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#audioamplifier — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #audioamplifier, aggregated by home.social.

  1. I had a cheap audio amplifier from AliExpress, a few speakers pulled out of an old TV, a chunk of USB cable, a cardboard box, and half an hour. Looks like I made something! Audio quality isn’t the best, but it will run on a 5V/1A USB power supply and I can plug a radio into it instead of using headphones.

    Image description: Front view of a large TV speaker built into the front of a cardboard box and a smaller speaker built into the top. The speakers are held in place with zip ties. There is a black volume control knob to the right of the front speaker. A blue-cloth wire and a black wire exit the top right rear corner of the box.Image description: Rear view of the speaker in a box. There is a small audio amplifier PCB on the left side. The black wire, blue wire, and a yellow/brown wire from the speaker connect to this PCB. You can see the untrimmed zip ties.

    https://w1cdn.net/2024/10/brown-box-powered-speaker/

    #audioAmplifier #hamRadio #homebrew #speaker

  2. I had a cheap audio amplifier from AliExpress, a few speakers pulled out of an old TV, a chunk of USB cable, a cardboard box, and half an hour. Looks like I made something! Audio quality isn’t the best, but it will run on a 5V/1A USB power supply and I can plug a radio into it instead of using headphones.

    Image description: Front view of a large TV speaker built into the front of a cardboard box and a smaller speaker built into the top. The speakers are held in place with zip ties. There is a black volume control knob to the right of the front speaker. A blue-cloth wire and a black wire exit the top right rear corner of the box.Image description: Rear view of the speaker in a box. There is a small audio amplifier PCB on the left side. The black wire, blue wire, and a yellow/brown wire from the speaker connect to this PCB. You can see the untrimmed zip ties.

    https://w1cdn.net/2024/10/brown-box-powered-speaker/

    #audioAmplifier #hamRadio #homebrew #speaker

  3. I had a cheap audio amplifier from AliExpress, a few speakers pulled out of an old TV, a chunk of USB cable, a cardboard box, and half an hour. Looks like I made something! Audio quality isn’t the best, but it will run on a 5V/1A USB power supply and I can plug a radio into it instead of using headphones.

    Front view of a large TV speaker built into the front of a cardboard box and a smaller speaker built into the top. The speakers are held in place with zip ties. There is a black volume control knob to the right of the front speaker. A blue-cloth wire and a black wire exit the top right rear corner of the box.

    Rear view of the speaker in a box. There is a small audio amplifier PCB on the left side. The black wire, blue wire, and a yellow/brown wire from the speaker connect to this PCB. You can see the untrimmed zip ties.

    https://w1cdn.net/2024/10/brown-box-powered-speaker/

    #audioAmplifier #hamRadio #homebrew #speaker

  4. I had a cheap audio amplifier from AliExpress, a few speakers pulled out of an old TV, a chunk of USB cable, a cardboard box, and half an hour. Looks like I made something! Audio quality isn’t the best, but it will run on a 5V/1A USB power supply and I can plug a radio into it instead of using headphones.

    Image description: Front view of a large TV speaker built into the front of a cardboard box and a smaller speaker built into the top. The speakers are held in place with zip ties. There is a black volume control knob to the right of the front speaker. A blue-cloth wire and a black wire exit the top right rear corner of the box.Image description: Rear view of the speaker in a box. There is a small audio amplifier PCB on the left side. The black wire, blue wire, and a yellow/brown wire from the speaker connect to this PCB. You can see the untrimmed zip ties.

    https://w1cdn.net/2024/10/brown-box-powered-speaker/

    #audioAmplifier #hamRadio #homebrew #speaker

  5. I had a cheap audio amplifier from AliExpress, a few speakers pulled out of an old TV, a chunk of USB cable, a cardboard box, and half an hour. Looks like I made something! Audio quality isn’t the best, but it will run on a 5V/1A USB power supply and I can plug a radio into it instead of using headphones.

    Image description: Front view of a large TV speaker built into the front of a cardboard box and a smaller speaker built into the top. The speakers are held in place with zip ties. There is a black volume control knob to the right of the front speaker. A blue-cloth wire and a black wire exit the top right rear corner of the box.Image description: Rear view of the speaker in a box. There is a small audio amplifier PCB on the left side. The black wire, blue wire, and a yellow/brown wire from the speaker connect to this PCB. You can see the untrimmed zip ties.

    https://w1cdn.net/2024/10/brown-box-powered-speaker/

    #audioAmplifier #hamRadio #homebrew #speaker

  6. It works!

    Audio test was successful, quiet audio in -> loud audio out. Whoop, whoop!

    Left/right balance testing confirmed that I had not got that reversed. Only mistake seems to be with the volume pot, as I have to turn it anti-clockwise to increase the volume. I think I will have to fix that 🤔

    Other observations are a bit of hiss, and some mains hum from the laptop.

    Next, a box to live in and then I can connect it to my RC2040 🥳

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones
    #Electronics

  7. It works!

    Audio test was successful, quiet audio in -> loud audio out. Whoop, whoop!

    Left/right balance testing confirmed that I had not got that reversed. Only mistake seems to be with the volume pot, as I have to turn it anti-clockwise to increase the volume. I think I will have to fix that 🤔

    Other observations are a bit of hiss, and some mains hum from the laptop.

    Next, a box to live in and then I can connect it to my RC2040 🥳

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones
    #Electronics

  8. It works!

    Audio test was successful, quiet audio in -> loud audio out. Whoop, whoop!

    Left/right balance testing confirmed that I had not got that reversed. Only mistake seems to be with the volume pot, as I have to turn it anti-clockwise to increase the volume. I think I will have to fix that 🤔

    Other observations are a bit of hiss, and some mains hum from the laptop.

    Next, a box to live in and then I can connect it to my RC2040 🥳

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones
    #Electronics

  9. It works!

    Audio test was successful, quiet audio in -> loud audio out. Whoop, whoop!

    Left/right balance testing confirmed that I had not got that reversed. Only mistake seems to be with the volume pot, as I have to turn it anti-clockwise to increase the volume. I think I will have to fix that 🤔

    Other observations are a bit of hiss, and some mains hum from the laptop.

    Next, a box to live in and then I can connect it to my RC2040 🥳

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones
    #Electronics

  10. It works!

    Audio test was successful, quiet audio in -> loud audio out. Whoop, whoop!

    Left/right balance testing confirmed that I had not got that reversed. Only mistake seems to be with the volume pot, as I have to turn it anti-clockwise to increase the volume. I think I will have to fix that 🤔

    Other observations are a bit of hiss, and some mains hum from the laptop.

    Next, a box to live in and then I can connect it to my RC2040 🥳

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones
    #Electronics

  11. The kit soldering and build is complete... Next I need to test it with some audio and then house it in the small tin, or maybe something a little bigger 🤔

    Initial testing so far has just been connecting the 2x 9v batteries and switching it on. The power led illuminated, as hoped for!

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  12. The kit soldering and build is complete... Next I need to test it with some audio and then house it in the small tin, or maybe something a little bigger 🤔

    Initial testing so far has just been connecting the 2x 9v batteries and switching it on. The power led illuminated, as hoped for!

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  13. The kit soldering and build is complete... Next I need to test it with some audio and then house it in the small tin, or maybe something a little bigger 🤔

    Initial testing so far has just been connecting the 2x 9v batteries and switching it on. The power led illuminated, as hoped for!

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  14. The kit soldering and build is complete... Next I need to test it with some audio and then house it in the small tin, or maybe something a little bigger 🤔

    Initial testing so far has just been connecting the 2x 9v batteries and switching it on. The power led illuminated, as hoped for!

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  15. The kit soldering and build is complete... Next I need to test it with some audio and then house it in the small tin, or maybe something a little bigger 🤔

    Initial testing so far has just been connecting the 2x 9v batteries and switching it on. The power led illuminated, as hoped for!

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  16. I have now soldered all the PCB components. Off board potentiometers, audio sockets and power connectors next.

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  17. I have now soldered all the PCB components. Off board potentiometers, audio sockets and power connectors next.

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  18. I have now soldered all the PCB components. Off board potentiometers, audio sockets and power connectors next.

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  19. I have now soldered all the PCB components. Off board potentiometers, audio sockets and power connectors next.

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  20. I have now soldered all the PCB components. Off board potentiometers, audio sockets and power connectors next.

    #RC2040
    #AudioAmplifier
    #TL072
    #Kwelatones

  21. New project alert!

    Actually, this project is linked to my #RC2040. I have noticed that the RC2040 supports speech synthesis using allophones. So I need a small #AudioAmplifier - and I just happen to have a kit for one from #Kwelatones, based in South Africa (long story there 😊).

    It is a TL072 op-amp based amplifier.

    I have only added the 9v batteries and the mint tin to house it in.

    Anyways, my first step when starting a kit project is to check that I have all the parts, tick, tick, tick...

  22. New project alert!

    Actually, this project is linked to my #RC2040. I have noticed that the RC2040 supports speech synthesis using allophones. So I need a small #AudioAmplifier - and I just happen to have a kit for one from #Kwelatones, based in South Africa (long story there 😊).

    It is a TL072 op-amp based amplifier.

    I have only added the 9v batteries and the mint tin to house it in.

    Anyways, my first step when starting a kit project is to check that I have all the parts, tick, tick, tick...

  23. New project alert!

    Actually, this project is linked to my #RC2040. I have noticed that the RC2040 supports speech synthesis using allophones. So I need a small #AudioAmplifier - and I just happen to have a kit for one from #Kwelatones, based in South Africa (long story there 😊).

    It is a TL072 op-amp based amplifier.

    I have only added the 9v batteries and the mint tin to house it in.

    Anyways, my first step when starting a kit project is to check that I have all the parts, tick, tick, tick...

  24. New project alert!

    Actually, this project is linked to my #RC2040. I have noticed that the RC2040 supports speech synthesis using allophones. So I need a small #AudioAmplifier - and I just happen to have a kit for one from #Kwelatones, based in South Africa (long story there 😊).

    It is a TL072 op-amp based amplifier.

    I have only added the 9v batteries and the mint tin to house it in.

    Anyways, my first step when starting a kit project is to check that I have all the parts, tick, tick, tick...

  25. New project alert!

    Actually, this project is linked to my #RC2040. I have noticed that the RC2040 supports speech synthesis using allophones. So I need a small #AudioAmplifier - and I just happen to have a kit for one from #Kwelatones, based in South Africa (long story there 😊).

    It is a TL072 op-amp based amplifier.

    I have only added the 9v batteries and the mint tin to house it in.

    Anyways, my first step when starting a kit project is to check that I have all the parts, tick, tick, tick...

  26. A Practical Discrete 386 - There are some chips that no matter how much the industry moves away from them sti... - hackaday.com/2022/11/27/a-prac #audioamplifier #parts #audio #lm386

  27. A Practical Discrete 386 - There are some chips that no matter how much the industry moves away from them sti... - hackaday.com/2022/11/27/a-prac #audioamplifier #parts #audio #lm386

  28. A Practical Discrete 386 - There are some chips that no matter how much the industry moves away from them sti... - hackaday.com/2022/11/27/a-prac #audioamplifier #parts #audio #lm386

  29. A Practical Discrete 386 - There are some chips that no matter how much the industry moves away from them sti... - hackaday.com/2022/11/27/a-prac #audioamplifier #parts #audio #lm386

  30. A Practical Discrete 386 - There are some chips that no matter how much the industry moves away from them sti... - hackaday.com/2022/11/27/a-prac #audioamplifier #parts #audio #lm386