How to eliminate hiss on the amplifier module?

A

Alexander Sinitsyn2020-01-03 23:10:18

Arduino

Alexander Sinitsyn, 2020-01-03 23:10:18

I want to connect the bluetooth module (photo below) to the 3W speakers. I bought a 2x3W amplifier (photo below), but there is a hiss from it both with and without the connected module. Advise how to remove or some other amplifier module.

BT201

amplifier

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4 answer(s)

P

pfg21, 2021-01-04
@pfg21

powered from a "non-hissing" power supply.
take a "non-hissing" amplifier module.
In other words, sort out the otkel is hissing and eliminate the cause.

S

SOTVM, 2021-01-04
@sotvm

tyks

G

Grigory Boev, 2021-01-04
@ProgrammerForever

Check for ground loops

L

lonelymyp, 2021-01-04
@lonelymyp

Power the amplifier board from a high-quality power supply.