2BESN-SPL-X12Powered 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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SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH 2627 Adjustable Slope Settings The adjustable slope settings in the app enhance sound quality by allowing precise control over the crossover transition. This ensures optimal integration of the subwoofer with the room acoustics and personal listening preferences. In the Crossover section, the slope can be individually adjusted for three parameters: • Crossover • Subsonic Filter • Output HighPass Filter To adjust the slope for any of these parameters: 1. Tap the corresponding slope control to activate the adjustment mode. 2. The slope adjustment section will then link to the selected frequency parameter. 3. Use the selection box at the bottom to choose a slope value of 12, 24, 36, or 48 dB/octave. 4. The selected value is displayed in a green indicator box above the adjustment field. This flexibility allows for precise tuning of the frequency response, ensuring seamless integration into your sound system. Manual EQ 1. Manual EQ – Allows you to manually adjust the Frequency, Gain and Q-factor of 6 independent PEQs. 2. Flat button – If you hit this button all PEQ are set into neutral. Note: If the EQ-curve is already set, it will be the new neutral. 3. By hitting any blue dot on the frequency curve you are selecting one individual Equalizer, they can be individually adjusted from 20Hz to 200 Hz by sliding left to right on the frequency curve graph. After selecting one dot, you can also change the settings by hitting the “Set” button. 4. PEQ setting – For all 6 individual PEQ you can set the gain to +6db max. to -18db, frequency from 20 Hz to 200 Hz and the Q-factor from 0.1 to 15.0 SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH 2829 5. Preset – You are able to save up to 6 different EQ settings by hitting the save-button, then selecting a preset on the drop down menu and rename each individual preset, i.e. Cinema/Game/Jazz/Classic 6. Select Preset – By hitting the “SELECT” button, you can choose one of your presets by using the drop down menu, followed by the “confirm” button, the preset will be uploaded into SPL-X subwoofer DSP. Using Auto EQ Auto EQ is used to compensate and correct acoustic room anomalies that can cause inferior bass performance. Auto EQ takes a series of measurements, makes complex calculations, and applies those acoustic corrections - all from the comfort of your listening area. 1. To start the Auto EQ process, press the “Auto EQ” button in the lower menu, it will appear in blue when active. The app screen will show three curves on the graph, original, corrected and target curve. 2. Place the measurement microphone approximately 50 cm (20 inches) away from the subwoofer. The microphone should be pointed upward, not directly at the subwoofer. Press the SCAN button. The subwoofer will now perform a sweep, measuring the frequency response. This initial measurement generates the target curve (yellow), which is also visible in the app. 3. Move the MIC to the listening position facing the speaker. Hit the “Start” Button, now the SPL-X is running several test tone sweeps and automatically setting the internal DSP to have the room correction applied. Note: You can also start this automatic room correction by pressing the physical button on the SPL-X back panel without using the AutoEQ SUB app. Standby Mode The Input Sensitivity controls the minimum input level at which the subwoofer wakes from standby mode or enters standby mode. Similarly, the standby time setting allows you to adjust the duration after which the subwoofer will go into standby mode if no signal is detected. This helps prevent unwanted shutdowns during home theater use, ensuring the subwoofer remains ready for action during quiet scenes. SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH 3031 EQ- and Factory Reset The corrected Auto-EQ curve, stored in the subwoofer’s DSP, can be reset to the neutral setting through a Factory Reset. Factory Reset: This process is performed in the app. When the subwoofer is connected to the app, simply press the Velodyne Acoustics logo until the “Restore Factory Settings” prompt appears. Confirm by selecting “Yes”, and the reset will be completed, returning the subwoofer to its neutral default setting. A quick press of the Velodyne Acoustics symbol will display the current software and firmware versions of the subwoofer and the app in use. SPECIFICATIONS SPL-X 10“ Woofer 10” high excursion triple vented basket driver with carbon fibre cone, Dual Spider Four Layer 3”/76mm Voicecoil Triple ferrite magnet motor Cabinet design HDF Closed Box, with extended Bracing Amplifier: Class D 1000Watt RMS Amplifier: Class D 1500Watt RMS Peak short term Frequency Response +/-10dB, 18-300Hz Frequency Response +/-3dB, 28-250Hz Low Pass Crossover 30-200 adjustable 12/24/36/48 dB octave Delay "Adjustable 0ms-500ms" Input Unbalanced RCA stereo, LFE Balanced XLR stereo, LFE High level stereo Output Unbalanced RCA Stereo/LFE Balanced XLR stereo, LFE Grille Black fabric Mesh, MDF frame Auto Power on Yes, adjustable sensitivity Power Selector Auto / Trigger / On Voltage 115V - 230V Size W/H/D incl. rubber feet and connectors 360mm/340mm/440mm Weight 30kg Shipping Weight 33kg Shipping size W/H/D 460mm/460mm/550mm SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH SPL-XMANUALWWW.VELODYNEACOUSTICS.COM ENGLISH 3233 SPECIFICATIONS SPL-X 12“ Woofer 12” high excursion triple vented basket driver with carbon fibre cone, Dual Spider Four Layer 4”/102mm Voicecoil Triple ferrite magnet motor Cabinet design HDF Closed Box, with extended Bracing Amplifier: Class D 1200Watt RMS Amplifier: Class D 1700Watt Peak short term Frequency Response +/-10dB, 15-280Hz Frequency Response +/-3dB, 25-200Hz Low Pass Crossover 30-200 adjustable 12/24/36/48 dB octave Delay „Adjustable 0ms-500ms“ Input Unbalanced RCA stereo, LFE Balanced XLR stereo, LFE High level stereo…

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SPL-XBEDIENUNGSANLEITUNGWWW.VELODYNEACOUSTICS.COM DEUTSCH SPL-XBEDIENUNGSANLEITUNGWWW.VELODYNEACOUSTICS.COM DEUTSCH 5253 DAISY-CHAIN VERBINDUNG 1800W In compliance with EC-RoHS and China-RoHS Designed and engineered in Germany, assembled in China FCC ID:2BESN-XXXXXXX CAN ICES-003(B)/NMB-003(B) L/LFE L/LFE R FREQUENCY LOW PASS +-- RL Pre-Amplifier 1800W In compliance with EC-RoHS and China-RoHS Designed and engineered in Germany, assembled in China FCC ID:2BESN-XXXXXXX CAN ICES-003(B)/NMB-003(B) L/LFE L/LFE R FREQUENCY LOW PASS 1800W In compliance with EC-RoHS and China-RoHS Designed and engineered in Germany, assembled in China FCC ID:2BESN-XXXXXXX CAN ICES-003(B)/NMB-003(B) L/LFE L/LFE R FREQUENCY LOW PASS +-- RL Pre-Amplifier 1800W In compliance with EC-RoHS and China-RoHS Designed and engineered in Germany, assembled in China FCC ID:2BESN-XXXXXXX CAN ICES-003(B)/NMB-003(B) L/LFE L/LFE R FREQUENCY LOW PASS STEREO DAISY-CHAIN VERBINDUNG XLR DAISY-CHAIN VERBINDUNG HIGH PASS FILTER Ist der High Pass Filter bei einer Daisy-Chain Verbindung in der App aktiviert, kann ein vom Bass befreites Signal an den Verstärker und somit an die Hauptlautsprecher weitergegeben werden. Hierdurch müssen die Speaker keine Bassfrequenzen wiedergeben, was deutliche klangliche Vorteile bringt. 1800W In compliance with EC-RoHS and China-RoHS Designed and engineered in Germany, assembled in China FCC ID:2BESN-XXXXXXX CAN ICES-003(B)/NMB-003(B) L/LFE L/LFE R FREQUENCY LOW PASS +-- RL Pre-Amplifier Amplifier Main SpeakerMain Speaker 1800W In compliance with EC-RoHS and China-RoHS Designed and engineered in Germany, assembled in China FCC ID:2BESN-XXXXXXX CAN ICES-003(B)/NMB-003(B) L/LFE L/LFE R FREQUENCY LOW PASS +-- RL Pre-Amplifier Amplifier Main SpeakerMain Speaker SPL-XBEDIENUNGSANLEITUNGWWW.VELODYNEACOUSTICS.COM DEUTSCH SPL-XBEDIENUNGSANLEITUNGWWW.VELODYNEACOUSTICS.COM DEUTSCH 5455 VERBINDUNGSKABEL Bei der Installation Ihres Velodyne Acoustics SPL-X Subwoofers über die Line-Level-Anschlüsse sollten Sie immer abgeschirmte Cinch-Kabel verwenden. Derzeit sind viele qualitativ hochwertige Kabel erhältlich. Es wird empfohlen, die Kabellänge so kurz wie möglich zu halten, um mögliche Rauschprobleme zu vermeiden. Verwenden Sie bei Anschlüssen auf Lautsprecherebene ein hochwertiges Lautsprecherkabel, das gut mit den Anschlüssen zusammenpasst. Achten Sie darauf, dass keine losen Litzen oder ausgefransten Drähte vorhanden sind, die zu einem Kurzschluss führen können, der Ihre Geräte beschädigen könnte. Beachten Sie, dass extrem große Kabel aufgrund der geringen Stromaufnahme bei dieser Art von Verbindung nicht erforderlich sind. Bitte beachten Sie, dass extrem dicke Kabel möglicherweise nicht richtig in die Klemmen passen, was zu einer schlechten Verbindung und möglichen Kurzschlüssen führt. PFLEGE DES SUBWOOFERS Was die Pflege Ihres Velodyne Acoustics-Subwoofers betrifft, so genügt es, die Oberfläche abzustauben oder zu reinigen, um die Optik zu erhalten. Wir empfehlen Ihnen, bei der Reinigung des Gehäuses keine scharfen Reinigungsmittel oder Chemikalien zu verwenden. Die Oberfläche des Gehäuses kann durch die Verwendung von Scheuermitteln, Waschmitteln oder Reinigungslösungen beschädigt werden. Wir empfehlen dringend, das Gehäuse nur mit einem feuchten Tuch zu reinigen. Unter normalen Bedingungen kann Ihr Subwoofer ohne Probleme ständig eingeschaltet bleiben. Das Gerät ist mit einer Signalerkennungsschaltung ausgestattet, die das Gerät automatisch einschaltet, wenn ein Signal an den Eingängen anliegt, und es nach einigen Minuten ausschaltet, wenn kein Signal mehr an den Eingängen anliegt. SCHUTZSCHALTUNG Ihr Velodyne Acoustics Subwoofer ist mit Schaltkreisen ausgestattet, die maximale Leistung bei höchster Zuverlässigkeit bieten. Das Gerät ist geschützt gegen: 1. Überhitzung des Verstärkers. 2. Spannungsabfall im Stromnetz. In diesem Fall sollten Sie die Lautstärke reduzieren oder das Gerät ausschalten, bis wieder normale Betriebsbedingungen herrschen. Möglicherweise sollten Sie das Gerät auch an eine andere Steckdose anschließen, da sich ein Abfall der Netzspannung vor allem unter anstrengenden Bedingungen bemerkbar macht und zu einer zeitweiligen Abschaltung des Geräts führen kann. FEHLERSUCHE UND SERVICE Bitte überprüfen Sie alle Systeme und Ihre Verbindungen und Einstellungen, bevor Sie sich an ein autorisiertes Service-Center wenden. Nachfolgend finden Sie eine einfache Anleitung zur Fehlersuche, die Sie unterstützen soll. Vergewissern Sie sich, dass das Gerät eingesteckt ist und die verwendete Steckdose aktiv ist. 1. Ist der Netzschalter eingeschaltet? 2. Empfängt das Gerät ein Eingangssignal von Ihrer Quelle? 3. Sind alle Regler (Lautstärke, Frequenzweiche, Phase usw.) richtig eingestellt? 4. Wenn das Gerät mit hohen Pegeln betrieben wurde, ist möglicherweise eine der Schutzschaltungen aktiviert. Hat sich der Verstärker überhitzt? 5. Vergewissern Sie sich, dass die Lautsprecherkabel vollständig in die Federklemmen eingesteckt sind und dass sich keine Drähte von einem Anschluss zum anderen berühren. Wenn die Schutzschaltung aktiv ist, kann das Gerät ein- und ausgeschaltet werden, bis die Betriebsparameter wieder normal sind. Unter schwerwiegenderen Bedingungen kann sich das Gerät vollständig abschalten. Nach dem Abkühlen sollte das Gerät wieder normal funktionieren. Es kann jedoch erforderlich sein, das Gerät aus- und wieder einzuschalten, um es zurückzusetzen, bevor es wieder normal funktioniert. Die folgenden Bedingungen erfordern eine Wartung durch einen qualifizierten Techniker: 1. Das Netzkabel ist beschädigt oder scheint beschädigt zu sein. 2. Das Gerät scheint nicht normal zu funktionieren oder weist eine deutliche Veränderung der Leistung auf. 3. Das Gerät ist mit Wasser in Berührung gekommen. 4. Ein Teil des Gehäuses oder der Schaltkreise ist physisch beschädigt. SPL-XBEDIENUNGSANLEITUNGWWW.VELODYNEACOUSTICS.COM DEUTSCH SPL-XBEDIENUNGSANLEITUNGWWW.VELODYNEACOUSTICS.COM DEUTSCH 5657 SERVICE Was ist die Ü…

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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: 2026-02-11 FCC ID: 2BESN-SPL-X12 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: 2026-02-11 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-X12) 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

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

Velodyne Acoustics GmbH Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: March 4, 2026 Subject; Request for Confidentiality FCC ID: 2BESN-SPL-X12 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：2026-02-11 Product Model Number: SPL-X 12, SPL-X 10 FCC ID：2BESN-SPL-X12 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: 2026-02-11 FCC ID: 2BESN-SPL-X12 Tested Model Number: SPL-X 12 Adding Model Number(s): SPL-X 10 All Adding Model Number(s) is/are same electrically identical as Tested Model Number. Same back panel for SPL-X 10 and SPL-X 12，There are differences in the size. 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:

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Label Model: SPL-X 12 FCC ID: 2BESN-SPL-X12 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 6 Report No.: LGT26A012 Appendix - Photographs of EUT Constructional Details Photo 1 Photo 2 Page 2 of 6 Report No.: LGT26A012 Appendix - Photographs of EUT Constructional Details Photo 3 Photo 4 Page 3 of 6 Report No.: LGT26A012 Appendix - Photographs of EUT Constructional Details Photo 5 Photo 6 Page 4 of 6 Report No.: LGT26A012 Appendix - Photographs of EUT Constructional Details Photo 7 Photo 8 ANT Page 5 of 6 Report No.: LGT26A012 Appendix - Photographs of EUT Constructional Details Photo 9 Photo 10 Page 6 of 6 Report No.: LGT26A012 Appendix - Photographs of EUT Constructional Details Photo 11

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 12, SPL-X 10 FCC ID: 2BESN-SPL-X12 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: LGT26A012HA03 Sample Received Date: Dec. 29, 2025 Date of Test: Dec. 29, 2025 ~ Feb. 10, 2026 Date of Issue: Feb. 10, 2026 Report No.: LGT26A012HA03 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 12, SPL-X 10 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.: LGT26A012HA03 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.: LGT26A012HA03 Page 4 of 8 Revision History Rev. Issue Date Revisions 00 Feb. 10, 2026 Initial Issue Report No.: LGT26A012HA03 Page 5 of 8 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name: Powered Subwoofer Test Model Number: SPL-X 12 Series Number: SPL-X 10 Model Difference: Same back panel for SPL-X 10 and SPL-X 12，There are differences in the size. Frequency Bands: Bluetooth 2402-2480MHz Rating: Input: AC 100-240V 50/60Hz 1250W 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.: LGT26A012HA03 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 …

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