Price:
US$8.54
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3pcs VHM-315 CT14 Mini 4.2 Stereo Bluetooth Power Amplifier Board Module 5W+5W with Miniature Charging DIY Board
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Instructions:
1. Bluetooth version 4.2.
2. Support USB sound card, free drive, plug and play (normal lithium battery power supply).
3. This product has its own dual 5W power
amplifier circuit. Do not use another amplifier to use! The output of
the two amplifiers cannot be connected in parallel or the negative poles
are connected together, otherwise the power amplifier chip will be
damaged.
amplifier circuit. Do not use another amplifier to use! The output of
the two amplifiers cannot be connected in parallel or the negative poles
are connected together, otherwise the power amplifier chip will be
damaged.
4. Can be connected to two 2-8 ohm, 3-10W speakers, push 4ohm 5W and 4 ohm 10W speakers. The output is stereo.
5. The maximum working current is 5V2A, using 5V2A or above regulated power supply, the sound quality is better!
6. It is recommended to use 3.7V lithium
battery (lithium battery needs to have a protection board!) comes with a
USB charging port for lithium battery charging, USB port can also be
used as a power supply port or 5V adapter power supply. Can not use dry
battery, charging treasure, Power supply with unstable voltage and
current such as multi-function transformer!
battery (lithium battery needs to have a protection board!) comes with a
USB charging port for lithium battery charging, USB port can also be
used as a power supply port or 5V adapter power supply. Can not use dry
battery, charging treasure, Power supply with unstable voltage and
current such as multi-function transformer!
7. When installing the Bluetooth board,
try not to be close to the metal parts of the Bluetooth antenna, so as
not to affect the transmission distance.
try not to be close to the metal parts of the Bluetooth antenna, so as
not to affect the transmission distance.
Package Included:
3 x VHM-315 CT14 Mini 4.2 Stereo Bluetooth Power Amplifier Board
