CONFIGURATION SELECTION..................................................................... 9 4.2 TEST OPERATION AND TEST SOFTWARE........................................................................... 9 4.3 SPECIAL ACCESSORIES AND AUXILIARY EQUIPMENT...................................................... 9 4.4 COUNTERMEASURES TO ACHIEVE EMC COMPLIANCE.................................................... 9 4.5 TEST SET-UP...................................................................................................................... 10 5 TEST RESULTS E MI S S I ON..................................................................................... 11 5.1 RADIATED EMISSION FOR FCC PART 15 PER SECTION 15.109(A) ................................. 11 5.2 38 DB REJECTION SIGNAL FROM CELLULAR FREQUENCY BAND.................................... 16 6 PHOTOGRAPHS OF THE TEST SET-UP.............................................................................. 17 7 LIST OF TABLES................................................................................................................ 19 8 LIST OF PHOTOGRAPHS.................................................................................................... 19 Produkte Products Prüfbericht - Nr.: Test Report No.: 16020577 001 Seite 4 von 19 Page 4 of 19 1 General Remarks 1.1 Complementary Materials None 2 Test Sites 2.1 Test Facilities TÜV Rheinland (Guangdong) Ltd. EMC Laboratory Guangzhou Auto Market, Yuan Gang Section of Guangshan Road Guangzhou 510650 P. R. China Produkte Products Prüfbericht - Nr.: Test Report No.: 16020577 001 Seite 5 von 19 Page 5 of 19 2.2 List of Test and Measurement Instruments Table 1: List of Test and Measurement Equipment Kind of Equipment Type Manufacturer S/N Calibrated until Calibrated Interval EMI Test Receiver ESCI-3 Rohde & Schwarz 100216 16.Mar.2010 1 year Spectrum Analyzer FSP30 Rohde & Schwarz 100286 27.Aug.2010 1 year Trilog-Broadband Antenna VULB9168 SCHWARZBECK MESS- ELEKTRONIK 209 07.Nov.2010 2 year Double-Ridged Waveguide Horn Antenna HF906 Rohde & Schwarz 100385 18.Jul.2010 2 year Pre-amplifier AFS42-00101800- 25-S-42 MITEQ 1101599 31.Jul.2010 2 year Band Reject Filter BRM50702 Micro-Tronics 023 14.Mar.2010 2 year Pre-amplifier AFS33-18002650- 30-8P-44 MITEQ 1108282 16.Mar.2010 2 year 3m Anechoic Chamber N/A Albatross Project GmbH N/A 10.Feb.2010 1 year 2.3 Trace ability All measurement equipment calibrations are traceable to NIST or where calibration is performed outside the United States, to equivalent nationally recognized standards organizations 2.4 Calibration Equipment requiring calibration is calibrated periodically by the manufacturer or according to manufacturer’s specifications. Additionally all equipment is verified for proper performance on a regular basis using in house standards or comparisons. Produkte Products Prüfbericht - Nr.: Test Report No.: 16020577 001 Seite 6 von 19 Page 6 of 19 2.5 Measurement Uncertainty Uncertainty for conducted emissions measurements is ± 2.51dB. Uncertainty for radiated emissions measurements is ± 4.9dB (30MHz-1GHz), ± 4.84dB (>1GHz). The reported expanded uncertainty is based on a standard uncertainty multiply by a coverage factor k=2, providing a level of confidence of approximately 95%. 2.6 Location of original data The original copies of all test data taken during actual testing were delivered to the applicant. A copy has been retained in the TUV Rheinland (Guangzhou) file for certification follow-up purposes. 2.7 Status of facility used for testing TÜV Rheinland (Guangdong) Ltd. EMC Laboratory; Guangzhou Auto Market, Yuan Gang Section of Guangshan Road…

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Produkte Products Prüfbericht - Nr.: Test Report No.: 16020577 001 Seite 16 von 18 Page 16 of 18 6 Photographs of the Test Set-Up Note: “HP4892” showed on the test setup photo is the internal name code of the receiver. Photograph 1: Set-up for Radiation Measurement below 1GHz Produkte Products Prüfbericht - Nr.: Test Report No.: 16020577 001 Seite 17 von 18 Page 17 of 18 Photograph 2: Set-up for Radiation Measurement above 1GHz