7.4V Audio Motherboard 20W Power Amplifier Board With Bluet

Detailed Information About The Product:

The Bluetooth pull rod power amplifier board is suitable for the use or modification of the pull rod or a single sound. It also has microphone socket, USB card, Bluetooth, radio, recording, Chinese voice broadcasting, microphone priority, external aux interface and other functions. It can read MP3, WAV and wma in the TF Card and USB flash disk (sampling rate 8 - 48K / code rate 8 - 320kbps / bit width 16bits) music files
Use charging: 9V / 2A charging source, plug specification 4.0 * 1.7 small head, red light and green light flash alternately during charging. After full charging, the red light goes out and the green light goes on; Note: if your charger is inconsistent with this data, it is recommended to buy the package with charging source
Recording instructions: (you need to insert a U or TF card. The recording time depends on the memory capacity of the u or TF Card). 1. In music mode, briefly press rec to switch to MIC recording mode, and rec is displayed on the screen; At this time, briefly press rec to start recording, the recording time is displayed on the screen, and the recording equipment flag flashes. 2. In linein and FM mode, short press rec key to record directly
During recording: Short press rec to stop recording and automatically play the newly recorded file. After playing, return to the current mode interface, and short press rec again to record another file; Briefly press play to pause / resume recording; Briefly press the mode key to stop and save the recording, and return to the current mode interface; In the current mode interface, briefly press rec to record the next recording
To play a recording file: 1. Recording file switching: in music mode, long press rec to switch MP3 files and recording files. 2. Delete file: in music mode, pause the track being played, long press the mode key to delete the current file, del is displayedon the screen, and the next track will be played automatically after deletion

Microphone priority key:
1. In the radio / aux / MP3 mode, briefly press the microphone priority button, and the nixie tube will flash. At this time, shout into the microphone to listen to the sound in the radio / aux / MP3 mode
It will stop. After about two seconds, the sound in radio / aux / MP3 mode will return to normal;
2. In the microphone priority mode, briefly press the microphone priority button, and the nixie tube will flash twice. At this time, the microphone priority function is cancelled
Product parameters:
Power: 20W
Peak: 35W
Use charging: dc9v (above 2a) charger, only supports lithium battery charging, * does not support lead-acid battery charging!
Use lithium battery: 7.4v (3a - 6a) lithium battery, which needs to be connected in the machine! Or external DC12V / 3A - 5A power supply!
Horn used: 4 ohm / 6-8 inches / 60-100 magnetic / 20w-80w
Panel size: length 188mm, width 63mm, depth 36mm (total depth 52mm, including swivel cap)
Installation hole spacing: 178mm long on both sides and 52mm wide on both sides
Installation opening: 163mm long and 46mm wide
Weight: 0.14kg
colour:Black
Material:plastic

Package Contents:
1 x Audio Motherboard

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.