I want a wired connection between speaker and Raspberry pi 3 Model B. Bluetooth or Wireless connection is not my requirement.

Regarding my speaker - it should NOT simply output buzzer sounds but is capable of producing human voice/ music.

I have researched on this and have come to know that I would be connecting the speaker to the audio Jack provided on the Raspberry Pi 3 board. But direct connection won't be enough. There would be a need of an amplifier between audio jack and the speaker.

I want to know (to summarize):

  1. Exact names of chip/ IC that are needed.

  2. Circuit connection. Circuit diagram.

  3. Speaker specifications. Any low quality speaker that can be interfaced with Raspberry pi 3 3.5 mm Jack.

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    Hi @NeedSomeLuck, Welcome and Nice to meet you. Ah, let me see. For Rpi audio newbies, I would recommend the PAM8610 power amplifier. I used it with Rpi 3.5mm jack, and also USB sound stick, both working well with Rpi3B+. Any cheapy speaker (4/8/16Ω) are OK. References: AliExpress DC12V 15W + 15W PAM8610 Digital HiFi Power Amplifier US$8 / to continue, ... – tlfong01 Feb 20 '20 at 2:41
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    AliExpress 12V 15Wx2 PAM8610 Power Amplifier - US$8 (1) aliexpress.com/item/… (2) Power Amp PAM8610 Forum Discussion raspberrypi.org/forums/… – tlfong01 Feb 20 '20 at 2:42
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    You may also like to consider Rpi compatible USB sound/card/stick (so you can also record audio using a cheapy piezo microphone later). The USB sound stick is much more HIFi than Rpi's stupid, ugly looking, 3.5mm audio/composite video jack: (2) Power Amp PAM8610 Forum Discussion raspberrypi.org/forums/… (3) USB Sound Stick Forum Discussion raspberrypi.org/forums/…. Happy HiFi listening. Cheers. – tlfong01 Feb 20 '20 at 2:47
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    Ah, I forgot to mention one thing about some of the Rpi GPIO features of modern day audio power amps. (1) The usually have "shutdown", "standby" digital inputs, so can use Rpi GPIO pins (some requires converting to 5V, some are 5V tolerant) to do shut down or standby, to get rid the the annoying "squeking" sound. (2) Most of the cheapie (around US$1) are no longer the old days A/B circuit, but are D type, or digital type, meaning that the input audio analog signal is chopped and sampled, then using digital signal processing techniques to filter unwanted > 40kHz band, / to continue, ... – tlfong01 Feb 20 '20 at 3:25
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    Or do audio quality control, like heavy bass etc, as described in the USB audio sound stick spec. Another thing Rpi audio newbies can play with is the digital volume control, in say 40 steps, so Rpi can use a cheapy US$1 DAC to do fade in, fade out effects. The PAM8610 board I recommended above is DIY version, so it is easy to tear down and hack. – tlfong01 Feb 20 '20 at 3:31

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