DC5V/3.7V TWS Stereo Bluetooth Amplifier Board Battery Powered 2*10W Dual Channel Stereo Audio Power Amplifier Board

Quantity : 1 High-concerned chemical : none is_d : Yes Supply Voltage : DC 5V/3.7V Type : Module Brand Name : diymore Origin : Mainland China Condition : New

Features: 1. Stereo dual channel, Bluetooth sound card dual-mode input 2. Bluetooth 5.1 wireless connection, stable transmission of stereo audio signals 3. Supports 2 * 10W output, 4 Ω speaker compatible with powerful driver 4. Supports dual power supply of 3.7V battery and DC5V, flexible adaptation to various scenarios 5. Suitable for portable speakers and DIY Bluetooth speaker projects Product Parameters: Chip type: Stereo Number of channels: 2 channels Audio input: wireless Bluetooth/wired sound card Compatible power supply: 3.7V battery/DC5V (note: voltage should not exceed 5V) Speaker: Suitable for 4 Ω speakers (2 Ω speakers cannot be used) Bluetooth version: 5.1 Output power: 2 * 10W (with distortion up to 2 * 10.6W) Output impedance: 4 Ω Power on standby power consumption: less than 35MA Shutdown standby power consumption: less than 25UA Charging power: 0.8 ± 0.1A Charging temperature rise:<30 ℃ (basic increase in ambient temperature) 3000MAH battery life reference dual 4 Ω speaker default EQ: half volume, normal song>20 hours; Maximum volume normal song>8 hours Mobile Bluetooth connection distance: ≥ 10 meters in non-metallic sealed conditions for transmission and reception Decoding: Basic SBC Protection mechanism: over temperature and over current Motherboard size 39 * 46mm; thickness 12mm Product Description: It is strictly prohibited to use hot melt adhesive The socket charging extension light, if it is not a red light, the red light of the motherboard needs to be removed to turn on. In addition, the extension charging light will not turn off when fully charged, If you want to fully turn off the lights, you need to connect the wires at both ends of the red light beads on the motherboard. Be sure to use batteries with a 3.7V overcurrent rating of 5A or higher and a protective board. Otherwise, the maximum volume battery will protect it. When using a 5V3A power supply without a battery and with wired power, the volume cannot exceed 50%, otherwise it will restart, The signal-to-noise ratio of the amplifier is 67, which means that when the volume is very low, white noise can be heard at a distance of about ten centimeters from the speaker. Remember not to shoot if you mind. The tuning software does not support WIN7 and below systems Support 30 5VRGB expansion chips Hide the volume adjustment pad Can charge the battery Powered by a single power battery Support computer tuning to save EQ 10 segment EQ gain with DRC dynamic compression Power button (click power on, long press power off, three clicks TWS pairing, four clicks to clear TWS pairing) M key (single machine light switch, double-click next track, triple click previous track, long press sound card Bluetooth switch) Integrated inductor with black gold capacitor Annotation: Bottom noise explanation, do not take pictures if you mind ① High sensitivity horn ② In a quiet environment, the straight distance is less than 30CM ③ Under the minimum volume condition, you may hear Sasanian noise ***Power supply requirements: 1. The battery input is 3.3-4.2V, and the current requirement for the battery plug input to the motherboard is continuous discharge of 5A and instantaneous 8A. For example, a 5C battery with 2000MAH and a 3C battery with 3000MAH. Battery protection board: requires 4 or more 8-pin MOSFETs 2. The adjustable power supply is connected to a battery socket, with a voltage requirement of 3.3V-4.2V, and a current greater than 14A is needed to meet the instantaneous load requirement. 3. Cannot power on without battery Battery cable requirements: The cable should be thicker than 22 # and less than 200mm (<20cm) in length Frequently Asked Questions and Answers ① The reason for the loud noise causing the restart to stall and shut down is insufficient power supply - please refer to the power supply requirements, verify the battery, protection board, and battery line parameters. (Note: Currently, there is a 1/3000 proportion of cases where loud speakers cause the motherboard to restart, and the copper wire that costs over one yuan is very thin.) There are no other reasons besides this. ② How to pair? ---Disconnect the phone, turn on the speaker, quickly press the power button three times to start a team - wait for 10 seconds to search for Bluetooth connection again. The initiator of the team is the left channel. Four hits cancel pairing. ③ The sound feels very low - very few, the phone needs to enable Bluetooth volume synchronization function - Settings - Bluetooth - Expansion - Check volume Synchronize or absolute volume, or connect a touch switch control on the reserved volume pad on the motherboard.

Product includes: 1x module+2x speaker cables (optional)

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