2AADS-NERO-WSAWireless Subwoofer Transmitter/Receiver Kit

5.8 WIRELESS S U BWOOFER ACCESSOR Y U SERS GUIDE • (1) WSA RX Receiver ®® • (1) WSA TX Transmitter • (1) 5.9V DC Adapter • (1) Mounting Bracket NERO WSA USERS GUIDE Each WSA TX & WSA RX comes with an included bracket for mounting to a subwoofer, flat surface or other applicacations. Follow these steps to install a receiver to the back of a subwoofer. WSA RX bracket Attach the WSA RX to the bracket with a firm press. The unit will snap into place. Use an RCA cable and the provided power cable to complete the install. USERS GUIDE U S E RS GUIDE For Pairing With The WSA TX: 1. On the WSA RX receiver, connect the Sub Out output to the LFE/Mono input on the sub amplifier. 2. On the WSA TX transmitter, connect an audio source to the Audio In RCA jack. For LFE/mono signals use the L channel of the RCA jack. 3. Plug in the power supplies to the wall outlet, but wait to apply power. 4. On the WSA RX receiver, power the device by applying the 5.9V DC in. 5. Press the Pair button on the WSA RX. 6. Within 10 seconds of pressing Pair on the receiver, power on the WSA TX transmitter by applying the 5.9V DC in. Note: During the boot up process the WSA TX searches for the WSA RX in Pair mode and connects automatically. 7. The LED indicator light will flash while not connected. Once the LED stops flashing and turns solid then the connection is complete. 8. If the Pairing fails, refer to the troubleshooting steps of this guide. USERS GUIDE USERS GUIDE NERO WSA man. 12/18 WARRANTY All OSD AUDIO electronics have (2) year Limited Warranty against defects in materials and workmanship. Proof of purchase must accompany all claims. During the warranty period OSD AUDIO will replace any defective part and correct any defect in workmanship without charge for either parts or labor. OSD AUDIO may replace returned electronics with a product of equal value and performance. In such cases, some modifications to the mounting may be necessary and are not OSD AUDIO’s responsibility. Damage to or destruction of components due to application of excessive power voids the warranty on those parts. In these cases, repairs will be made on the basis of the retail value of the parts and labor. To return for repairs, you must email customer service at [email protected] for a Returned Merchandise Authorization (RMA) number then the unit must be shipped to OSD AUDIO at the owner’s expense, along with a note explaining the nature of service required. Be sure to pack the product(s) in a corrugated container with at least 3 inches of resilient material to protect the unit from damage in transit. This Warranty Does Not Cover: Damage caused by abuse, accident, misuse, negligence, or improper operation (installa- tion). Any products that have been altered or modified. Any product whose identifying number of decal, serial #, etc. has been altered, defaced or removed. Normal wear and maintenance. osduadio.com 5725-5850MHz FCC Warnning: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection againstharmful interference in a residential installation. This equipment generates, uses and can radiateradio frequency energy and, if not installed and used in accordance with the instructions, maycause harmful interference to radio communications. However, there is no guarantee thatinterference will not occur in a particular installation. If this equipment does cause harmfulinterference to radio or television reception, which can be determined by turning the equipmentoff and on, the user is encouraged to try to correct the interference by one or more of thefollowing measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and 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. Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your 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. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2022-8-15> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2AADS-NERO-WSA NERO-WSA For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： Dave Chai/Manager Company: OSD Audio.Inc Address: 775.columbia st,brea CA92821 United States Phone: (562) 697-2600 Fax: (562) 697-2600 E-Mail: [email protected]

OSD Audio.Inc 775.columbia st,brea CA92821 United States Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2022-8-15 To whom it may concern: We, the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2AADS-NERO-WSA including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. By signing this application form, we agree to Eurofins’ current valid General Terms and Conditions (AGB),Testing and Certification Regulations (PZO) which can be viewed on following website www.eurofins.de/ee or retrieved on request. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： Dave Chai/Manager Company: OSD Audio.Inc Address: 775.columbia st,brea CA92821 United States Phone: (562) 697-2600 Fax: (562) 697-2600 E-Mail: [email protected]

OSD Audio.Inc 775.columbia st,brea CA92821 United States UNII Device Declaration Letter To whom it may concern: We have declared below featured for FCC equipment authorization, Device FCC ID: 2AADS-NERO-WSA (1) DFS Device: Master Client with Radar detection capability N/A Client without radar detection capability, (2) Active / Passive Scanning , adhoc mode access point capability Frequency Band (MHz) Active Scanning (the device can transmit a probe (beacon)) passive scanning (where the device is can listen only with no probes) Ad Hoc Mode capability Access point capability 5725-5850 Yes No Yes No Yes No Yes No (3) Country code selection ability Yes No If yes, pls explain how it was implemented: (4) Meet 15.202 requirement Yes No pls check below : A master device is defined as a device operating in a mode in which it has the capability to transmit without receiving an enabling signal. In this mode it is able to select a channel and initiate a network by sending enabling signals to other devices A client device is defined as a device operating in a mode in which the transmissions of the device are under control of the master. A device in client mode is not able to initiate a network. (5) For client devices that have software configuration control to operate in different modes (active scanning in some and passive scanning in others) in different bands (devices with multiple equipment classes or those that operate on non-DFS frequencies) or modular devices which configure the modes of operations through software, the application must provide software and operations description on how the software and / or hardware is implemented to ensure that proper operations modes cannot be modified by end user or an installer. Apply Does not apply (If apply, pls help to provide explanation on it was implement, and how software was controlled) Should you have any questions or comments regarding this matter, please have my best attention. Sincerely, (Signed) Name/Title： Dave Chai/Manager Company: OSD Audio.Inc Address: 775.columbia st,brea CA92821 United States Phone: (562) 697-2600 Fax: (562) 697-2600 E-Mail: [email protected]

FCC ID: 2AADS-NERO-WSA NERO-WSA External Photos of the EUT Photo 1 Photo 2 Photo 3 FCC ID: 2AADS-NERO-WSA Photo 4 Photo 5 Photo 6 FCC ID: 2AADS-NERO-WSA Photo 7

FCC ID: 2AADS-NERO-WSA NERO-WSA Internal Photos of the EUT Photo 1 Photo 2 Photo 3 FCC ID: 2AADS-NERO-WSA Photo 4 Photo 5 Photo 6 Antenna 1 Antenna 1

RF Exposure evaluation FCC ID: 2AADS-NERO-WSA Exposure category: General population/uncontrolled environment EUT Type: Production Unit Device Type: Mobile Device 1. Reference According to §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to §1.1310 and §2.1091 RF exposure is calculated. KDB447498 D01: Mobile and Portable Devices RF Exposure Procedures and Equipment Authorization Policies 2. Limit Limits for Maximum Permissible Exposure (MPE)/Controlled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 1842/f 61.4 / / 1.63 4.89/f 0.163 / / (100) * (900/f 2 )* 1.0 f/300 5 6 6 6 6 6 Limits for Maximum Permissible Exposure (MPE)/Uncontrolled Exposure Frequency Range(MHz) Electric Field Strength(V/m) Magnetic Field Strength(A/m) Power Density (mW/cm²) Averaging Time (minute) Limits for Occupational/Controlled Exposure 0.3 – 3.0 3.0 – 30 30 – 300 300 – 1500 1500 – 100,000 614 824/f 27.5 / / 1.63 2.19/f 0.073 / / (100) * (180/f 2 )* 0.2 f/1500 1.0 30 30 30 30 30 F=frequency in MHz *=Plane-wave equivalent power density 3. MPE Calculation Method Predication of MPE limit at a given distance Equation from page 18 of OET Bulletin 65, Edition 97-01 S=PG/4πR² Where: S=power density P=power input to antenna G=power gain of the antenna in the direction of interest relative to an isotropic radiator R=distance to the center of radiation of the antenna 4. Antenna Information NERO-WSA can only use antennas certificated as follows provided by manufacturer; Antenna No. Model No. of antenna: Type of antenna: Gain of the antenna (Max.) Frequency range: 5GWIFI / Internal ANT 2.5dBi for 5725-5850MHz for ANT 1&2 5. Manufacturing Tolerance GFSK(Average) Antenna 1 Channel Low Middle High Target (dBm) 14.0 14.0 14.0 Tolerance ±(dB) 1.0 1.0 1.0 GFSK(Average) Antenna 2 Channel Low Middle High Target (dBm) 14.0 14.0 14.0 Tolerance ±(dB) 1.0 1.0 1.0 6. Standalone MPE Result As declared by the Applicant, the EUT is a wireless device used in a fix application, at least 20 cm from any body part of the user or nearby persons; from the maximum EUT RF output power, the minimum separation distance, r =20cm, as well as the gain of the used antenna is 0.0dBi, the RF power density can be obtained. Modulation Type Output power Antenna Gain (dBi) Antenna Gain (linear) MPE (mW/cm 2 ) MPE Limits (mW/cm 2 ) dBm mW 5.8GWIFI ANT1 15.0 31.6228 2.5 1.7783 0.0112 1.0000 Modulation Type Output power Antenna Gain (dBi) Antenna Gain (linear) MPE (mW/cm 2 ) MPE Limits (mW/cm 2 ) dBm mW 5.8GANT2 15.0 31.6228 2.5 1.7783 0.0112 1.0000 Remark: 1. Output power (Peak) including turn-up tolerance; 2. MPE evaluate distance is 20cm from user manual provide by manufacturer. 7. Conclusion The measurement results comply with the FCC Limit per 47 CFR 2.1091 for the uncontrolled RF Exposure of mobile device. ----------------THE END OF REPORT---------------

Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn FCC PART 15 SUBPART C TEST REPORT FCC PART 15 SUBPART E 15.407 Report Reference No. ..................... : FCC ID. ............................................ : CTA22072700301 2AADS-NERO-WSA Compiled by ( position+printed name+signature) .. : File administrators Kevin Liu Supervised by ( position+printed name+signature) .. : Project Engineer Kevin Liu Approved by ( position+printed name+signature) .. : RF Manager Eric Wang Date of issue ..................................... : Aug. 12, 2022 Testing Laboratory Name .............. : Shenzhen CTA Testing Technology Co., Ltd. Address ............................................ : Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Applicant’s name ............................ : OSD Audio.Inc Address ............................................ : 775 Columbia street, Brea, CA92821 Test specification ...........................: Standard ........................................... : FCC Part 15 Subpart E 15.407 TRF Originator .................................. : Shenzhen Global Test Service Co.,Ltd. Shenzhen CTA Testing Technology Co., Ltd. All rights reserved. This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen CTA Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen CTA Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Test item description .....................: Wireless Subwoofer Transmitter/Receiver Kit Trade Mark ....................................... : OSD AUDIO Manufacturer .................................... : OSD Audio.Inc Model/Type reference....................... : NERO-WSA Listed Models .................................. : N/A Modulation ....................................... : GFSK Frequency .......................................... 5725MHz-5850MHz Ratings ............................................. : DC 6V From external circuit Result................................................ : PASS Report No.: CTA22072700301 Page 2 of 33 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn T E S T R E P O R T Equipment under Test : Wireless Subwoofer Transmitter/Receiver Kit Model /Type : NERO-WSA Serial Models : N/A Applicant : OSD Audio.Inc Address : 775 Columbia street, Brea, CA92821 Manufacturer : OSD Audio.Inc Address : 775 Columbia street, Brea, CA92821 Test Result: PASS The test report merely corresponds to the test sample. It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: CTA22072700301 Page 3 of 33 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn Contents 1 T E S T S T A N D A R D S ................................................................. 4 2 S U M M A R Y ............................................................................ 5 2.1 General Remarks 5 2.2 Product Description 5 2.3 Equipment Under Test 5 2.4 Short description of the Equipment under Test (EUT) 5 2.5 EUT operation mode 5 2.6 Block Diagram of Test Setup 6 2.7 Related Submittal(s) / Grant (s) 6 2.8 Modifications 6 3 T E S T E N V I R O N M E N T .............................................................. 7 3.1 Address of the test laboratory 7 3.2 Test Facility 7 3.3 Environmental conditions 7 3.4 Test Description 8 3.5 Statement of the measurement uncertainty 8 3.6 Equipments Used during the Test 9 4 T E S T C O N D I T I O N S A N D R E S U L T S ........................................... 10 4.1 AC Power Conducted Emission 10 4.2 Radiated Emissions 13 4.3 Maximum Conducted Average Output Power 19 4.4 Power Spectral Density 21 4.5 Minimum Emission Bandwidth (6dB Bandwidth) 24 4.6 Frequency Stability 26 5 T E S T S E T U P P H O T O S O F T H E E U T ......................................... 28 6 P H O T O S O F T H E E U T ........................................................... 29 Report No.: CTA22072700301 Page 4 of 33 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 1 T E S T S T A N D A R DS The tests were performed according to following standards: FCC Rules Part 15 Subpart E—Unlicensed National Information Infrastructure Devices ANSI C63.10-2013: American National Standard for Testing Unlicensed Wireless Devices KDB789033 D02: General UNII Test Procedures New Rules v01r02 Report No.: CTA22072700301 Page 5 of 33 Shenzhen CTA Testing Technology Co., Ltd. Room 106, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao’an District, Shenzhen, China Tel:+86-755 2322 5875 E-mail:[email protected] Web:http://www.cta-test.cn 2 S U M M A R Y 2.1 General Remarks Date of receipt of test sample : Jun. 01, 2022 Testing commenced on : Jun. 01, 2022 Testing concluded on : Aug. 12, 2022 2.2 Product Description Product Description: WiFi Repeater Model: NERO-WSA Power supply: AC 120V 60Hz Adapter: DC 6V From external circuit Adapter information: Mode…

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FCC ID: 2AADS-NERO-WSA NERO-WSA Test Setup Photos of the EUT Conduction radiation radiation H