2AIQW-G25ACTIVE SPEAKER

G50 G25 AcousticAmplification.com G25 & G50 OWNER’S MANUAL | ® ® ~~ ® 20 30 4 | GAMMA SERIES Electric Guitar Amps G25 & G50 Owner’s Manual | 5 FRONT PANEL G25 & G50 OWNER’S MANUAL REAR PANEL 1. INPUT Connect your guitar here. If using any effects pedals, connect your guitar to those, and then connect the output from the last pedal to this jack. 2. VOLUME 1 Sets volume for the wide-open clean BLUE CHANNEL. 3. 1/2 CHANNEL SELECT Selects Channel 1 (blue LED is lit) or Channel 2 (red LED is lit). Disabled while rear panel CHANNEL SELECT FOOTSWITCH jack is connected. 4. VOICING Select one of the 4 voices for Channel 2 here, then turn knobs to the right to adjust sound and volume. 5. DRIVE Turn to minimum for cleanest sound for selected voice, turn up to increase drive and distortion. Does not affect BLUE CHANNEL. 6. VOLUME 2 Sets volume for Channel 2. Does not affect BLUE CHANNEL. 7. BASS, MID, TREBLE These knobs adjust tone, affecting both channels. For the standard tuning, turn the knobs so the white lines are pointing straight up. Turning a knob lower reduces that tone range. Turning higher increases it. 8. AUX IN Connect audio cable from smartphone, laptop or other source. 9. BLUETOOTH Press On/Pair for one second to activate Bluetooth pairing. Press Off to disable Bluetooth. Blue LED flashes when pairing, and lights solid when paired. 10. PHONES Connect earbuds or headphones here, speaker will be disabled. 123456 8 10 9 7 12 12 11 11 11. POWER Connect included power cable from power outlet to this power jack, and flip switch on. If amplifier will not power on and you suspect its fuse may have blown, turn off the power switch, unplug the power cord from the amplifier and open the fuse compartment under the power jack using a small flat blade screwdriver. If metal strip in fuse is broken, replace with fuse type indicated on rear panel. 12. CHANNEL SELECT FOOTSWITCH Connect a latching footswitch here for channel select control. Front panel 1/2 (Channel Select) 3 switch is disabled while footswitch is connected. FRONT PANEL REAR PANEL 6 | GAMMA SERIES Electric Guitar Amps G25 & G50 Owner’s Manual | 7 G25 & G50 OWNER’S MANUAL IMPORTANT SAFETY INSTRUCTIONSIMPORTANT SAFETY INSTRUCTIONS FCC STATEMENTS Please keep this instruction manual for future reference and for the duration of owning your GAMMA guitar amplifier. Please carefully read and understand the instructions inside this owner’s manual before attempting to operate your new powered loudspeaker. This instruction manual includes essential safety information regarding the use and maintenance of the amplifier. Take special care to heed all warning symbols and signs inside this manual and those printed on the amplifier on the back of the loudspeaker. WARNING TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THE AMPLIFIER TO WATER/MOISTURE, NOR SHOULD YOU OPERATE THE AMPLIFIER NEAR ANY WATER SOURCE. The exclamation point triangular symbol is intended to alert the user to the presence of important operating and maintenance(servicing) instructions in the user manual accompanying the Amplifier. The lightning flash with an arrow triangular symbol is intended to alert the user to the presence of non-insulated “dangerous voltage” within the product’s enclosure, and may be of sufficient magnitude to constitute a risk of electric shock. WARNING Handle the power supply cord with care. Do not damage or deform it as it may cause electric shock or malfunction when used. Hold the plug attachment when removing from wall outlet. Do not pull on the power cord. IMPORTANT SAFETY PRECAUTIONS 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all Instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. DO NOT turn on the GAMMA amplifier before connecting all other external devices. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. 11. Only use attachment/accessories specified by the manufacturer. 12. Use only the cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. 13. Unplug this apparatus during lightning storms or when unused for long periods of time. 14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 15. POWER SOURCES – This product should be operated only from the type of power source indicated on the rating label. If you are not sure of the type of power supply to your home, consult your product dealer or local power company. 16 WALL OR CEILING MOUNTING – The product should never be mounted to a wall or ceiling. 17. Where the mains plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable. 18. OBJECT AND LIQUID ENTRY – Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings. 19. Water and Moisture: This product should be kept away…

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Ningbo Tonwel Audio Co., LTD Agent Authorization Company: Ningbo Tonwel Audio Co., LTD Address: No.28, Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China Product Name: ACTIVE SPEAKER Model Number: G25 Product Description: ACTIVE SPEAKER with BT We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2021-11-19 Name: Jiankuai Li Title: PM Company: SHENZHEN STS TEST SERVICES CO.,LTD.

Ningbo Tonwel Audio Co., LTD Authorization Letter We, (the approval holder) Company name Ningbo Tonwel Audio Co., LTD Address No.28, Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China declare that the following representative (agent): Name (person) Bovey Yang Company name Shenzhen STS Test Services Co., Ltd. Addresss 1/F., Building B, Zhuoke Science Park, No.190, Chongqing Road, Fuyong Street, Bao’an District, Shenzhen, Guangdong,China City Shenzhen Country China to act on our behalf on all matters concerning the application and documents submitted to Micom Labs for product certification below Product Description ACTIVE SPEAKER Type or Model(s) G25 FCC ID: 2AIQW- G25 Attestation: City: Date: Name: (this must be a person) Function: Signature: (or official company stamp) China 2021-11-19 Jiankuai Li PM

2021.11.23 Federal Communications Commission Authorization & Evaluation Division 7345 Oakland Mills Road Columbia, Maryland 21046 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize SHENZHEN STS TEST SERVICES CO.,LTD./ A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District,Bao’an District, Shenzhen, Guang Dong, China/Jiankuai Li(Name of Agent company name and address, Name of Agent) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. Name: Jiankuai Li Title: PM E-mail:[email protected] This appointment is valid until further until December 31, 2021 Sincerely, Name: Zhihong Fu Title: Manager E-mail: [email protected] Company: Ningbo Tonwel Audio Co., LTD Signature:

Ningbo Tonwel Audio Co., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2AIQW-G25 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. Signature: Date: 2021-11-19 Name: Jiankuai Li Title: PM Company: SHENZHEN STS TEST SERVICES CO.,LTD.

Page 1 of 4 Report No.: STS2111024 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: G25 Photo 1 Photo 2 Page 2 of 4 Report No.: STS2111024 Photo 3 Photo 4 Page 3 of 4 Report No.: STS2111024 Photo 5 Photo 6 Page 4 of 4 Report No.: STS2111024 Photo 7 Photo 8

FCC Label Label Location FCC ID: 2AIQW-G25 110-120V~60Hz 20W FUSE:T1AL 250V

Page 1 of 5 Report No.: STS2111024 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: G25 Photo 1 Photo 2 BT Antenna Page 2 of 5 Report No.: STS2111024 Photo 3 Photo 4 Page 3 of 5 Report No.: STS2111024 Photo 5 Photo 6 Page 4 of 5 Report No.: STS2111024 Photo 7 Photo 8 Page 5 of 5 Report No.: STS2111024 Photo 9

Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, all test data presented in this report is only applicable to presented test sample. Shenzhen STS Test Services Co., Ltd. A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:[email protected] RADIO TEST REPORT Report No: STS21111024H01 Issued for Ningbo Tonwel Audio Co., LTD No.28, Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China Product Name: ACTIVE SPEAKER Brand Name: GAMMA Model Name: G25 Series Model: N/A FCC ID: 2AIQW-G25 Test Standard: FCC 47CFR §2.1091 S T L A B S Page 2 of 7 Report No.: STS2111024H01 Test Report Certification Applicant’s Name ................. : Ningbo Tonwel Audio Co., LTD Address.................................. : No.28, Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China Manufacturer's Name ........... : Ningbo Tonwel Audio Co.,LTD Address.................................. : 499 YingDong North Road, ZhanQi Town, Ningbo, China Product Description Product Name ........................ : ACTIVE SPEAKER Brand Name ......................... : GAMMA Model Name .......................... : .. : G25 Series Model .......................... : N/A Standards ............................. : FCC 47CFR §2.1091 This report shall not be reproduced except in full, without the written approval of STS, this document only be altered or revised by STS, personal only, and shall be noted in the revision of the document. Date of Test ........................................... : Date of receipt of test item ...................... : 03 Nov. 2021 Date (s) of performance of tests ............. : 03 Nov. 2021 ~ 03 Nov. 2021 Date of Issue .......................................... : 12 Nov. 2021 Test Result .............................................. : Pass Testing Engineer : (Chris Chen) Technical Manager : (Sean she) Authorized Signatory : (Vita Li) Page 3 of 7 Report No.: STS2111024H01 TABLE OF CONTENTS 1. GENERAL INFORMATION 5 1.1 GENERAL DESCRIPTION OF THE EUT 5 1.2 TEST FACTORY 5 2. FCC 47CFR §2.1091 REQUIREMENT 6 2.1 TEST STANDARDS 6 2.2 LIMIT 6 2.3 EUT OPERATION CONDITION 6 2.4 CLASSIFICATION 6 2.5 TEST RESULT 7 Page 4 of 7 Report No.: STS2111024H01 Revision History Rev. Issue Date Report No. Effect Page Contents 00 12 Nov. 2021 STS21111024H01 ALL Initial Issue Page 5 of 7 Report No.: STS2111024H01 1. GENERAL INFORMATION 1.1 GENERAL DESCRIPTION OF THE EUT Product Name ACTIVE SPEAKER Brand Name GAMMA Model Name G25 Series Model N/A Model Difference N/A Product Description The EUT is ACTIVE SPEAKER Operation Frequency: 2402~2480 MHz Modulation Type: GFSK(1Mbps), π/4-DQPSK(2Mbps), 8DPSK(3Mbps) Antenna gain: -0.68dBi Antenna Designation: PCB Antenna Rating Input: AC 110-120V, 60Hz Hardware Version Number N/A Software Version Number N/A 1.2 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 Page 6 of 7 Report No.: STS2111024H01 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 300 - 1500 -- -- F/300 1500 – 100000 -- -- 5.0 Limits for General population / Uncontrolled Exposure 300 - 1500 -- -- F/1500 1500 – 100000 -- -- 1.0 F= Frequency in MHz 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. 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. Page 7 of 7 Report No.: STS2111024H01 2.5 TEST RESULT Turn up Mode Detector Turn up Power BT AV -4±1dBm ANT Gain (G) 2402-2483.5MHz: -0.68dBi (gain of antenna in linear scale=0.855) ※※※※※END OF THE REPORT※※※※※ Protocol Max Turn up Power (dBm) Max Turn up Power (mW) ANT Gain(gain of antenna in linear scale) Power Density (mW/cm²) Limit (mW/c m²) Ratio Result BT -3 0.50119 0.855 0.00009 1 0.00009 Pass

Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, all test data presented in this report is only applicable to presented test sample. Shenzhen STS Test Services Co., Ltd. A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:[email protected] RADIO TEST REPORT Report No.: STS2111024W01 Issued for Ningbo Tonwel Audio Co., LTD No.28, Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China Product Name: ACTIVE SPEAKER Brand Name: GAMMA Model Name: G25 Series Model: N/A FCC ID: 2AIQW-G25 Test Standard: FCC Part 15.247 S T L A B S Page 2 of 75 Report No.: STS2111024W01 TEST RESULT CERTIFICATION Applicant’s Name ................... : Ningbo Tonwel Audio Co., LTD Address .................................. : No.28, Xiyi Road, Jiangshan Town, Yinzhou, Ningbo, China Manufacturer's Name ............. : Ningbo Tonwel Audio Co.,LTD Address .................................. : 499 YingDong North Road, ZhanQi Town, Ningbo, China Product Description Product Name ........................ : ACTIVE SPEAKER Brand Name ......................... : GAMMA Model Name ........................... : G25 Series Model .......................... : N/A Test Standards ....................... : FCC Part15.247 Test Procedure ....................... : ANSI C63.10-2013 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of STS, this document may be altered or revised by STS, personal only, and shall be noted in the revision of the document. Date of Test ................................ : Date of receipt of test item .......... : 03 Nov. 2021 Date (s) of performance of tests . : 03 Nov. 2021 ~ 03 Nov. 2021 Date of Issue .............................. : 12 Nov. 2021 Test Result .................................. : Pass Testing Engineer : (Chris Chen) Technical Manager : (Sean she) Authorized Signatory : (Vita Li) Page 3 of 75 Report No.: STS2111024W01 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 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 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 12 2.6 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 13 2.7 EQUIPMENTS LIST 14 3. EMC EMISSION TEST 16 3.1 CONDUCTED EMISSION MEASUREMENT 16 3.2 RADIATED EMISSION MEASUREMENT 20 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 32 4.1 LIMIT 32 4.2 TEST PROCEDURE 32 4.3 TEST SETUP 33 4.4 EUT OPERATION CONDITIONS 33 4.5 TEST RESULTS 34 5. NUMBER OF HOPPING CHANNEL 49 5.1 LIMIT 49 5.2 TEST PROCEDURE 49 5.3 TEST SETUP 49 5.4 EUT OPERATION CONDITIONS 49 5.5 TEST RESULTS 50 6. AVERAGE TIME OF OCCUPANCY 51 6.1 LIMIT 51 6.2 TEST PROCEDURE 51 6.3 TEST SETUP 51 6.4 EUT OPERATION CONDITIONS 51 6.5 TEST RESULTS 52 7. HOPPING CHANNEL SEPARATION MEASUREMEN 58 Page 4 of 75 Report No.: STS2111024W01 Table of Contents Page 7.1 LIMIT 58 7.2 TEST PROCEDURE 58 7.3 TEST SETUP 58 7.4 EUT OPERATION CONDITIONS 58 7.5 TEST RESULTS 59 8. BANDWIDTH TEST 65 8.1 LIMIT 65 8.2 TEST PROCEDURE 65 8.3 TEST SETUP 65 8.4 EUT OPERATION CONDITIONS 65 8.5 TEST RESULTS 66 9. OUTPUT POWER TEST 72 9.1 LIMIT 72 9.2 TEST PROCEDURE 72 9.3 TEST SETUP 72 9.4 EUT OPERATION CONDITIONS 72 9.5 TEST RESULTS 73 10. ANTENNA REQUIREMENT 74 10.1 STANDARD REQUIREMENT 74 10.2 EUT ANTENNA 74 Page 5 of 75 Report No.: STS2111024W01 Revision History Rev. Issue Date Report NO. Effect Page Contents 00 12 Nov. 2021 STS2111024W01 ALL Initial Issue Page 6 of 75 Report No.: STS2111024W01 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 C63.10-2013. Page 7 of 75 Report No.: STS2111024W01 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 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 RF output power, conducted ±0.68dB 2 Unwanted Emissions, conducted ±2.988dB 3 All emissions, radiated 9K-30MHz ±2.84dB 4 All emissions, radiated 30M-1GHz ±4.39dB 5 All emissions, radiated 1G-6GHz ±5.10dB 6 All emissions, radiated>6G ±5.48dB 7 Conducted Emission (9KHz-150KHz) ±2.79dB 8 Conducted Emission (150KHz-30MHz) ±2.80dB Page 8 of 75 Report No.: STS2111024W01 2. GENERAL INFORMATION 2.1 GENERAL DESCRIPTION OF THE EUT Product Name ACTIVE SPEAKER Trade Name GAMMA Model Name G25 Series Model N/A Model Difference N/A Channel List Please refer to the Note 2. Bluetooth Fr…

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Page 1 of 2 FCC ID: 2AIQW-G25 DSS Setup photo Model name: G25 DSS conduction DSS radiation L Page 2 of 2 FCC ID: 2AIQW-G25 DSS radiation H