Cheap 5V 2.1 Channel Rechargeable Amplifier Speaker Bluetooth5.2 Amplifier BT 10w Power Amplifier Wireless Amplifier Board PCBA

We are a professional design, development, production and sales factory. We can design, develop and produce according to your requirements; Welcome OEMNote: The module chip model number is random; Different batches have different YMX-809/5.2 wireless player, 5v2.1 mini power amplifier, BT power amplifier board, wireless audio amplifier The power supply of the module is different, and the requirements of the horn are different; The first kind: 5v3A power adapter selection requirements: Power requirements: DC voltage 4.8-5v, voltage can not be higher than 5V, current more than 3A Horn requirements: Left and right channel speakers: 4 Ω / 5W + 5W full frequency speakers. bass loudspeaker: choose 3 ohm (Ω) 10W bass loudspeaker. Do not use 4 or 8 ohm bass loudspeaker;The second kind：when using 3.7V lithium battery, the selection conditions are as follows: Battery requirements: battery 3.7v-5v, voltage not higher than 5V; discharge current greater than 3A, and must have a charging protection circuit board Horn requirements: Left and right channel sub box horn: 4 Ω / 3W +3W full frequency horn. bass loudspeaker: 3 Ω 5W bass loudspeaker. Never use a 4-euro or 8-euro bass loudspeaker; Special attention:

1. The power supply shall not be connected to any AC power supply, the voltage shall not be higher than 5V, and the current shall not exceed 3A;
2. When using BT, the 3.5 audio head cannot be inserted into the 3.5 headphone hole, otherwise BT will not be searched; if the 3.5 audio plug is inserted, the function will be in aux mode