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video Simple LM386 audio amplifier
The song is:
Infected Mushroom
semi nice
FAQ:
Q: The sound sUxx0rz, fix it!
A: Can't, since there are barely any parts.
Q: How do I add volume control?
A: Either in series with the speaker (volume) or between pin 1 and pin 8 (gain)
Q: Why is there a 7805?
A: To conserve power, you can go without it if you feel like it.
Infected Mushroom
semi nice
FAQ:
Q: The sound sUxx0rz, fix it!
A: Can't, since there are barely any parts.
Q: How do I add volume control?
A: Either in series with the speaker (volume) or between pin 1 and pin 8 (gain)
Q: Why is there a 7805?
A: To conserve power, you can go without it if you feel like it.
Some of my music has heavy bass, but the amplifier cannot output it properly due to lack of power. Is there a way in which I can "precharge" the amplifier so that it won't lack power when a heavy bass comes?
Thank you for a reply i'll try putting a low-pass filter. i'll just post here what ever will happen to my amplifier :))
There's a lack of bass when there's a lack of power.
The only solution would probably be using some bigger batteries.
Maybe a DC-DC converter? I don't know.
But I do want to know how it works out for you :)
Best Regards
- Combined with a resistor to make a high / low pass filter, thereby making a tone control circuit.
The reason I didn't use any capacitors for this amp is because I tried using as few parts as possible, but if you want better sound quality I highly recommend them.Hope this helps!
Thank you very much - that helped alot, that was a great reply!
Have a nice day,
Lenwo
i tried the circuit on a breadboard first and although i was getting the output it was tooo noisy... i mean... i pulled out the jack from my ipod earphones and connected them to my droid.. and used the wires to emulate the circuit on a breadboard.. but on a breadboard the output was too noisy... the song itself was not identifie\able over the jittery noise after sometime.
I want to help you out here, but I don't really understand the question.
how do you deal with the noise, i constructed the same on a breadboard and found too much noise
If you mean distortion from the amp itself, that's just it's sound.
Remember:
There are barely any part in this thing, so the sound quality is bound to be crap.
i placed a high-pass filter to remove some of the very low frequency bass, now it sounds good. the next i'll try is removing the filter and applying a dc-dc conversion i think it will work but i'll just try to be sure. :) i'll just inform you what will happen next :)
btw. why did you suggested putting a low-pass filter? low-pass filter will remove high frequency audio right?
I recommended a low pass filter since you said there's not enough bass.
Or did I misunderstand something here?
Tell me the exact part number and i might be able to help.
http://img683.imageshack.us/img683/1641/p1010007ep.jpg
Hey Kirbsome my amp is made out of all scavenged parts too! It puts out about 15 watts.
Details please?
This is the page I got the schematic off of:
http://www.redcircuits.com/Page1.htm
Though I modified it somewhat because I didn't feel like using a high voltage op amp. So I put regulators on board it to run the preamp. I scored some vintage JRC OP amps off a board I salvaged and used one on it. They rock!
That project is only so so a really hot one is this:
http://www.gmarts.org/index.php?go=217
The schematic at the bottom of that page is the have all and end all! I took the one I made to a music store and let the guy there play with it some. After he got done all he could say was, how much do you want for it? I just smiled and said, not for sale. It is a worthwhile project to do.
I've my Eagle files for it but no way to host them. If you'd like I can try to attach them somehow here. A screenshot of the overdrive board:
The sound is too noisy. The noise is even amplified when i hold the wires from the audio source.
This amp, it's... crap.
The only silicon here is in the chip.
They are not shown in the video because i drew the schematic after I filmed.
Shut up!
Like, 73 people asked already, GAH
try it