It depends on your requirements, which you haven't specified. A passive filter will have loss; an active one won't. What are your frequencies? Do you need impedance matching? HP, LP, BP, BR?
After the Filter circuitry the signal is attinuated Do you know any reason ? after the output of bluetooth module u will find filter if i connect speaker directly to the output without filter the sound can be hear on speaker and if suppose i connect the speaker after the filter circuitry the siganl level is very low what u think ? do u know any reason as we are using RC passive filter in our Bluetooth based product
i am using the following schematic kindly suggest me any
Are you connecting BLUE_SPK(+/-) directly to the speaker? If so, you are attenuating it because you've got about 10K source impedance driving an (8?) ohm speaker. At the very least, you are attenuating your output by a factor of .67 (the 4.7K and 10K divider)
I am not directly connecting the output of SPK(+/-) to the speaker, after the SPK(+/-) i am giving this input to the amplifier circuit i.e. TPA3124D2.....
should i need 1uf and and 10K.......
How you have calculated that attenuation factor....? 1- gain ?
can i directly connect the output of 1uf capacitor to the amplifier? will it afect loading effect. ?
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