2AOCR-MD435902.1CH soundbar with subwoofer

G S - S B 61 2.1CH soundbar with built-in subwoofer Instructions Guide Contents Controls And Functions ----------------------------------------- 1-3 What’s In The Box? ---------------------------------------------- 4 Support --------------------------------------------------------------5 User Manual ------------------------------------------------------- 6-13 Using the AUX IN Cable ---------------------------------------6 Using the ARC Input ------------------------------------------- 7 Using the Optical Input --------------------------------------- 8 Using the MP3 Link Connection (Line In) ----------------- 9 Connecting to the Mains Supply -------------------------- 10 Using the Bluetooth Operation ---------------------------- 11 Using the USB Operation ------------------------------------ 12 Troubleshooting -------------------------------------------------- 13 Specifications ------------------------------------------------------ 14 Quick System Installation Guide ----------------------------- 15 Safety Information ----------------------------------------------- 16 Controls And Functions Side View/Control Buttons Back View 8. Optical Input 9. USB Input 10.HDMI (ARC) Input 5.DC Power Input 6.AUX-In Input 7.Line-In Input 1 Controls And Functions Remote Control 2 10.Power On/Off Switch the unit between on and Standby mode 11.Volume + Press to increase the volume 12.Back Step Use in AUX or Bluetooth mode to go back a track. 13.Play/Pause Press to play and pause 14.Volume - Press to decrease the volume 15.Bass Increase Press to increase the bass 16.EQ Press the button to adjust the equaliser. Press andholdthe button to turn the soundbar LED light on and off. 17.Bass Decrease Press to decrease the bass 18.MODE Press button repeatedly to switch between soundbar modes 19.Forward Step Use in AUX or Bluetooth mode to go forward a track 20.Treble Increase Press to increase the treble 21.Treble Decrease Press to decrease the treble 1018 11 12 19 13 14 15 20 16 17 21 Controls And Functions Using the Remote Control The remote control sensor at the front of the soundbar is sensitive to the remote control’s commands up to a maximum of 10 meters away and within a maximum arc of 30 degrees. Please note that the operating distance may vary depending on the brightness of the room. 3 201 Soundbar What’s In The Box? Box Contents 1.GS-SB61 Soundbar 2.Remote Control 3.Power Adapter x 1 4.AUX IN Cable 5.User Manual 6.3.5mm to 3.5mm Line In Cable 7.Optical Cable 1.GS-SB61 Soundbar 2.Remote 3. Power 4.AUX Cable Control Adapter 6. 3.5mm to 3.5mm Line In Cable 4 7.Optical Cable 5. User Manual Instructions Guide Support Thank you for your purchasing the GS-SB61 Soundbar Please follow the guidance of the manual to set up your new purchase and begin enjoying its features. Soundbar Hook Schematic 5 Instructions Guide Using the AUX IN Cable Use the AUX Stereo Audio Cable (included) to connect theTV’s stereo AUX (L/R)audio output socket. Connect the audio output cable of the soundbar via the‘AUX’ input sockets of the unit. Then pressMODEon the remote control (Rem.18) or press the Mode button on the unit to scroll to the AUX IN function. Turn on your television Troubleshooting:If you are not receiving a picture or encounteringinterference,pleaseensurethatthe AUXcableis being connected to‘output’AUX port on yourTV set.This will ensure that the sound is being exported correctly. If your TV does not have ‘output’ AUX port, please use an alternative connection method. AUX stereo audio cable Rear view of the unit 6 O P T I C A Instructions Guide Using the ARC Input You will need: An audio source with an ARC Audio Output and a ARC Audio cable (not included). Connect the ARC Audio cable to the ARC output on the audio source and to the ARC Input on the soundbar. Press the POWER button on the soundbar or POWER button directly on the remote control (Rem.10) to switch on the unit. Press the MODE button on the remote control (Rem.18) to switch to ARC mode or select the Mode button on main unit repeatedly to select th eARC mode. Using the native controls on your connected device, make sure the audio settings are set to ARC or HDMI Audio and are turned on. Audio from the connected audio source will now be played through the speakers. If you are using this device with a TV for the first time and there is no sound output,you may have the incorrect audio setting assigned on your TV. Please check your TV audio output setting is set to PCM/2-CH” ARCcable Rear view of the unit 7 ARC-IN O P T I C A L Instructions Guide Using the Optical Input Youwill need: An audio source with an Optical Audio Output and a Digital Optical Audio cable ( included). Connect the Digital Optical Audio cable to the optical output on the audio source and to the Optical Input on the soundbar. Press the POWER button on the soundbar or POWER button directly on the remote control (Rem.10) to switch on the unit. Press the MODE button on the remote control (Rem.18)to switch to Optical mode or select the Mode button on main unit repeatedly to select the Optical mode. Using the native controls on your connected device, make sure the audio settings are set to PCM or Optical Audio and are turned On. Audio from the connected audio source will now be played through the speakers. OPTICAL cable Rear view of the unit 8 OPTICAL-IN Instructions Guide Using the MP3 Link Connection (Line In) Plug one end of a 3.5mm to 3.5mm Line In cable (included) into the Line In port on the unit. Before use, disconnect any cables connected to the Stereo RCA Inputs. Plug the other end of the cable into the audio output/ headphone output on an MP3 player or other audio source. Press the Power button on the soundbar or POWER button directly on the remote control (Rem.10)to switch on the unit. Press the Mode button repeatedly on the soundbar or press the MODE button on remote control (Rem.18) repeatedly to enter LINE in mode. Audio played through the connected device will now be heard through the speak…

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Shenzhen Gosinggo Electronics Co., Ltd. 2022.04.11 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: 2.1CH soundbar with subwoofer Trademark: N/A MODEL: MD 43590, GS-SB61 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Carefree Han /Marketing Manager Contact information / address: R302, Bldg B, Tianrun Smart Innovation Industrial Park, No.23, Jiuwei 1st Rd, Hangcheng Str, Baoan District, Shenzhen City, China.

Shenzhen Gosinggo Electronics Co., Ltd. 2022.04.11 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Carefree Han /Marketing Manager Contact information / address: R302, Bldg B, Tianrun Smart Innovation Industrial Park, No.23, Jiuwei 1st Rd, Hangcheng Str, Baoan District, Shenzhen City, China.

Shenzhen Gosinggo Electronics Co., Ltd. Model Difference 2022.04.11 Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA RE: LETTER OF MODEL DIFFERENCE EUT NAME: 2.1CH soundbar with subwoofer FCC ID: 2AOCR-MD43590 MODEL: MD 43590, GS-SB61 All the model are the same circuit and RF module, except model names. Regards Sincerely Client’s signature Client’s signature: Client’s name / title : Carefree Han /Marketing Manager Contact information / address: R302, Bldg B, Tianrun Smart Innovation Industrial Park, No.23, Jiuwei 1st Rd, Hangcheng Str, Baoan District, Shenzhen City, China.

External Photos

Label & label location 20 mm*10mm 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, (2) this device must accept any interference received, including interference that may cause undesired operation FCC ID:2AOCR-MD43590 Label location

Internal Photos Antenna

FCC §15.247 (i), §2.1091 – RF Exposure FCC ID: 2AOCR-MD43590 Applied procedures / limit According to FCC §15.247(i) and §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. Limits for Occupational / Controlled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-3.0 614 1.63 (100)* 6 3.0-30 1842 / f 4.89 / f (900 / f)* 6 30-300 61.4 0.163 1.0 6 300-1500 F/300 6 1500-100,000 5 6 Note: ƒ is frequency in MHz * = Power density limit is applicable at frequencies greater than 100 MHz Limits for General Population / Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (E) (V/m) Magnetic Field Strength (H) (A/m) Power Density (S) (mW/ cm 2 ) Averaging Time |E| 2 ,|H| 2 or S (minutes) 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f)* 30 30-300 27.5 0.073 0.2 30 300-1500 F/1500 30 1500-100,000 1.0 30 Note: f = frequency in MHz * = Plane-wave equivalent power density MPE PREDICTION Predication of MPE limit at a given distance, Equation from OET Bulletin 65, Edition 97-01 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, R=0.2m TEST RESULTS Tune up Produce power Maximu m peak output power (dBm) Output power to antenn a (mW) Antenna Gain (numeric) Power Density (S) (mW/ cm2) Limit (mW / cm2 ) Result BT -1±1 0 1.0 1.549 (1.9dBi) 0.00031 1 Pass

No.：BCTC/RF-EMC-005 Page 1 of 83 Edition：A.4 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2203727770E Applicant: Shenzhen Gosinggo Electronics Co., Ltd. Product Name: 2.1CH soundbar with subwoofer Model/Type Ref.: MD 43590 Tested Date: 2022-03-09 to 2022-03-31 Issued Date: 2022-03-31 Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 2 of 83 Edition：A.4 FCC ID:2AOCR-MD43590 The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. Product Name: 2.1CH soundbar with subwoofer Trademark: N/A Model/Type Ref.: MD 43590, GS-SB61 Prepared For: Shenzhen Gosinggo Electronics Co., Ltd. Address: R302, Bldg B, Tianrun Smart Innovation Industrial Park, No.23, Jiuwei 1st Rd, Hangcheng Str, Baoan District, Shenzhen City, China. Manufacturer: Shenzhen Gosinggo Electronics Co., Ltd. Address: R302, Bldg B, Tianrun Smart Innovation Industrial Park, No.23, Jiuwei 1st Rd, Hangcheng Str, Baoan District, Shenzhen City, China. Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2022-03-09 Sample tested Date: 2022-03-09 to 2022-03-31 Issue Date: 2022-03-31 Report No.: BCTC2203727770E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Jeff.Fu/Project Handler Zero Zhou/Reviewer Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 3 of 83 Edition：A.4 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 8 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ............................................................................................................. 9 4.6 Table Of Parameters Of Text Software Setting ..................................................... 9 5. Test Facility And Test Instrument Used ............................................................... 10 5.1 Test Facility ......................................................................................................... 10 5.2 Test Instrument Used .......................................................................................... 10 6. Conducted Emissions .......................................................................................... 12 6.1 Block Diagram Of Test Setup .............................................................................. 12 6.2 Limit .................................................................................................................... 12 6.3 Test Procedure ................................................................................................... 12 6.4 EUT Operating Conditions .................................................................................. 13 6.5 Test Result .......................................................................................................... 14 7. Radiated Emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test Procedure ................................................................................................... 18 7.4 EUT Operating Conditions .................................................................................. 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 23 8.1 Block Diagram Of Test Setup .............................................................................. 23 8.2 Limit .................................................................................................................... 23 8.3 Test Procedure ................................................................................................... 24 8.4 EUT Operating Conditions .................................................................................. 24 8.5 Test Result .......................................................................................................... 25 9. Conducted Emission ........................................................................................... 26 9.1 Block Diagram Of Test Setup .............................................................................. 26 9.2 Limit .................................................................................................................... 26 9.3 Test Procedure ................................................................................................... 26 9.4 Test Result ...............................................................................................…

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Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 48 of 83 Edition：A.4 10. 20 DB Bandwidth 10.1 Block Diagram Of Test Setup 10.2 Limit N/A 10.3 Test Procedure 1. Set RBW = 30kHz. 2. Set the video bandwidth (VBW) ≥ 3 x RBW. 3. Detector = Peak. 4. Trace mode = max hold. 5. Sweep = auto couple. 6. Allow the trace to stabilize. 7. Measure the maximum width of the emission that is constrained by the frequencies associated with the two outermost amplitude points (upper and lower frequencies) that are attenuated by 20 dB relative to the maximum level measured in the fundamental emission. . Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 49 of 83 Edition：A.4 10.4 Test Result Temperature： 26°C Relative Humidity： 54% Test Voltage ： AC120V/60Hz Remark N/A Modulation Test Channel Bandwidth(MHz) GFSK Low 0.917 GFSK Middle 0.873 GFSK High 0.872 π/4DQPSK Low 1.245 π/4DQPSK Middle 1.287 π/4DQPSK High 1.291 8DPSK Low 1.242 8DPSK Middle 1.252 8DPSK High 1.252 Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 50 of 83 Edition：A.4 Test Graphs -20dB Bandwidth NVNT 1-DH1 2402MHz -20dB Bandwidth NVNT 1-DH1 2441MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 51 of 83 Edition：A.4 -20dB Bandwidth NVNT 1-DH1 2480MHz -20dB Bandwidth NVNT 2-DH1 2402MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 52 of 83 Edition：A.4 -20dB Bandwidth NVNT 2-DH1 2441MHz -20dB Bandwidth NVNT 2-DH1 2480MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 53 of 83 Edition：A.4 -20dB Bandwidth NVNT 3-DH1 2402MHz -20dB Bandwidth NVNT 3-DH1 2441MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 54 of 83 Edition：A.4 -20dB Bandwidth NVNT 3-DH1 2480MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 55 of 83 Edition：A.4 11. Maximum Peak Output Power 11.1 Block Diagram Of Test Setup 11.2 Limit FCC Part15 (15.247), Subpart C Section Test Item Limit Frequency Range (MHz) Result 15.247(b)(1) Peak Output Power 0.125 watt or 21dBm 2400-2483.5 PASS 11.3 Test Procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 2MHz. VBW = 6MHz. Sweep = auto; Detector Function = Peak. 3. Keep the EUT in transmitting at lowest, medium and highest channel individually. Record the max value. Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 56 of 83 Edition：A.4 11.4 Test Result Temperature： 26°C Relative Humidity： 54% Test Voltage ： AC120V/60Hz Remark: N/A Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low -4.2 21 GFSK Middle -4.89 21 GFSK High -5.82 21 π/4DQPSK Low -1.95 21 π/4DQPSK Middle -2.65 21 π/4DQPSK High -3.62 21 8DPSK Low -1.23 21 8DPSK Middle -1.87 21 8DPSK High -2.85 21 Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 57 of 83 Edition：A.4 Test Graphs Power NVNT 1-DH1 2402MHz Power NVNT 1-DH1 2441MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 58 of 83 Edition：A.4 Power NVNT 1-DH1 2480MHz Power NVNT 2-DH1 2402MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 59 of 83 Edition：A.4 Power NVNT 2-DH1 2441MHz Power NVNT 2-DH1 2480MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 60 of 83 Edition：A.4 Power NVNT 3-DH1 2402MHz Power NVNT 3-DH1 2441MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 61 of 83 Edition：A.4 Power NVNT 3-DH1 2480MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 62 of 83 Edition：A.4 12. Hopping Channel Separation 12.1 Block Diagram Of Test Setup 12.2 Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 0.125W. 12.3 Test Procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 63 of 83 Edition：A.4 12.4 Test Result Modulation Test Channel Separation (MHz) Limit(MHz) Result GFSK Low 1 0.917 PASS GFSK Middle 1 0.873 PASS GFSK High 1 0.872 PASS π/4DQPSK Low 1 0.830 PASS π/4DQPSK Middle 0.998 0.858 PASS π/4DQPSK High 1.002 0.861 PASS 8DPSK Low 1.002 0.828 PASS 8DPSK Middle 0.998 0.835 PASS 8DPSK High 1.002 0.835 PASS Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 64 of 83 Edition：A.4 Test Graphs CFS NVNT 1-DH1 2402MHz CFS NVNT 1-DH1 2441MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 65 of 83 Edition：A.4 CFS NVNT 1-DH1 2480MHz CFS NVNT 2-DH1 2402MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 66 of 83 Edition：A.4 CFS NVNT 2-DH1 2441MHz CFS NVNT 2-DH1 2480MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 67 of 83 Edition：A.4 CFS NVNT 3-DH1 2402MHz CFS NVNT 3-DH1 2441MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 68 of 83 Edition：A.4 CFS NVNT 3-DH1 2480MHz Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 69 of 83 Edition：A.4 13. Number Of Hopping Frequency 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test Procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all …

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Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 81 of 83 Edition：A.4 17. EUT Test Setup Photographs Conducted Measurement Photo Radiated Measurement Photos Report No.: BCTC2203727770E No.：BCTC/RF-EMC-005 Page 82 of 83 Edition：A.4