2BESN-SPL-X18Powered Subwoofer

SPL-X SERIES H I G H P E R F O R M A N C E S U B W O O F E R MANUAL EN / DE SPL-XSPL-X Danke, dass Sie sich für einen Subwoofer von Velodyne Acoustics entschieden haben! Unsere Leidenschaft für leistungsstarke, verzerrungsarme Bässe ist die treibende Kraft hinter unseren Produkten. An diesem Subwoofer in zeitlos schönem Industriedesign mit viel technischer Finesse werden Sie lange Freude haben. Wir freuen uns, das Klangerlebnis von Velodyne Acoustics zu Ihnen nach Hause zu bringen. Fortsetzung auf Seite 39 Thank you for purchasing a Velodyne Acoustics subwoofer! Our passion for powerful, low distortion bass is the driving force behind our products. You will enjoy this subwoofer in a timelessly beautiful industrial design with lots of technical finesse for a long time. We‘re excited to bring the Velodyne Acoustics sound experience into your home. Continued on page 5 What‘s in the box? 1x SPL-X Subwoofer 1x Extra heavy-duty, high-current 2 m power cord 1x Quick Start Guide 1x External Calibrated Microphone, 5 m cable with 3,5 mm minjack • After purchase, please check if the delivered subwoofer is complete and undamaged. If the unit is damaged, do not use the item and contact our service department. • Please keep the original packaging (including foam inlays) during the warranty period. Lieferumfang 1x SPL-X Subwoofer 1x Extra starkes, hochstromfähiges 2 m langes Kaltgerätekabel 1x Quick Start Guide 1x Externes kalibriertes Mikrofon, 5 m Kabel mit 3,5 mm-Klinke. • Prüfen Sie nach dem Kauf, ob der gelieferte Subwoofer vollständig und unbeschädigt ist. Wenn das Gerät Schäden aufweist, nehmen Sie den Artikel bitte nicht in Betrieb und kontaktieren Sie unseren Service. • Bitte bewahren Sie die OVP (inklusive Schaumstoff-Inlays) während der Garantiezeit auf. Meister der tiefen Töne Seit über 40 Jahren treibt Velodyne Acoustics die Entwicklung des Subwoofer- Konzepts mit innovativen Technologien voran. Kein anderer Hersteller hält so viele Patente im Subwoofer-Bau und jedes dieser Patente steht ganz im Dienste der perfekten Tieftonwiedergabe für Musik, Games und Filme. Masters of low frequencies Velodyne Acoustics has been pioneering the development of subwoofer technologies for over 40 years. No other manufacturer holds as many patents in subwoofer engineering and each of these patents is dedicated to achieving the perfect low frequency reproduction for music, games and movies. SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH 5 SPL-X Prepare for installation Placement Rear panel connection Stereo connection LFE connection High-level connection Interconnect cables Care of your subwoofer Protection circuitry Important safety instructions06 - 08 09 09 10 - 11 14 15 16 17 20 20 TABLE OF CONTENTS Troubleshooting and service Velodyne Acoustics AutoEQ SUB APP Specifications 20 20 - 21 22 - 30 EU - Declaration of conformity 31 - 35 XLR connection 36 Daisy-Chain connection18 - 19 Auto EQ via Rear Panel 12 - 13 SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH 67 Caution To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. Refer servicing to qualified service personnel. The lightning flash with arrowhead symbol is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the subwoofer. IMPORTANT SAFETY INSTRUCTIONS 1. Read Instructions — All safety and operating instructions should be read before the product is operated. 2. Retain Instructions — The safety and operating instructions should be retained for future reference. 3. Heed Warnings — All warnings on the product and in the operating instructions should be adhered to. 4. Follow Instructions — All operating and use instructions should be followed. 5. Water and Moisture — The product should not be used near water — for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool or the like. 6. Carts and Stands — The product should be used only with a cart or stand recommended by the manufacturer. 7. Wall or Ceiling Mounting — The product should be mounted to a wall or ceiling only as recommended by the manufacturer. 8. Ventilation — The product should be situated so that its location or position does not interfere with its proper ventilation. For example, the product should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or placed in a built-in installation such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. 9. Power — The mains plug is used as disconnect device, the disconnect device shall remain readily operable. 10. Temperature — The equipment shall be used at maximum 35 degree C ambient temperature. 11. Earth — This equipment must be supplied from a power system providing a PROTECTIVE EARTH Connection and having a neutral connection, which can be reliable identified. 12. Heat — The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products that produce heat. 13. Power Sources — The product should be connected to a power supply only of the type described in the operating instructions or as marked on the product. 14. Grounding or Polarization — This product may be equipped with a polarized alternating-current line plug (a plug having one blade wider than the other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not bypass the safety purpose of the polarized plug. 15…

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Rev 1/26/2023 Velodyne Acoustics GmbH Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2026-05-06 FCC ID: 2BESN-SPL-X18 Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Velodyne Acoustics GmbH certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Velodyne Acoustics GmbH certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Velodyne Acoustics GmbH certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Applicant: Velodyne Acoustics GmbH Address: Alsterkrugchaussee 435, 22335 Hamburg, Germany Contact Person: Thomas Wolff Tel.: (0)40 - 238 307 880 Email: [email protected] Sincerely, Signature:

Attestation Statements Date: 2026-05-06 TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for(FCC ID: 2BESN-SPL-X18) Velodyne Acoustics GmbH, the undersigned, hereby authorize HOPEK CORPORATION INC to act as our designated agent for service of process, Velodyne Acoustics GmbH accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. HOPEK CORPORATION INC accepts the responsibility to act as designated agent for service of process. Applicant Information： Company name: Velodyne Acoustics GmbH Contact Name: Thomas Wolff Address: Alsterkrugchaussee 435, 22335 Hamburg, Germany Telephone No: (0)40 - 238 307 880 Email: [email protected] FRN: 0034809236 Signature: Thomas Wolff Agent Information: Company Name: HOPEK CORPORATION INC Address:16755 Coyote Bush Dr Unit 84, San Diego, CA 92127 United States FRN: 0034562900 Contact Name: Yangyang Xu Telephone No: 561-875-9826 Email: [email protected] Signature: Yangyang Xu

Velodyne Acoustics GmbH Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: May 8, 2026 Subject; Request for Confidentiality FCC ID: 2BESN-SPL-X18 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure SOFTWARE SECURITY REQUIREMENTS FOR U-NII DEVICES In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Thomas Wolff Title: Sales representative

Effective Date: April 2, 2020 QSF 7.6.4-8 – Agent Authorization Letter Template Page 1 of 1 Revision Date: Revision: 0 Velodyne Acoustics GmbH Date：2026-05-06 Product Model Number: SPL-X 18, SPL-X 15 FCC ID：2BESN-SPL-X18 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: • Testing • Approval applications and procedures We declare that QAI Laboratories Ltd. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by QAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. Signature: By: Thomas Wolff Contact Listed on FCC Wesbite Title: Sales representative Email: [email protected] On behalf of: Velodyne Acoustics GmbH

Velodyne Acoustics GmbH Declaration Letter of Model Difference Date: 2026-05-06 FCC ID: 2BESN-SPL-X18 Tested Model Number: SPL-X 18 Adding Model Number(s): SPL-X 15 All Adding Model Number(s) is/are same electrically identical as Tested Model Number. Only model name and color are different for market purpose. Yours Sincerely, Applicant: Velodyne Acoustics GmbH Address: Alsterkrugchaussee 435, 22335 Hamburg, Germany Contact Person: Thomas Wolff Tel.: (0)40 - 238 307 880 Email: [email protected] Sincerely, Signature:

Page 1 of 3 Report No.: LGT26A011 Appendix - External Photographs of EUT Constructional Details Photo 1 Photo 2 Page 2 of 3 Report No.: LGT26A011 Appendix - External Photographs of EUT Constructional Details Photo 3 Photo 4 Page 3 of 3 Report No.: LGT26A011 Appendix - External Photographs of EUT Constructional Details Photo 5 Photo 6

Label Model: SPL-X 18 FCC ID: 2BESN-SPL-X18 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.

Page 1 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 1 Photo 2 Page 2 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 3 Photo 4 Page 3 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 5 Photo 6 Page 4 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 7 Photo 8 Page 5 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 9 Photo 10 BT ANT Page 6 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 11 Photo 12 Page 7 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 13 Photo 14 Page 8 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 15 Photo 16 Page 9 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 17 Photo 18 Page 10 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 19 Photo 20 Page 11 of 11 Report No.: LGT26A011 Appendix - Internal Photographs of EUT Constructional Details Photo 21

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Page 1 of 8 EMF TEST REPORT Product Name: Powered Subwoofer Model Number: SPL-X 18, SPL-X 15 FCC ID: 2BESN-SPL-X18 Issued For : Velodyne Acoustics GmbH Alsterkrugchaussee 435, 22335 Hamburg, Germany Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT26A011HA03 Sample Received Date: Jan. 05, 2026 Date of Test: Jan. 05, 2026 ~ Feb. 10, 2026 Date of Issue: Apr. 24, 2026 Report No.: LGT26A011HA03 Page 2 of 8 TEST REPORT CERTIFICATION Applicant: Velodyne Acoustics GmbH Address: Alsterkrugchaussee 435, 22335 Hamburg, Germany Manufacturer: Dongguan Tristar Electronic Co., Ltd. Address: Building 1&2, No. 196, Tangxia Dongxing Road, Tangxia Town, Dongguan City, Guangdong Province, China. Zip code: 523710 Product Name: Powered Subwoofer Trademark: Velodyne Acoustics Model Number: SPL-X 18, SPL-X 15 Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC 47 CFR §2.1091 KDB 447498 D01 General RF Exposure Guidance v06 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT26A011HA03 Page 3 of 8 TABLE OF CONTENTS 1 . GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST LABORATORY 5 2 . FCC 47CFR §2.1091 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 EUT OPERATION CONDITION 7 2.4 CLASSIFICATION 7 2.5 TEST RESULT 8 Report No.: LGT26A011HA03 Page 4 of 8 Revision History Rev. Issue Date Revisions 00 Apr. 24, 2026 Initial Issue Report No.: LGT26A011HA03 Page 5 of 8 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: Powered Subwoofer Test Model Number: SPL-X 18 Series Number: SPL-X 15 Model Difference: Same back panel for SPL-X 15 and SPL-X 18, There are differences in the size. Frequency Bands: Bluetooth 2402-2480MHz Rating: Input: AC 100-240V 50/60Hz 1900W Hardware Version: N/A Software Version: N/A 1.2 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate: FCC Registration No.: 746540 CAB ID: CN0136 Report No.: LGT26A011HA03 Page 6 of 8 2. FCC 47CFR §2.1091 REQUIREMENT 2.1 TEST STANDARDS The limit for Maximum Permissible Exposure (MPE) specified in FCC 1.1310 is followed. The gain of the antennas used in the product is extracted from the Antenna data sheets provided and also the maximum total power input to the antenna is measured. Through the Friis transmission formula and the maximum gain of the antenna, we can calculate the distance, away from the product, where the limit of MPE is reached. Although the Friis Transmission formula is far field assumption, the calculated result of that is an over-prediction for near field power density. It is taken as worst case to specify the safety range. 2.2 LIMIT According to FCC 1.1310: The criteria listed in the following table shall be used to evaluate the environmental impact of the human exposure to radio-frequency (RF) radiation as specified in 1.1307 (b) Limits for Maximum Permissible Exposure (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm²) Limits for Occupational / controlled Exposures 0.3-3.0 614 1.63 *(100) 3.0-30 1842/f 4.89/f *(900/f 2 ) 30-300 61.4 0.163 1.0 300 - 1500 -- -- F/300 1500 – 100000 -- -- 5.0 Limits for General population / Uncontrolled Exposure 0.3-1.34 614 1.63 *(100) 1.34-30 824/f 2.19/f *(180/f 2 ) 30-300 27.5 0.073 0.2 300 - 1500 -- -- F/1500 1500 – 100000 -- -- 1.0 F= Frequency in MHz * = Plane-wave equivalent power density. Friss Formula Friss Transmission Formula: Pd = (Pout * G) / (4*pi*r²) Where Pd = power density in mW/cm² Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = Distance between observation point and the center of radiator in cm If we know the maximum gain of the antenna and the total output power to the antenna, through calculation, we will know MPE value at distance 20cm. Report No.: LGT26A011HA03 Page 7 of 8 2.3 EUT OPERATION CONDITION EUT was enabled to transmit and receive at lowest, middle and highest channels. 2.4 CLASSIFICATION The antenna of this product, under normal use condition, is at least 20cm away from the body of the user. Warning statement to the user for keeping at least 20cm or more separation distance from the antenna should be included in the User manual. So, this device is classified as Mobile device. Report No.: LGT26A011HA03 Page 8 of 8 2.5 TEST RESULT Turn up Result Mode Turn up Power BT-GFSK -6.5±1dBm BT-π/4-DQPSK -5.5±1dBm BT-8DPSK -5±1dBm BLE 1M-GFSK -1±1dBm BLE 2M-GFSK -1±1dBm The MPE result of worst mode: RF Function Frequency (MHz) Max Turn up Power (dBm) Max Turn up Power (mW) ANT Gain (dBi) ANT Gain (gain of antenna in linear scale) Power Density (mW/cm²) Limit (mW/cm²) Ratio Result BLE 2440 0.00 1.00 0 1.00 0.000 1 0.000 Pass BT 2441 -4.00 0.40 0 1.00 0.000 1 0.000 Pass Note: 1. The RF Exposure is less than the limit, complies with the exemption requirements. ※※※※※END OF THE REPORT※※※※※

1. Antenna Description Antenna plate PCB antenna Market name/Model name SPL-X 12 Antenna Max. Gain 0dBi Frequency Range 2400.0-2480.0MHz Connect Type Integer antenna VSWR 1.1 Manufacturer: Dongguan Tristar Electronic Co., Ltd. Address: Building 1&2, No. 196, Tangxia Dongxing Road, Tangxia Town, Dongguan City, Guangdong Province, China. Zip code: 523710 2. Picture of antenna Length=15mm Width1=5.3mm Width2=3.1mm 3. Antenna Radiation Pattern Radiation pattern--2.400GHz Total Average Gain: -0.49dBi Phi 0 45 90 135 180 235 270 315 Gain -1.08 -0.59 -0.76 -0.73 -0.94 -0.49 -1.30 -1.11 Radiation pattern--2.440GHz Total Average Gain: -0.24dBi Phi 0 45 90 135 180 235 270 315 Gain -0.64 -0.25 -0.46 -0.47 -0.54 -0.24 -0.96 -0.72 Radiation pattern--2.480GHz Total Average Gain: 0dBi Phi 0 45 90 135 180 235 270 315 Gain -0.43 -0.02 -0.27 -0.38 -0.33 0.00 -0.80 -0.65

The test report is effective only with both signature and specialized stamp. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report only apply to the tested sample. Shenzhen LGT Test Service Co., Ltd. Tel: 0755-89668180 E-mail:[email protected] Web: www.lgt-cert.com Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Page 1 of 74 RF TEST REPORT Product Name: Powered Subwoofer Model Number: SPL-X 18, SPL-X 15 FCC ID: 2BESN-SPL-X18 Issued For : Velodyne Acoustics GmbH Alsterkrugchaussee 435, 22335 Hamburg, Germany Issued By : Shenzhen LGT Test Service Co., Ltd. Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Report Number: LGT26A011RF05 Sample Received Date: Jan. 05, 2026 Date of Test: Jan. 05, 2026 ~ Feb. 10, 2026 Date of Issue: Apr. 24, 2026 Report No.: LGT26A011RF05 Page 2 of 74 TEST REPORT CERTIFICATION Applicant: Velodyne Acoustics GmbH Address: Alsterkrugchaussee 435, 22335 Hamburg, Germany Manufacturer: Dongguan Tristar Electronic Co., Ltd. Address: Building 1&2, No. 196, Tangxia Dongxing Road, Tangxia Town, Dongguan City, Guangdong Province, China. Zip code: 523710 Product Name: Powered Subwoofer Trademark: Velodyne Acoustics Model Number: SPL-X 18, SPL-X 15 Sample Status: Normal APPLICABLE STANDARDS STANDARD TEST RESULTS FCC Part 15.247, Subpart C ANSI C63.10-2020 PASS Prepared by: Approved by: Zane Shan Vita Li Engineer Technical Director Report No.: LGT26A011RF05 Page 3 of 74 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST LABORATORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 FREQUENCY HOPPING SYSTEM REQUIREMENTS 10 2.4 TABLE OF PARAMETERS OF TEST SOFTWARE SETTING 12 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 12 2.6 EQUIPMENTS LIST 13 3. EMC EMISSION TEST 15 3.1 CONDUCTED EMISSION MEASUREMENT 15 3.2 RADIATED EMISSION MEASUREMENT 19 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 30 4.1 LIMIT 30 4.2 TEST PROCEDURE 30 4.3 TEST SETUP 30 4.4 EUT OPERATION CONDITIONS 31 4.5 TEST RESULTS 31 5. NUMBER OF HOPPING CHANNEL 32 5.1 LIMIT 32 5.2 TEST PROCEDURE 32 5.3 TEST SETUP 32 5.4 EUT OPERATION CONDITIONS 32 5.5 TEST RESULTS 32 6. AVERAGE TIME OF OCCUPANCY 33 6.1 LIMIT 33 6.2 TEST PROCEDURE 33 6.3 TEST SETUP 33 6.4 EUT OPERATION CONDITIONS 33 6.5 TEST RESULTS 33 7. HOPPING CHANNEL SEPARATION MEASUREMEN 34 7.1 LIMIT 34 7.2 TEST PROCEDURE 34 Report No.: LGT26A011RF05 Page 4 of 74 7.3 TEST SETUP 34 7.4 EUT OPERATION CONDITIONS 34 7.5 TEST RESULTS 34 8. BANDWIDTH TEST 35 8.1 LIMIT 35 8.2 TEST PROCEDURE 35 8.3 TEST SETUP 35 8.4 EUT OPERATION CONDITIONS 35 8.5 TEST RESULTS 35 9. OUTPUT POWER TEST 36 9.1 LIMIT 36 9.2 TEST PROCEDURE 36 9.3 TEST SETUP 36 9.4 EUT OPERATION CONDITIONS 36 9.5 TEST RESULTS 36 10. ANTENNA REQUIREMENT 37 10.1 STANDARD REQUIREMENT 37 10.2 EUT ANTENNA 37 APPENDIX I - TEST RESULTS 38 1. DUTY CYCLE 38 2. BANDWIDTH 42 3. MAXIMUM CONDUCTED OUTPUT POWER 49 4. CARRIER FREQUENCY SEPARATION 53 5. NUMBER OF HOPPING FREQUENCIES 55 6. TIME OF OCCUPANCY (DWELL TIME) 57 7. UNWANTED EMISSIONS IN NON-RESTRICTED FREQUENCY BANDS 60 APPENDIX II - MEASUREMENT PHOTOS 74 Report No.: LGT26A011RF05 Page 5 of 74 Revision History Rev. Issue Date Revisions 00 Apr. 24, 2026 Initial Issue Report No.: LGT26A011RF05 Page 6 of 74 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247, Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247(a)(1) Hopping Channel Separation PASS -- 15.247(a)(1)&(b)(1) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247(d) Conducted Spurious & Band Edge Emission PASS -- 15.247(a)(1)(iii) Number of Hopping Frequency PASS -- 15.247(a)(1)(iii) Dwell Time PASS -- 15.247(a)(1) Bandwidth PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2020. Report No.: LGT26A011RF05 Page 7 of 74 1.1 TEST LABORATORY Company Name: Shenzhen LGT Test Service Co., Ltd. Address: Room 205, Building 13, Zone B, Zhenxiong Industrial Park, No.177, Renmin West Road, Jinsha, Kengzi Street, Pingshan District, Shenzhen, Guangdong, China Accreditation Certificate: FCC Registration No.: 746540 CAB ID: CN0136 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 Occupied Channel Bandwidth ±0.46% 2 RF Output Power, Conducted ±0.71dB 3 Power Spectral Density, Conducted ±1.57dB 4 Unwanted Emission, Conducted ±0.63dB 5 Conducted emission ±2.80dB 6 All Emissions, Radiated (0.009-30MHz) ±2.16dB 7 All Emissions, Radiated (30MHz-1GHz) ±4.61dB 8 All Emissions, Radiated (1GHz-18GHz) ±5.49dB 9 Temperature ±0.5°C 10 Humidity ±2% 11 Duty Cycle ±2.3% Note: The measurement uncertainty is not included in the test result. Report No.: LGT26A011RF05 Page 8 of 74 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name: Powered Subwoofer Test Model Number: SPL-X 18 Series Number: SPL-X 15 Model Difference: Same back panel for SPL-X 15 and SPL-X 18, There are differences in the size. Channel List: Please refer to the Note 3. Bluetooth: Frequency:2402 – 2480 MHz Modulation: GFSK(1Mbps), π/4-DQPSK(2Mbps), 8DPSK(3Mbps) Antenna Type: PCB Antenna Antenna Gain: 0dBi Rating: Input: AC 100-240V 50/60Hz 1900W Hardware Version: N/A Software Version: N/A Connecting I/O Port(s): Please refer to the Not…

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Page 1 of 2 Report No.: LGT26A011 Appendix - Test Setup photos Set-up for Radiated Spurious Emission, Below 1GHz Set-up for Radiated Spurious Emission, Above 1GHz Page 2 of 2 Report No.: LGT26A011 Set-up for Conducted Emission