2BRDB-XBXB-Wireless Subwoofer

Label&labellocation labellocation HVIN:XB

RFExposureevaluation Exposurecategory:Generalpopulation/uncontrolledenvironment EUTType:ProductionUnit DeviceType:MobileDevice ReferStandard:KDB447498D01GeneralRFExposureGuidancev06 FCCPart2§2.1091 FCCID:2BRDB-XB 1.Reference Accordingto§1.1307(b)(1),systemsoperatingundertheprovisionsofthissectionshallbe operatedinamannerthatensuresthatthepublicisnotexposedtoradiofrequencyenergy levelinexcessoftheCommission’sguidelines. Accordingto§1.1310and§2.1091RFexposureiscalculated. KDB447498D01:MobileandPortableDevicesRFExposureProceduresandEquipment AuthorizationPolicies 2.Limit LimitsforMaximumPermissibleExposure(MPE)/ControlledExposure Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) PowerDensity (mW/cm²) AveragingTime (minute) LimitsforOccupational/ControlledExposure 0.3–3.06141.63(100)*6 3.0–301842/f4.89/f(900/f 2 )*6 30–30061.40.1631.06 300–1500//f/3006 1500–100,000//56 LimitsforMaximumPermissibleExposure(MPE)/UncontrolledExposure Frequency Range(MHz) ElectricField Strength(V/m) MagneticField Strength(A/m) PowerDensity (mW/cm²) AveragingTime (minute) LimitsforOccupational/ControlledExposure 0.3–3.06141.63(100)*30 3.0–30824/f2.19/f(180/f 2 )*30 30–30027.50.0730.230 300–1500//f/150030 1500–100,000//1.030 F=frequencyinMHz *=Plane-waveequivalentpowerdensity 3.MPECalculationMethod PredicationofMPElimitatagivendistance Equationfrompage18ofOETBulletin65,Edition97-01 S=PG/4πR² Where:S=powerdensity P=powerinputtoantenna G=powergainoftheantennainthedirectionofinterestrelativetoanisotropicradiator R=distancetothecenterofradiationoftheantenna 4.Result AsdeclaredbytheApplicant,theEUTisawirelessdeviceusedinafixapplication,atleast 20cmfromanybodypartoftheuserornearbypersons;fromthemaximumEUTRFoutput power,theminimumseparationdistance,r=20cm,aswellasthegainseebelowtable,the RFpowerdensitycanbeobtained. Internal Identification AntennaIdentification inInternalphotos Antennatypeand antennanumber Operatefrequencyband Maximum antennagain Internal Antenna0 SKAAANT BowtieDipole Antenna 2403-2478MHz2.41dBi Freq. (MHz) Output Power (dBm) Targetpower W/tolerance (dBm) Maxtuneup power tolerance (dBm) Outputpower toantenna (mW) Ant Gain (dBi) Power Densityat R=20cm (mW/cm 2 ) Limit (mW/cm 2 )Result FSK 2403.510.5410.5±1.011.514.12542.410.04891Pass 2440.4 11.5611.0±1.012.015.84892.410.05491Pass 2477.3 13.5713.5±1.014.528.18382.410.09771Pass Note:Theestimationdistanceis20cm. 5.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1091fortheuncontrolled RFExposureofmobiledevice.

ReportNo.2026031738650907-00 LaboratoryAddress:Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,No.30of TangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710,People'sRepublicofChina Tel:0769-87182258E-mail:[email protected] ： www.keywaytest.com REV.00 Page 1 of 51 FCCPart15C&RSS-247TESTREPORT FCCID:2BRDB-XB IC:34372-XB Preparedfor: ElectrotecAudioInc Address: 17835NewhopeStreet,unitA,FountainValley,California, UnitedStates,92708 TradeName: SKAA E.U.T: XB-WirelessSubwoofer ModelNumber: XB Preparedby: KeywayTestingTechnology(Guangdong)Co.,Ltd. Address: Room2102,Building6,DongyiIntelligentEquipmentNew EnergyVehiclePark,No.30ofTangxiaDistrict,DongshenRoad, TangxiaTown,Dongguan,523710,People'sRepublicofChina Tel:86-769-87182258 Fax:86-769-87181058 ReportNo.: 2026031738650907-00 DateofTest:: Jan.07~Apr.24,2026 DateofReport: Apr.25,2026 ReportNo.2025121938953803-00 LaboratoryAddress:Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,No.30of TangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710,People'sRepublicofChina Tel:0769-87182258E-mail:[email protected] ： www.keywaytest.com REV.00 Page 2 of 51 Applicant: ElectrotecAudioInc Address: 17835NewhopeStreet,unitA,FountainValley,California,UnitedStates, 92708 Manufacturer: ElevenEngineeringIncorporated Address: 10150-100Street,Suite800Edmonton,AB,CanadaT5J0P6 E.U.T: XB-WirelessSubwoofer ModelNumber: XB TradeName: SKAA DateofReceipt: Jan.05,2026 DateofTest: Jan.07~Apr.24,2026 TestSpecification: FCCCFR47Part15Section15.247 RSS-247Issue4:July24,2025 ANSIC63.10-2020+Cor.1-2023+C63.10a-2024+ErratatoC63.10a- 2024 RSS-GENIssue5,Amendment2,February,2021 TestResult: Theequipmentundertestwasfoundtobecompliancewiththe requirementsofthestandardsapplied. IssueDate:Apr.25,2026 Testedby:Reviewedby:Authorizedby: BearXiong/EngineerBillyZeng/SupervisorCherryChen/Manager Abbreviations:OK/P=passedfail/F=failedN/A=notapplicableE.U.T=equipmentundertested ThisdevicedescribedabovehasbeentestedbyKeyway,andthetestresultsshowthattheequipmentundertest(EUT)isin compliancewiththeFCCrequirements.Anditisapplicableonlytothetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofKeyway,thisdocumentmaybealteredorrevised byKeyway,personalonly,andshallbenotedintherevisionofthedocument. ReportNo.2025121938953803-00 LaboratoryAddress:Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,No.30of TangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710,People'sRepublicofChina Tel:0769-87182258E-mail:[email protected] ： www.keywaytest.com REV.00 Page 3 of 51 RevisionRecord VersionChapterDateModifierRemark 002026.04.20 Original ReportNo.2025121938953803-00 LaboratoryAddress:Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark,No.30of TangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710,People'sRepublicofChina Tel:0769-87182258E-mail:[email protected] ： www.keywaytest.com REV.00 Page 4 of 51 Contents Page 1TESTSUMMARY..........................................................................................................................................................6 2TESTFACILITY............................................................................................................................................................7 3GENERALINFORMATION........................................................................................................................................8 3.1GENERALDESCRIPTIONOFE.U.T........................................................................................................................8 3.2CHANNELLIST.....................................................................................................................................................9 3.3TESTSETUPCONFIGURATION............................................................................................................................10 3.4TESTMODE........................................................................................................................................................10 4EQUIPMENTDURINGTEST...................................................................................................................................11 4.1EQUIPMENTSLIST..............................................................................................................................................11 4.2MEASUREMENTUNCERTAINTY..........................................................................................................................13 4.3DESCRIPTIONOFSUPPORTUNITS.......................................................................................................................14 5CONDUCTEDEMISSION..........................................................................................................................................15 5.1E.U.T.OPERATION.............................................................................................................................................15 5.2EUTSETUP........................................................................................................................................................15 5.3TESTSET-UP(BLOCKDIAGRAMOFCONFIGURATION)....................................................................................16 5.4MEASUREMENTPROCEDURE:.............................................................................................................................16 5.5CONDUCTEDEMISSIONLIMIT............................................................................................................................16 5.6MEASUREMENTDESCRIPTION............................................................................................................................16 5.7CONDUCTEDEMISSIONTESTRESULT................................................................................................................16 6RADIATEDSPURIOUSEMISSIONS......…

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AN5527-A1249 MODEL B-0 ANTENNA DATA SHEET Antenna VersionB-0 TypeBowtie Dipole Targeted Frequencies2.403 - 2.478 GHz Predicted Peak Directivity 3.33 dBi Predicted Peak Gain 2.41 dBi Efficiency78% 102225 Technical Specification Summary 20 360 Milimetres (mm) AN5527-A1177 AN5527-A1176 Antenna PCBcoax cable Bottom Solder Mask Bottom Silk Print Top Silk Print Top Copper Route (1 oz) Top Solder Mask FR-4 Bottom Copper Route (1 oz) Bottom Solder Mask Bottom Silk Print 1.0 mm PCB Layer Breakdown S11 and Return Loss 031126 AN5527-A1249 MODEL B-0 ANTENNA DATA SHEET ZY XZ XY Notes: 1. XY plane slice is not accurately depicted. The plane slice is actually a conical slice 15° off the XY plane 2. Measurements are in the absolute scale of the E-field Gain Pattern 2.40 GHzVerticalHoriz Ave Gain XY 0.770.42 Peak Gain XY 2.051.81 Total Gain XY 2.08 1.83 Ave Gain XZ 0.360.29 Peak Gain XZ1.92 0.35 Total Gain XZ 1.940.36 2.44 GHzVerticalHoriz Ave Gain XY 0.890.51 Peak Gain XY 2.051.83 Total Gain XY 2.07 1.86 Ave Gain XZ 0.380.29 Peak Gain XZ 1.940.36 Total Gain XZ 1.950.37 2.48 GHzVerticalHoriz Ave Gain XY 0.920.39 Peak Gain XY 2.111.79 Total Gain XY 2.13 1.81 Ave Gain XZ0.37 0.28 Peak Gain XZ 2.41 0.35 Total Gain XZ 2.420.36 YZ

KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com E.U.T: XB-WirelessSubwoofer ModelNumber: XB TradeName: SKAA SampleNumber: 33000260977 DateofReceipt: Jan.05,2026 DateofTest: Jan.08~Apr.24,2026 FCCID: 2BRDB-XB IC: 34372-XB A.1CONDUCTEDOUTPUTPOWER TestResult ModulationChannel Peak Output Power (dBm) Peak Output Power (mW) Max.Avg. Power (dBm) Limit (dBm) Result FSK 010.5411.32None 21 PASS 2411.5614.33NonePASS 4813.5722.77NonePASS ModulationChannel Peak Output Power (dBm) Peak Power Limit (dBm) Antenna Gain (dBi) EIRP (dBm) EIRP Limit (dBm) Max. Avg. Power (dBm) Result FSK 010.54 ≤21 2.4112.9536NonePASS 2411.56 ≤21 2.4113.9736NonePASS 4813.57 ≤21 2.4115.9836NonePASS Note:ISEDEIRP(dBm)=PeakOutputPower(dBm)+AntennaGain(dBi) KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com TestGraphs PeakOutputPower FSK_Channel00 PeakOutputPower FSK_Channel24 PeakOutputPower FSK_Channel48 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com A.299%BANDWIDTH TestResult ModulationChannel99%BW(MHz) FSK 002.3495 242.3833 482.2918 TestGraphs FSK_Channel0FSK_Channel24 FSK_Channel48 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com A.320DBBANDWIDTH TestResult ModulationChannel20dBBandwidth(MHz) FSK 002.322 242.329 482.343 TestGraphs FSK_Channel0FSK_Channel24 FSK_Channel48 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com A.4CARRIERFREQUENCIESSEPARATION TestResult ModulationChannelSeparation(MHz)Limit(MHz)Result FSK01.55421.548PASS FSK241.55571.553PASS FSK481.57171.562PASS TestGraphs FSK_Channel0FSK_Channel24 FSK_Channel48 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com A.5100KHZBANDWIDTHOFFREQUENCYBANDEDGEREQUIREMENT TestResult Non-Hopping ModulationChannel OOB Emission Frequency (MHz) OOB Emission Level (dBm) Limit (dBm) OverLimit (dB) Result FSK 0 2397.20-37.389-9.47-27.919PASS 2398.50-32.570-9.47-23.100PASS 2400.00-38.277-9.47-28.807PASS 2421150.2-42.693-8.35-34.343PASS 48 2483.50-34.555-6.24-28.315PASS 21573.4-42.987-6.24-36.747PASS Note:inputcompensationcoeffcient(dB)=CableLoss(dB) Hopping ModulationChannel OOB Emission Frequency (MHz) OOB Emission Level (dBm) Limit (dBm) OverLimit (dB) Result FSKHopping 2400.00-32.493-8.85-23.643PASS 2483.50-34.124-6.07-28.054PASS Note:inputcompensationcoeffcient(dB)=CableLoss(dB) TestGraphs OutOfBandEmission FSK_Channel0 SpuriousEmission FSK_Channel0 KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com OutOfBandEmission FSK_Channel24 SpuriousEmissions FSK_Channel24 OutOfBandEmission FSK_Channel48 SpuriousEmission FSK_Channel48 OutOfBandEmission(Left) FSK_ChannelHopping OutOfBandEmission(Right) FSK_ChannelHopping KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com A.6DWELLTIME TestResult ModulationChannel PulseWidth (ms) Numberof Pulsesin 19.6 seconds DwellTime (ms) Limit(ms)Result FSK CH0 (2403.5MHz) 4.70472338.69 <400 PASS CH24 (2440.4MHz) 4.72073344.56PASS CH48 (2477.3MHz) 4.62473337.55PASS TestGraphs PulseWidthNumberofPulsesin19.6seconds PulseWidthNumberofPulsesin19.6seconds PulseWidthNumberofPulsesin19.6seconds KeywayTestingTechnology(Guangdong)Co.,Ltd Room2102,Building6,DongyiIntelligentEquipmentNewEnergyVehiclePark, No.30ofTangxiaDistrict,DongshenRoad,TangxiaTown,Dongguan,523710, People'sRepublicofChina Telephone:+86(0)87182258www.keywaytest.com A.7NUMBEROFHOPPINGCHANNEL TestResult Mode Frequency (MHz) NumofHoppingFrequencies Verdict ANT1Limit FSKHOPP49>=15Pass TestGraphs LowEndSpectrumChannelHoppingPlot FSK HighEndSpectrumChannelHoppingPlot FSK