Mini amplifier board audio amplifier audio amplifier board 5V20W 2.1 channel digital amplifier audio module speaker DIY

Mini amplifier board, audio amplifier, audio amplifier board 5V20W 2.1 channel digital amplifier, audio module, speaker DIYWe 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 numbersAbout bass:The subwoofer must be matched well, and then installed into the box to make the phase inversion hole. Other parts shall be well sealed. Pay more attention to the speaker impedance, mouth meridian and height. If the impedance and mouth meridian are not consistent with its note stroke, it will not be enough. Not only the sound is small, but also there is no shaking of the subwooferThe same board is compared with the following two speakers, both of which are 4 Euro: the sound on the left is also 4 euro, which is not only very small, but also very poor sound quality; The one on the right performs very well in all aspects This product can drive 5V / 20W (W), based on the principle of circuit, the secondary development and processing, the maximum power can be configured to 20W [10W bass + 10W sub box (5W * 2)]; so the power amplifier board has strict requirements for power supply and horn,Selection requirements:Power requirements: DC Voltage 5V (4.8-5v), current more than 3A; (power line should also be able to pass such a large current; some power lines have such a large current, but the wire can not pass such a large current; secondly, mobile power should use the original genuine manufacturers, and ensure the discharge capacity to meet the standard (because this kind of product is lithium battery through the way of boosting), Shanzhai not only can't keep up with the current, but also can't keep up with the constant current. In particular, its instantaneous current can't keep up with it (it can't drive or distort the sound) and it's easy to damage the board. Pay attention!!Power supply mode and horn selectionA. 5V / 3A power is inserted into the red power socket;Horn requirements:Left and right channel sub box horn: 4 Ω / 5W full frequency horn.Bass speaker: choose 4 (Ω) 10W-15W bass speaker. Never use a 6-ohm or 8-ohm bass speaker;B. if the power is supplied from the USB socket of the motherboard (5v3a), the USB here can't be charged, please note;Horn requirements:Left and right channel speakers: 4 Ω / 3W full frequency speakers.Bass speaker: choose 4 (Ω) 5W bass speaker. Never use a 6-euro or 8-euro Bass speaker;Audio source: MP3, MP4, computer, PC, mobile phone