The LM386. WOW, this brings back old memories. It reminds me of the LM393. I have been out of the electronics business for quite some time due to health reasons. But it reminds me of the time us techs used to build things such as our own Pay TV Decoders. They said that it was illegal, but that makes no sense since the pay TV video/audio RF signal was provided directly to us by the cable company, and provided for free. The only problem was that it was all messed up and needed a little bit of kind fixing that we each did out of the kindness of our hearts. My decoder cost me a total of about $5.00. That includes me having to make my own PCB. It contained just three I.C's and a few other components. One was a cheap 8 pin LM393 dual comparator, a 14 pin mc4066 quad transmission gate, and the other was an mc14538 dual timer. This board only pulled about 15 mA, and thus it could be placed either inside the TV itself, or inside a TV converter box and then it would use the conveters power supply. This baby decoded the video, via line by line decoding, rather than use the complex frame decoding method, that required phase locked loop circuitry, which requires lots of parts, and thus in turn would require an additional power supply. Ahhh, the good old days.
Yeah, back when people made color organs and you could actually fix things without a degree in programming. One of my favorite things to build was Larson scanners. You know, the scanning red light in the Cylons of Battlestar Galactica and KITTs little red chaser in his hood? Yeah, back when TV was actually entertaining too...
Way back when I also threw together a Hero 2000 robot that was in kit form. The damn thing when up in smoke to a degree a couple of times. It turned out to be a design flaw. On the motor control board, circuitry was set to change polarity of the power that was applied to each motor, thus motors could go forward or reverse. But it also had a couple of IC's dedicated to protect against both polarity selections being active at the same time. If this happens, then +12 ends up being connected to ground via a couple of power transistors. Well that is exactly what had happened. When Hero went into sleep mode, he shut down several power lines. By design error, this included the power that was applied to the IC's dedicated to protection. Here is the funny part. Most of the time the protection IC's worked fine without power. They were receiving incoming signals, and the signals themselves were also acting as a power source for each of these IC's. Anyhow, the manufacturer of the Hero 2000 kit gave me a new motor control board, free of charge. My Hero 2000 is still up and running. Hero is what a Hero 2000 looks like. i.ytimg.com/vi/0V8EVtUM8yA/hqdefault.jpg
I remember those. Lately I'm building Dalecs. If your a whovian then you'd understand completely why a grown man would want a silver upside down trashcan motoring about spouting lines like "Intruder! Identify!" and "Exterminate!" It get's even more funny when you arm them with airsoft guns. It's amazing what you can do with a few microcontrollers these days.
I bought an inexpensive drone and crashed it. I repaired it and was amazed at how simple the motherboard was. Just a few components although Surface Mount Devices which included Flight Controls and Analog to Digital convertors, receivers. etc.
Thanks I really appreciate your walk through vid, really like how you say exactly what components you are using as you put them in place, not many people do that and it's frustrating when they don't. I'm brand new to electronics so so it's refreshing to be told what they are, where they go, and what there doing. Thanks again. Hope you make more walk through vids.
If you're just learning how to build stuff like this, DO NOT do it how he is doing it. Never connect your power supply or battery until you've completed wiring everything and have double checked your work. Maybe if he did that he wouldn't have had a Tantalum capacitor blow up in his fingers.
gatekeeper65 Reminds me of when I was learning about motor controls. I tried to make changes to my circuit without removing power, and I vaporized the end of a banana plug.
I got drunk a few days ago and somehow ordered 100 of those IC`s...well at least this is one of the more useful drunki purchases, i just wonder why i baught 100 of them....damn alcohol
I had 0.30$ on my bank card and i wanted to spend them on something i and i found randomly 10x chips that i never show before i bought them and now im here to see how to use them as amplifier :D
I remember hearing you discuss a business idea with a 30ft tall plastic cowboy in the middle of the night outside a casino. You told the plastic cowboy you would make him rich with your headphone amplifier idea. You needed a 100 LM386s to start production.
Built this circuit with a 1 watt speaker and fitted it in a coffee tin! I didn't use the bass boost but it's still good for my wee workroom and will be used for testing low output audio circuits and for music on my ipod nano, phone etc. I fitted a pot in the gain circuit on the breadboard but used a 5k resistor in my final setup as that seemed about right. Thanks for your great little circuit. Another happy customer! A bigger amp is my next project methinks!
LM386 isn't terrible, but it's very primitive. I use them as general purpose op amps, but they can sound great as a preamp. You can even make a distortion pedal out of them as these distort with a pleasant note when you push the gain too high.
@Sachin Chowdhury You can use the LM741 as a substitute for the LM386, but it won't have the same power output (or pin out). The LM741 is an op amp and the LM386 is a dedicated audio amp. It's the right tool for the job.
LM741 (or uA741) will work, until you plug into speakers (8ohm) because it's only 20mA max output power. Resulting to a completely distorted signal. LM386-1 is 250 mA max output power. About 12 times more. So NO, you CAN NOT use the LM741, it is a piece of crap only used for class demonstrations...
I went from this to having a dual LM386 driving to quite large 2 way Sony speakers such that its actually astonishingly loud. It took a while for my soldered board to be debugged but .. yeah. If you have adequate 9v power and efficient speakers. Then later I built a booster circuit with two transistors taking the out put of lm386 and amplifying that - it also sounds good. 1-2 watts of good clean sound can actually be enough to make something nice to listen to.
I found a problem with your circuit. If we fed an audio signal with a DC offset, which is very likely to happen, our amp would clip out most of our wave and a lot of distortion would occur. You can add a .1uF cap series to the audio signal. Another thing is that you are using only one channel of the stereo plug. You can combine the two channels with two 1K resistors to create mono out of it. A summing amplifier and a differential amplifier could also be used in order to make an "analog or gate" or basically adding the signals on top of each other, that would be a neater solution. It would be nice to add a 10K pullup resistor before the cap in order to power electret microphones. The dc offset will be filtered by the cap.
i just made the very basic first version of this on a breadboard and plugged it into a 12" speaker from a guitar amp, and played some guitar through it. hot damn. it sounds ridiculously good for the fact the amp costs substantially less than the 9V battery. with the gain pins bridged it's LOUD too! not sure about the impedance? anyways, amazing, thanks for the tutorial.
I made this thing on a copper perf board, and ran it on a 5v supply from a mobile charger. When there's no audio signal, there's no static noise. But playing audio produces lots of noise. I don't currently have a 9v battery to test out. I'll test with a 1000uF cap on the power input to see if it's better! Do you have any suggestion?
If you knew anything about el. components at all, you would know that is 470 (uf, pf, nf ect) correct, because it's very common value among capacitors, he just said wrong, that's it
@@CarpeDiem23 You have a bunch of newbies or amateurs who won't know about "standard" values. Stating and listing something correctly saves others from getting frustrated, annoyed, or bothered. I once received a grade of a "B" on a circuit in an EE lab. It would have been an "A" had I not mislabeled a couple of values. Having said all of this, Circuit Basics did a good job of laying out a basic LM386 audio amp circuit! Thumbs up and a grade of a B from me. ;)
This was very helpful ..can this be used as an onboard preamp for acoustic guitar with coaxial element and possible to add MID TREBLE as well apart from bass boost gain and volume ..much appreciated
Hi! The LM386 amplifier comes in 3 power ratings: 325mW, 700mW and 1W. The impedence can be chosen according to your supply voltage, but the most common is 8 ohms. I don't reccommend using speakers below 2 ohm impedence, because it will draw a lot of current.
exelent video ... just what i was looking for and the step by step was awsome... if u have the change to find a circuit to increase the power of an lm386 amplifier like the one u did ... or another easy to do amplifier to get more watts out of it will be awsome .... very good video and step by step ... hope to se more of them ... have a subscriber here bro
What voltage rating did you use on you capacitors? Couldn’t find that on the blog. Tried posting a comment but went to blank screen. Thanks. Would really like to see a parts list.
Just what I needed. I think this would work quite nicely as a low-power pre-amp to shape the tone. Correct me if I'm wrong but making a treble boost would just be a matter of correcting the values of the filter for your desired cut off and inverting the positions of R and C so that it's R rather than C that is connected to ground. BTW, is there a dual input version of this so that it can manage stereo?
Very Good , in question on your Input leads 3.5 plug what is located inside ""Series"" with the leads seems to have a Resistor? thinking Grounds or loops from Computer and other units having voltage different that might be on the line to cause harm ? You did say on your Blog ? couldn't fine anything about it. Thanks for your Efforts 73's Dale
Nice vid! Do you have any suggestions/recommendations as i want to learn electronics with the goal of building guitar amplifier/effects pedal in mind, i know there are tons of info online but i dont have any idea where to start...thanks!
+Elnufo You should do a little research about sallen key filters, those are active filters for amplifiers. Not sure it will work with LM386 but give it a try on a breadboard.
I don't have a schematic available, but there is a Fritzing diagram for this circuit in the article I wrote for this video. The link is in the description
When you connect pins 1 and 8, you bypass the internal circuitry that sets the gain of the amplifier to 20. Instead it sets the gain to 200. (X10 louder than the latter configuration).
LOL Amazing. A video about audio amplifiers because people want to hear. I had to read every word because the volume is too low. Thing is I hear a lot of videos real good. I have that too loe audio problem with a lot of videos. Those who reply to similar comments are willing to tell me, :"Well I adjusted my settings to industry standards." Maybe all those videos with the volume too low did the same thing and the people who made videos I can hear with no problem didn't use those industry standards. But I'm the one who is wrong. Oh well. 🤣
@@Circuitbasics OR "to" Circuitbasics Just a thought, maybe you read only my first sentence. :) At the risk of repeating what will be ignored again I hear a LOT of videos really well. Oh, my volume for your video was at maximum because I wanted the information. And some of those other videos I mentioned - - I have to turn my volume down or they're too loud for comfort. Brother, I'm not trolling. Just making a report I hoped would be helpful.
great and simple build but this can sound even better with a little better and bigger speaker. I made a GREAT guitar practice amp with LM386 and small bass boost. Super easy and great sounding. Is there a schematic for this build? I'd love to compare.
Jeyson Ardila I tracked down information about the "Ruby" amp using the LM386. I used this webpage and adapted the "Bassman" mod....so my amp is a RUBY BASSMAN. You can google it or go to this page which was my main source of information. runoffgroove.com/ruby.html Hope that helps! :D
hello,, what it i use 12 volts for power supply,,? is there any problem with that, or there is material or part that need to replace,, waiting for your response,, thank
I want to build an LED sound level indicator. I want to use a microphone to detect sound. I'm having a hard time finding anything that suits my needs. This looks promising. Question can I use NTE857M OP AMP, as a substitute for the LM386?
The LM386. WOW, this brings back old memories. It reminds me of the LM393. I have been out of the electronics business for quite some time due to health reasons. But it reminds me of the time us techs used to build things such as our own Pay TV Decoders. They said that it was illegal, but that makes no sense since the pay TV video/audio RF signal was provided directly to us by the cable company, and provided for free. The only problem was that it was all messed up and needed a little bit of kind fixing that we each did out of the kindness of our hearts.
My decoder cost me a total of about $5.00. That includes me having to make my own PCB. It contained just three I.C's and a few other components. One was a cheap 8 pin LM393 dual comparator, a 14 pin mc4066 quad transmission gate, and the other was an mc14538 dual timer. This board only pulled about 15 mA, and thus it could be placed either inside the TV itself, or inside a TV converter box and then it would use the conveters power supply. This baby decoded the video, via line by line decoding, rather than use the complex frame decoding method, that required phase locked loop circuitry, which requires lots of parts, and thus in turn would require an additional power supply.
Ahhh, the good old days.
Yeah, back when people made color organs and you could actually fix things without a degree in programming. One of my favorite things to build was Larson scanners. You know, the scanning red light in the Cylons of Battlestar Galactica and KITTs little red chaser in his hood? Yeah, back when TV was actually entertaining too...
Way back when I also threw together a Hero 2000 robot that was in kit form. The damn thing when up in smoke to a degree a couple of times. It turned out to be a design flaw. On the motor control board, circuitry was set to change polarity of the power that was applied to each motor, thus motors could go forward or reverse. But it also had a couple of IC's dedicated to protect against both polarity selections being active at the same time. If this happens, then +12 ends up being connected to ground via a couple of power transistors. Well that is exactly what had happened. When Hero went into sleep mode, he shut down several power lines. By design error, this included the power that was applied to the IC's dedicated to protection.
Here is the funny part. Most of the time the protection IC's worked fine without power. They were receiving incoming signals, and the signals themselves were also acting as a power source for each of these IC's. Anyhow, the manufacturer of the Hero 2000 kit gave me a new motor control board, free of charge.
My Hero 2000 is still up and running.
Hero is what a Hero 2000 looks like. i.ytimg.com/vi/0V8EVtUM8yA/hqdefault.jpg
I remember those. Lately I'm building Dalecs. If your a whovian then you'd understand completely why a grown man would want a silver upside down trashcan motoring about spouting lines like "Intruder! Identify!" and "Exterminate!" It get's even more funny when you arm them with airsoft guns. It's amazing what you can do with a few microcontrollers these days.
is it possible to view the video as well as audio, directly via satellite signals . request to inform me the process
I bought an inexpensive drone and crashed it. I repaired it and was amazed at how simple the motherboard was. Just a few components although Surface Mount Devices which included Flight Controls and Analog to Digital convertors, receivers. etc.
Thanks I really appreciate your walk through vid, really like how you say exactly what components you are using as you put them in place, not many people do that and it's frustrating when they don't. I'm brand new to electronics so so it's refreshing to be told what they are, where they go, and what there doing.
Thanks again. Hope you make more walk through vids.
If you're just learning how to build stuff like this, DO NOT do it how he is doing it. Never connect your power supply or battery until you've completed wiring everything and have double checked your work. Maybe if he did that he wouldn't have had a Tantalum capacitor blow up in his fingers.
gatekeeper65 why not?....that just takes all the fun outta of it...haha
gatekeeper65 Reminds me of when I was learning about motor controls. I tried to make changes to my circuit without removing power, and I vaporized the end of a banana plug.
I mean, when I was like 6 I blew up a yellow led... it was fun ig
he did leave part of the audio in hanging out... =D hahaha
Username checks out lol
you made it so simple to build , and i have been reading books but couldn't understand what to do, you are awesome..
I got drunk a few days ago and somehow ordered 100 of those IC`s...well at least this is one of the more useful drunki purchases, i just wonder why i baught 100 of them....damn alcohol
you do this too!
I had 0.30$ on my bank card and i wanted to spend them on something i and i found randomly 10x chips that i never show before i bought them and now im here to see how to use them as amplifier :D
I got drunk a few days ago and somehow woke up in a strange bed with 10 prostitutes - before I knew where I was 46 LM386s arrived by courier.
I remember hearing you discuss a business idea with a 30ft tall plastic cowboy in the middle of the night outside a casino. You told the plastic cowboy you would make him rich with your headphone amplifier idea. You needed a 100 LM386s to start production.
Do not Drink and Shop Online.
Built this circuit with a 1 watt speaker and fitted it in a coffee tin! I didn't use the bass boost but it's still good for my wee workroom and will be used for testing low output audio circuits and for music on my ipod nano, phone etc. I fitted a pot in the gain circuit on the breadboard but used a 5k resistor in my final setup as that seemed about right. Thanks for your great little circuit. Another happy customer! A bigger amp is my next project methinks!
hey man, nice guide! I was wondering, do you have a schematic of this circuit? Keep up the good work
I'm just about to build a similar circuit and learning from you, thank you for the clear and well explained tutorial, you have a soothing voice :o)
his voice is like ImNotMagic's UA-cam channel
Thanks :)
MsMadLemon use a TDA2822M . It is *_STEREO_* and sound a lot better. 👍😆
LM386 isn't terrible, but it's very primitive. I use them as general purpose op amps, but they can sound great as a preamp. You can even make a distortion pedal out of them as these distort with a pleasant note when you push the gain too high.
@Sachin Chowdhury You can use the LM741 as a substitute for the LM386, but it won't have the same power output (or pin out). The LM741 is an op amp and the LM386 is a dedicated audio amp. It's the right tool for the job.
+Circuit Basics will there be a lot of power difference using the LM741?
why would you recommend that, bad idea.
LM741 (or uA741) will work, until you plug into speakers (8ohm) because it's only 20mA max output power. Resulting to a completely distorted signal.
LM386-1 is 250 mA max output power. About 12 times more.
So NO, you CAN NOT use the LM741, it is a piece of crap only used for class demonstrations...
well said, the 741 is not in the same class!!!
ur circuit & ur 10k resistor do not match
Thanks a lot, I was looking for LM386 step by step, I wish I saw it 2 days back, waiting for weekend.
And I did it sire thanks again
I went from this to having a dual LM386 driving to quite large 2 way Sony speakers such that its actually astonishingly loud. It took a while for my soldered board to be debugged but .. yeah. If you have adequate 9v power and efficient speakers. Then later I built a booster circuit with two transistors taking the out put of lm386 and amplifying that - it also sounds good. 1-2 watts of good clean sound can actually be enough to make something nice to listen to.
I believe you need to use a larger speaker so that the low (bass) frequencies can be heard better.
You may want to disconnect the power first before doing connections, that way you could avoid damaging components with wrong wiring. Just a tip.
các ban có thể tham khảo sản phẩm tại: www.sendo.vn/lm386-dip-combo-2-chiec-9073922.html
Teringat masa2 jadul dulu, salam sukses diy, very nice,
Good video
Do you have a schematic diagram for the second circuit? That would be easier to read while making the circuit.
+Jadirah Sarmad if you have a schematic diagram plz send me also danishlegacy21@gmail.com i really need it for my project .
Pretty cool LM386 i made one and use mini transformer to remove noise
I found a problem with your circuit. If we fed an audio signal with a DC offset, which is very likely to happen, our amp would clip out most of our wave and a lot of distortion would occur. You can add a .1uF cap series to the audio signal. Another thing is that you are using only one channel of the stereo plug. You can combine the two channels with two 1K resistors to create mono out of it. A summing amplifier and a differential amplifier could also be used in order to make an "analog or gate" or basically adding the signals on top of each other, that would be a neater solution. It would be nice to add a 10K pullup resistor before the cap in order to power electret microphones. The dc offset will be filtered by the cap.
One question,
can i plug a guitar in this AMP to drive a 4 Ohm, 3 Watt Speaker?
i just made the very basic first version of this on a breadboard and plugged it into a 12" speaker from a guitar amp, and played some guitar through it. hot damn. it sounds ridiculously good for the fact the amp costs substantially less than the 9V battery. with the gain pins bridged it's LOUD too! not sure about the impedance? anyways, amazing, thanks for the tutorial.
Nice, glad you like it!
dude google
'ruby amp schematic" its an lm386 guitar amp design that has been around for years, and sounds great.
I built this bro! Thank you! It works well! Lmao its really cool!
Is there a schematic for this?
Nice video like it
Helpful
I made this thing on a copper perf board, and ran it on a 5v supply from a mobile charger. When there's no audio signal, there's no static noise. But playing audio produces lots of noise. I don't currently have a 9v battery to test out. I'll test with a 1000uF cap on the power input to see if it's better!
Do you have any suggestion?
you insired me to make circuts ur awesome
I assembled one circuit(LM386) successfully but your circuit ideas concerning LM386 showed how to improve on it.Thanks a lot.
i built one like this years ago but i think i used LM741 as preamp and the LM386 , i if i remember right
Can it work only with 386 connected guitar directly to its input ?
I want to learn more about this especially the quality of sound and bass and how to get louder sound without that noise
That's awesome! it works thank you..
Great video, thank you. Wish you good health and more videos. 12.2020
Can i use only ceramic and electrolytic Capacitors?
Can i powered it on 12V?
Can you give the link to the audio file you have used?
6:39 You said 740 pF capacitor in the video, but your tutorial says 470 pF. You should add an annotation to the video correcting this.
If you knew anything about el. components at all, you would know that is 470 (uf, pf, nf ect) correct, because it's very common value among capacitors, he just said wrong, that's it
@@CarpeDiem23 You have a bunch of newbies or amateurs who won't know about "standard" values.
Stating and listing something correctly saves others from getting frustrated, annoyed, or bothered.
I once received a grade of a "B" on a circuit in an EE lab. It would have been an "A" had I not mislabeled a couple of values. Having said all of this, Circuit Basics did a good job of laying out a basic LM386 audio amp circuit! Thumbs up and a grade of a B from me. ;)
Can this be used for an electric guitar or a bass guitar?
Thank you for this!
+Alo Leceta no problem :)
Thanks for the very detailed tutorial, Do you mind sending me any other files etc that you have on this project that isn't on the website
This was very helpful ..can this be used as an onboard preamp for acoustic guitar with coaxial element and possible to add MID TREBLE as well apart from bass boost gain and volume ..much appreciated
hey!.pls mention the wattage nd impedance of the speaker ur using...
Hi! The LM386 amplifier comes in 3 power ratings: 325mW, 700mW and 1W. The impedence can be chosen according to your supply voltage, but the most common is 8 ohms. I don't reccommend using speakers below 2 ohm impedence, because it will draw a lot of current.
Is it possible to do two inputs for this amp?Thanks
Amazing tutorial indeed!!!
Also how big a speaker can I drive through this? I had a 10 W speaker with 8 ohms . How much can the LM386 drive?
exelent video ... just what i was looking for and the step by step was awsome...
if u have the change to find a circuit to increase the power of an lm386 amplifier like the one u did ... or another easy to do amplifier to get more watts out of it will be awsome .... very good video and step by step ... hope to se more of them ... have a subscriber here bro
Thanks, glad you liked it!
vwey good sir, you have a new suscriptor
Nice tutorial!
Does it matter if the 0.1 uF caps are ceramic disc or Polyester? I see you have used both types.
Ceramic
What voltage rating did you use on you capacitors? Couldn’t find that on the blog. Tried posting a comment but went to blank screen. Thanks. Would really like to see a parts list.
Oh I found the parts list
you never gave a parts list! I'm new to this and I'm here scratching my head!!!
+Julio Reyes check out the wiring diagrams in the blog post, there's a link to it in the description
Can we just connect a semi-acoutic guitar to play ?
Just what I needed. I think this would work quite nicely as a low-power pre-amp to shape the tone.
Correct me if I'm wrong but making a treble boost would just be a matter of correcting the values of the filter for your desired cut off and inverting the positions of R and C so that it's R rather than C that is connected to ground.
BTW, is there a dual input version of this so that it can manage stereo?
Very Good , in question on your Input leads 3.5 plug what is located inside ""Series"" with the leads seems to have a Resistor? thinking Grounds or loops from Computer and other units having voltage different that might be on the line to cause harm ? You did say on your Blog ? couldn't fine anything about it. Thanks for your Efforts 73's Dale
can i use a 3W speakers in it ??
Nice vid! Do you have any suggestions/recommendations as i want to learn electronics with the goal of building guitar amplifier/effects pedal in mind, i know there are tons of info online but i dont have any idea where to start...thanks!
Sir will you help me in making 9 volt battery tester using LM386
The breadboard is good but do you have PCB designs for this?
Can you do an active Filter that lets only Bass come through?
+Elnufo You should do a little research about sallen key filters, those are active filters for amplifiers. Not sure it will work with LM386 but give it a try on a breadboard.
Will this work on a bigger speaker ? 4 ohm ?
where will these circuit diagram will be available
I don't have a schematic available, but there is a Fritzing diagram for this circuit in the article I wrote for this video. The link is in the description
Also, what is the resistance of the speakers themselves?
why does connecting the wire between pin 1 and pin 8 make the volume boost. at 4:18
When you connect pins 1 and 8, you bypass the internal circuitry that sets the gain of the amplifier to 20. Instead it sets the gain to 200. (X10 louder than the latter configuration).
LOL Amazing. A video about audio amplifiers because people want to hear. I had to read every word because the volume is too low.
Thing is I hear a lot of videos real good. I have that too loe audio problem with a lot of videos.
Those who reply to similar comments are willing to tell me, :"Well I adjusted my settings to industry standards."
Maybe all those videos with the volume too low did the same thing and the people who made videos I can hear with no problem didn't use those industry standards.
But I'm the one who is wrong. Oh well. 🤣
Try turning up the volume... Just a thought :)
@@Circuitbasics OR "to" Circuitbasics Just a thought, maybe you read only my first sentence. :)
At the risk of repeating what will be ignored again I hear a LOT of videos really well.
Oh, my volume for your video was at maximum because I wanted the information.
And some of those other videos I mentioned - - I have to turn my volume down or they're too loud for comfort.
Brother, I'm not trolling. Just making a report I hoped would be helpful.
very good idea
OK so I'm confused the more capacitors you you have the lens distortion their is or the more capacitors you have the more distortion you have?
its less bro, capacitors acts as filters
what effect does the impedance of the speaker has on the output?
can u tell me what values should the speaker have?
What kind of capacitors are it????? Besides the electrolitic ones
Could you use this to drive a guitar cab?
what if i want to add more than one speaker in series or parallel is this amp will work ?
Can I get exact value of all capacitors as well as the resistors
can I use this circuit for a 10W 4ohm speaker?
Will it sound good with guitar?
can this be used as a guitar amp
great and simple build but this can sound even better with a little better and bigger speaker. I made a GREAT guitar practice amp with LM386 and small bass boost. Super easy and great sounding. Is there a schematic for this build? I'd love to compare.
***** I'm trying so hard to find how to make a guitar amp, could you show yours? or how you did it?
Jeyson Ardila I tracked down information about the "Ruby" amp using the LM386. I used this webpage and adapted the "Bassman" mod....so my amp is a RUBY BASSMAN. You can google it or go to this page which was my main source of information.
runoffgroove.com/ruby.html
Hope that helps! :D
***** Thank you so much. I'll let you know how it turns out
Please do. I had a lot of fun with this one. It is also a great way to make a nice bluetooth amp. Just add a portable bluetooth plug thing.
List of materials needed please thank you😊
Would it be a good idea to use this on headphone as your speaker?
You definitely can. Just switch out the speaker for a female audio jack...
Can this be used to connect a computer
Do you have a schematic diagram of this circuit i want to make this one
+Danish Legacy Unfortunately I don't, the only diagram I have is the fritzing diagram posted on the blog
Is the volume distortion in the video from the circuit or the speaker?
+4998826p it's mostly from the speaker. I hooked up some headphones to it afterwards and there was very little distortion
as i know its a speaker from the pc bleeper , right?
Kiya hum tda 2030 ic waly 2.1 circuit me 4558 ki jaga lm358 laga dain to bass achi ho gi kiya
Nahi uska gain kum hai shayad
Kya 386 mein directly guitar bajega ya koi resistance series me lagana hoga ?
Any chance you have a schematic for this circuit to assist in making the connections?
what is the power of the speaker to can get it
Do you have a schematic you can post?
hello,, what it i use 12 volts for power supply,,? is there any problem with that, or there is material or part that need to replace,, waiting for your response,, thank
Yes, you can use 12V... The LM386 is rated at 4V to 12V.
is it enough to drive a 3W 8ohm speaker?
can i please get a circuit diagram for this op amp
Circuit Basics I have a smaller signal going in to the input on my amplifier than you do, how would I get it louder in that case?
+Owen Chase science channel you need preamp
+rawux1228 thanks
what should i do if i wanto use u s b prt as power supply
How can we make this in stereo ? Just make two ?
kindly tell mee the list of all the resistor and capacitor plz
How loud can this go?
Great project! I was keen to know whether you used a 8 Ohm speaker or some different.
Yes this is an 8 Ohm speaker
Circuit Basics
Is it 50k potentiometer?
How do you control the electricity suminister when you're not using
I just disconnect the battery, but you could add a toggle switch on the 9V line to turn it on and off
How much waatage of speaker we can connect with this circuit?
Turbo bass?
How can I compute the capacitors and resistor ?
Can i find a guide on the net, where are alle the parts used for?
What is in funtion of what, an what is compensates what.
i used a td2822 ic as amplifier... its sound is very distorted . pls suggest wat shd i do to make it sound better?.
can I change the speaker with an audio jack and plug in 9v speaker?
Yeah you can... Just switch the pos and neg outputs for the speaker with the pos and neg terminals for the output jack
Would I be able to hook up the bass potentiometer to another pre-amp circuit?
Hi. I just wanted to ask how would you connect LEDs to the IC so that they pulse to the beat of the music?
I want to build an LED sound level indicator. I want to use a microphone to detect sound. I'm having a hard time finding anything that suits my needs. This looks promising.
Question can I use NTE857M OP AMP, as a substitute for the LM386?