Years ago I had no luck getting the 386 to sound good, I watched your video's and I connected my Ipod stereo output together as you shown the proper way in another video, I am using 15volts supply,I am also using the bass boost between pins 1 and 5 and I have to say I am very impressed with the way this thing sounds!! Thanks for all the tips!!
Very nice video! One thing that most people don't realize is that since our hearing is logarithmic, 10 times the power is only twice as loud. In your example, 5 watts is only twice as loud as .5watts (.5watts was pretty loud), and 50watts therefore is only 4 times louder than 1/2watt. Thank you for doing such a great job!
Sounds great. I just did my first LM386 and it sounds like crap. A schematic would be very helpful. Thanks for sharing for now I know ....it will produce some pretty good audio.
These ICs perform really well if set up correctly. I have a home built LM386 stereo amp powering a pair of bookshelf speakers on my computer desk and at the moderate levels you need for close listening it sounds wonderful.
Love your channel and you knowledge and style. I am attempting my first Lm386, with 3 chips and stereo. I am a beginner and am still mapping things out. Glad your settled in your new place!! Sorry about your loss aswell. Love your content.
Hey JAT, Most excellent tutorial on LM386, built a few and this is what I needed to know, thankyou. I didn't realize the ground paths should be seperate, I usually put all grounds to one negative rail. Awesome! Please keep making vids as able, take care, C
Never thought that signal and power ground could be this important. I admit that when I was experimenting with audio IC's, I had a lot of problems with distorsions and such. Thanks for sharing your knowledge. :)
i have got a COPY of your kittycat! Almost exact same kittycat here! its a wild streetcat i ve got,but now,after a year or so,she finally became homely,....and LOVES my white Labrador. Awesome video dear friend!keep it up!,...love it! learned so much! greets from the Netherlands!
Btw a cap 1 or 2 UF down to .1 uf or suitable for your audio taste, audio from ground to unused input pin is good idea. It lets amp avoid offset on out put and lessens flat topping on plus or minus ac peak.
I built the circuit with a LM386-1. Sounds great and no noise. I then swapped it for the LM386-4. No difference in volume/gain. Tried both chips at 5v,9v,12v and the LM386-4 at 18v. No difference in volume gain. Any suggestions on why and how to fix? I used 4 and 8 ohm speakers. I have a guitar pedal prototyping unit that supplies the various voltages so I can quickly test all moving a dial. No difference at 20 times or 200 times gain.
Awesome video John. I wouldn't have given the capacitor on pin 7 a second thought when it comes to its ground point, but now that I have seen this video it becomes obvious when looking in the data sheet.
Thanks for watching! If I didn't mention it in the video, if you can get the LM386 sounding clean, you can get any amplifier sounding good. The LM386 is sensitive to proper grounding layout.
@@JohnAudioTech How can we have separate power and audio grounds when all grounds need to be electrically same at some point? Do you mean the distance between power and audio grounds should be far apart?
You're videos are great! I've learned a lot! After seeing this video I presume that the manhattan style of circuit construction is not apropriate for audio circuits? Having a commom ground as the entire copper board will it produce hum noise? What do you think? Thanks!
I did follow the guidance offered here and definatley noticed a difference in the output. One thing i noticed was that when powering up (and down) the LM386 was a distinct pop or bump from the connected speaker - what would your suggestion be to get rid of the pop or bump?
Like the cat. You can add small heat sink with heat conductive paste or silicon grease. U shaped fins or just thin copper bent in U about double size of chip will help a lot. Goid call on grounding plan. Really helps with the higher gain circuit with cap/ resistor from pins 1 to 8. 73 Karl
Hi John, If you see this 8 years after the video a quick related question from me where I am an on and off electronics hobbyist is: If you use an op-amp as a pre-amp with a Dual power supply such as +6 volts at the Vcc input and -6 volts at the Vee input where do you attach the Signal input ground? To a separate zone connected to Vee or to the floating or virtual ground or what ever the Zero volt connection is that the signal swings between as it swings towards but not hits both the +6 volt and -6 volt rails of the Dual Power Supply??? Thanks.....
Thank you very much John! Excellent, really reduced noise almost completely! What about Pin 7 capacitor? it's ground goes to power ground or signal ground?
This is going to sound mad but I just got 960mW into 8 ohm @ 12v, the chip got a little hotter than I'd like but it measured 2.78v RMS on the scope before clipping. Obviously the THD % will be high at this point but its still a surprise. Have you ever measured anything like this with the chip delivering higher power than the datasheet spec? Also heads up TI just updated their lm386 datasheet.
Hey John, really like your videos, will watch more. Was wondering what would you suggest as a modern alternative to the LM386. I am actually looking for a 5v 2-3W mono amp, something efficient that sounds decent. I can work with either 4 or 8 ohms. I am building an alarm clock that can play music, and would like something that can also run of a 500mah battery for a bit.
Why do you have a polyester cap on audio input but no resistor to make it a full rc filter? Im building an Lm386-4 stereo and need a cleaner audio input. Currently i only have a resistor in paralell.
I am trying to make an audio amplifier for an old WW2 record player using a 7052a chip. trying to figure out how the transisters go in as well ?? Trying to understand can be diffucult.. i think i have an idea, but need to make sure where the connecitons go..
I do hope you see this John. I received 50 x LM386 for £1.48. Failure rate = OOER! probably. No idea what V these LM386 (-1. -4 types ?) are so took a chance on 12 V. I did exactly as you said plus a big cap on each output (I did stereo and was worried about the DC / speaker thing) .They were pretty good on my old 15 Ohm Tannoy's, they are old school and VERY sensitive. First amp built in 50 years and first black thing wiv legs ever. Thanks for the help
12v supply with 15 ohm load is fine for these little ICs. You could go to 15v with that load to give you a little clipping headroom if you find you need it. Have fun!
So, I took screenshots of your before and after circuit, and flipped back and forth between them for a while checking for the differences. But there were no differences. Literally nothing changes. What's up with that?..
So the ground paths basically have to be built in a star topology? I have a 386 circuit using an 8 ohm old car speaker and I always get a cracking or popping during random occasions. 9V supply. When it pops the sound will be sort of muffled..until it pops again and I get my clear signal. Lol. Would this help? I'd have to pull the circuit out of the speak box ad see if I could rework the pcb to this method...
Yes, you should always use a star ground topology to keep high current signals from flowing in in the low current signal paths which can cause distortion or oscillation. Shielding of the input helps as well.
You should look into this thing everybody calls "the internet". I hear people can find all kinds of information there. Maybe you'll find the information you're looking for as well..
Btw, just a suggestion. Do you know smokey amp? Many people, me included have problems with noise. It would be nice if you can build it without noise, with just 2 47 uf capacitors and the lm386 ic. It is for electric guitars. Maybe you know it.
You have a ceramic capacitor on the input signal here. Do you know what the measurement is for that? It's not suggested in the datasheet. I have an electrolytic cap in that spot already, to remove the DC offset, but I am wondering if this input cap has a distinct purpose.
That reddish brown cap is a film cap. Ceramic is not recommended for passing audio signals. As I recall, the input impedance of the LM386 is around 50k, so 1uf should be plenty. The input of the LM386 is ground referenced and no cap is needed, however I recommend using one to remove any possible DC offset as you have done.
Very helpful! I will get some film caps pronto. When you say 1uF should be "plenty" - do you mean 1uF is "plenty high enough capacitance" so that the capacitor does not add significantly to the incoming signal's impedance, which should in total be below 50k? Is that the goal in choosing a cap value for this spot?
The input cap forms a high pass filter with the input resistance (impedance). The roll off point (pole frequency) would be only 3.18Hz with the 1uf cap. With such a small chip amp, it more cost effective to use a smaller film cap because they are cheaper. A .22uf would work just fine.
nice work! can you tel me if i can make an amplifier based on the lm386 to hear a guitar pickup output with earphones? as a sort of earphone monitor? thanks!
+tzenobite Yes you can. I actually have built a guitar amplifier. I use a 10" 2 way zenith allegro 3000 speaker as it's output. Makes a GREAT acoustic guitar amp.
Trying to add a 10k pot to the LM386(5v with TEA5767 radio chip/atmega on same BB), but having a few problems: I only have to turn the pot a little, and the volume distorts and cuts out. So I'm not getting the full volume range from 0 to 100% with the pot. How would I solve this?
Thanks for the reply John. I'd previously watched philo mech's tutorial, but it seems his is wired wrong. I've ended up putting a 104j cap on pin 3 to the pot output and removed the cap from pin 1 to 8. All working fine now and sounds pretty good to my ear:) Will watch your video though to make sure I ain't missing anything. Thanks again :))
I saw a video where someone claimed to get 8 watts out of one of these, it was extremely distorted though, and probably didn't last long after the video.
Awesome could you please explain jow to insert the msgeq7 into the circuit? Its a pretty cool future which enables you to assign lights to frequencies, yet the gain is set to 20db so it limits the outcome gain plays essential roll could be cool if you would be able to control it
hi john, thankyou for getting back to me me, im only learning electronics as a hobby, i only wanted to find out what values you used in the video with the caps plus what pins do they connect to thats all i wanted to no. i really enjoyed the videos that ive seen of yours keep up the good videoing. john
Hello there, I am currently studying electrical engineering and I have a question regarding circuits. I want to be able to build an amplifier or speaker, create an original outer casing and then be able to sell it. If you use someone else's circuit is it considered illegal? Or is everything on UA-cam regarding electronics and circuits open domain? I do not want to claim that I invented or created the circuit all by myself, I only wish to create a product that I can sell. Any thoughts on this?
I'm no lawyer but I think you are okay unless the circuit had some special design and was patented. Circuits based on ICs often have example circuits given by the manufacturer on the datasheet that you can use and modify without legal issue.
+JohnAudioTech Thank you so much for the response. First off, what does IC stand for? Second, are most of the circuits on UA-cam patented, and if so how can you tell? Is it in the description box or something? Also, how would you modify an existing circuit so that it's different than the original? Please get back to me on this!!!
Berk THE TURK IC stands for integrated circuit, and usually there will be some kind of disclaimer in the description or something if the design is patented, but they usually aren't
Great video. Super informative for those of us trying to troubleshoot our lm386 circuits. But the schematic you show is sorely lacking in information. This wouldn’t normally be a big deal, but your layout differs from what’s shown on TI’s LM386 datasheet. Can you add a link to the schematic for your circuit?
How can we have separate power and audio grounds when all the grounds are electrically same? I mean to say that we need to connect all grounds at same point then how can grounds be separate if we can't electrically separate them?
All wire and traces have a small amount of resistance and inductance. It is important that the small signal grounds are not carrying large signals (like the output return ground) Because the small voltage developed across the wire can be picked up by the input. Google star grounding. This may explain it better.
Excellent video. I have been wanting to build one of these little amps for a while. I am new to this, but I have become very interested in electronics after building a stir plate with the lm317 for home brewing. Can you send me a parts list? and schematic? I have looked online, but it seems like there are a lot of different options, as far as parts list go. Thank you.
hi john, i watched your video on youtube and liked it very much, ive just built a champ amp on a veroboard, could i get a schematic from you on the (lm386 audio amp and proper ground layout). please dusty
I have another video showing the layout when I made an amplified speaker using the LM386. I'd include a link but YT thinks messages with links are spam and blocks them.
for me destortion is not the problem coz i use high capacitor on the power gate and use 450uf capacitor between ground and pin 7 the problem is the overheating i put small capacitor on the oudio output it fixes the heating but weak sound
If you at first connected the speaker directly to the output with no capacitor in series with the speaker, the chip will get very warm and probably be damaged. You may need a new IC at this point.
sure i know coz capacitor in the sires works as stopper the feedback to out put and block the DC from passing to speaker and open the way for AC signals only to pass
The ones closest to me are still around they are independently owned. The corporate stores are closed. I've started shopping there again. Now they can purchase from other suppliers. I'm amazed at how much better their inventory is now. I actually bought a LM386N there yesterday.
MrJohhhnnnyyy I don't know about everyone else, but cats work with my lifestyle as they are cheap and easy to care for and if I need hit the road for a couple days, I just leave food, water and clean litter.Yes, this is basically star grounding.
Man! Oh Man! I watch a lot of your videos because they are helpful but, your camera is making me seasick. I can't finish watching this video. Please go back to your other camera.
The best lm386 tutorial you can see.
Years ago I had no luck getting the 386 to sound good, I watched your video's and I connected my Ipod stereo output together as you shown the proper way in another video, I am using 15volts supply,I am also using the bass boost between pins 1 and 5 and I have to say I am very impressed with the way this thing sounds!! Thanks for all the tips!!
Very nice video! One thing that most people don't realize is that since our hearing is logarithmic, 10 times the power is only twice as loud. In your example, 5 watts is only twice as loud as .5watts (.5watts was pretty loud), and 50watts therefore is only 4 times louder than 1/2watt. Thank you for doing such a great job!
Sounds great. I just did my first LM386 and it sounds like crap. A schematic would be very helpful. Thanks for sharing for now I know ....it will produce some pretty good audio.
These ICs perform really well if set up correctly. I have a home built LM386 stereo amp powering a pair of bookshelf speakers on my computer desk and at the moderate levels you need for close listening it sounds wonderful.
Love your channel and you knowledge and style.
I am attempting my first Lm386, with 3 chips and stereo.
I am a beginner and am still mapping things out. Glad your settled in your new place!! Sorry about your loss aswell. Love your content.
Hey JAT, Most excellent tutorial on LM386, built a few and this is what I needed to know, thankyou. I didn't realize the ground paths should be seperate, I usually put all grounds to one negative rail. Awesome! Please keep making vids as able, take care, C
Never thought that signal and power ground could be this important. I admit that when I was experimenting with audio IC's, I had a lot of problems with distorsions and such. Thanks for sharing your knowledge. :)
Yes, the devil is in the details. Thanks for watching!
There are so many variations of this thing on the net a pinout and part values via a schematic would be nice if you get the time. Thanks!
i have got a COPY of your kittycat!
Almost exact same kittycat here! its a wild streetcat i ve got,but now,after a year or so,she finally became homely,....and LOVES my white Labrador.
Awesome video dear friend!keep it up!,...love it! learned so much! greets from the Netherlands!
what are the values of those components? I like the way this circuit sounds and want to replicate it.
Btw a cap 1 or 2 UF down to .1 uf or suitable for your audio taste, audio from ground to unused input pin is good idea. It lets amp avoid offset on out put and lessens flat topping on plus or minus ac peak.
I built the circuit with a LM386-1. Sounds great and no noise. I then swapped it for the LM386-4. No difference in volume/gain. Tried both chips at 5v,9v,12v and the LM386-4 at 18v. No difference in volume gain. Any suggestions on why and how to fix? I used 4 and 8 ohm speakers. I have a guitar pedal prototyping unit that supplies the various voltages so I can quickly test all moving a dial. No difference at 20 times or 200 times gain.
Awesome video John. I wouldn't have given the capacitor on pin 7 a second thought when it comes to its ground point, but now that I have seen this video it becomes obvious when looking in the data sheet.
Thanks for watching! If I didn't mention it in the video, if you can get the LM386 sounding clean, you can get any amplifier sounding good. The LM386 is sensitive to proper grounding layout.
@@JohnAudioTech How can we have separate power and audio grounds when all grounds need to be electrically same at some point?
Do you mean the distance between power and audio grounds should be far apart?
You're videos are great! I've learned a lot!
After seeing this video I presume that the manhattan style of circuit construction is not apropriate for audio circuits? Having a commom ground as the entire copper board will it produce hum noise?
What do you think?
Thanks!
I did follow the guidance offered here and definatley noticed a difference in the output. One thing i noticed was that when powering up (and down) the LM386 was a distinct pop or bump from the connected speaker - what would your suggestion be to get rid of the pop or bump?
Great videos on the LM386 dude. Many thanks for your tips on the circuit layouts to reduce noise.
Like the cat. You can add small heat sink with heat conductive paste or silicon grease. U shaped fins or just thin copper bent in U about double size of chip will help a lot. Goid call on grounding plan. Really helps with the higher gain circuit with cap/ resistor from pins 1 to 8. 73 Karl
Hi John,
If you see this 8 years after the video a quick related question from me where I am an on and off electronics hobbyist is:
If you use an op-amp as a pre-amp with a Dual power supply such as +6 volts at the Vcc input and -6 volts at the Vee input where do you attach the Signal input ground? To a separate zone connected to Vee or to the floating or virtual ground or what ever the Zero volt connection is that the signal swings between as it swings towards but not hits both the +6 volt and -6 volt rails of the Dual Power Supply???
Thanks.....
I think you dont need to so that? This ic propably moves audio sinewave all to thw ppsitive site so u can just use gnd and v+
Thank you very much John! Excellent, really reduced noise almost completely! What about Pin 7 capacitor? it's ground goes to power ground or signal ground?
I thought power ground myself as it’s a bypass for power. If you have a noisy PSU it can help. John can confirm I guess!
This is going to sound mad but I just got 960mW into 8 ohm @ 12v, the chip got a little hotter than I'd like but it measured 2.78v RMS on the scope before clipping. Obviously the THD % will be high at this point but its still a surprise.
Have you ever measured anything like this with the chip delivering higher power than the datasheet spec? Also heads up TI just updated their lm386 datasheet.
Hey John, really like your videos, will watch more. Was wondering what would you suggest as a modern alternative to the LM386. I am actually looking for a 5v 2-3W mono amp, something efficient that sounds decent. I can work with either 4 or 8 ohms. I am building an alarm clock that can play music, and would like something that can also run of a 500mah battery for a bit.
Actually nevermind, I just watched your TDA7267 Video. Awesome channel! Keep up the good work!
Pam8406
Why do you have a polyester cap on audio input but no resistor to make it a full rc filter? Im building an Lm386-4 stereo and need a cleaner audio input. Currently i only have a resistor in paralell.
Your cat, at five minutes of rambling, said "Shut up and do some electronics."
Might your ever build layout and test lm386 stereo 2watt amp?
I am trying to make an audio amplifier for an old WW2 record player using a 7052a chip. trying to figure out how the transisters go in as well ?? Trying to understand can be diffucult.. i think i have an idea, but need to make sure where the connecitons go..
I read below in some answer that the decoupling capacitor connected to input ground is of 0.22 if or 1 uf. Is this correct?
Good video--thanks for the info. Were you using an LM386-1 or an LM386-3?
Tom Cleaveland I think it was a N-1
Very good but whats the use with circuit diagram okay ok I came to know that you can make it but no use for others
I do hope you see this John. I received 50 x LM386 for £1.48. Failure rate = OOER! probably. No idea what V these LM386 (-1. -4 types ?) are so took a chance on 12 V. I did exactly as you said plus a big cap on each output (I did stereo and was worried about the DC / speaker thing) .They were pretty good on my old 15 Ohm Tannoy's, they are old school and VERY sensitive. First amp built in 50 years and first black thing wiv legs ever. Thanks for the help
12v supply with 15 ohm load is fine for these little ICs. You could go to 15v with that load to give you a little clipping headroom if you find you need it. Have fun!
So, I took screenshots of your before and after circuit, and flipped back and forth between them for a while checking for the differences. But there were no differences. Literally nothing changes.
What's up with that?..
So the ground paths basically have to be built in a star topology? I have a 386 circuit using an 8 ohm old car speaker and I always get a cracking or popping during random occasions. 9V supply. When it pops the sound will be sort of muffled..until it pops again and I get my clear signal. Lol. Would this help? I'd have to pull the circuit out of the speak box ad see if I could rework the pcb to this method...
Yes, you should always use a star ground topology to keep high current signals from flowing in in the low current signal paths which can cause distortion or oscillation. Shielding of the input helps as well.
JohnAudioTech Shielding of the input?
Yes, using shielded cable on the input helps block electrical noise.
Can you tell me how can solve over heating problem Please.
Can I use 10uF capacitor as input coupling and 470uF as output coupling ?
I know I’m late buuuuuuut....
Do you remember what components you used for this circuit ?
You should look into this thing everybody calls "the internet". I hear people can find all kinds of information there. Maybe you'll find the information you're looking for as well..
¿So you are saying that pin 2 and 3 are for audio input, and 4-6 for power input? If it's like that, that sounds logical to me.
Btw, just a suggestion. Do you know smokey amp? Many people, me included have problems with noise. It would be nice if you can build it without noise, with just 2 47 uf capacitors and the lm386 ic. It is for electric guitars. Maybe you know it.
You have a ceramic capacitor on the input signal here. Do you know what the measurement is for that? It's not suggested in the datasheet. I have an electrolytic cap in that spot already, to remove the DC offset, but I am wondering if this input cap has a distinct purpose.
That reddish brown cap is a film cap. Ceramic is not recommended for passing audio signals. As I recall, the input impedance of the LM386 is around 50k, so 1uf should be plenty. The input of the LM386 is ground referenced and no cap is needed, however I recommend using one to remove any possible DC offset as you have done.
Very helpful! I will get some film caps pronto. When you say 1uF should be "plenty" - do you mean 1uF is "plenty high enough capacitance" so that the capacitor does not add significantly to the incoming signal's impedance, which should in total be below 50k? Is that the goal in choosing a cap value for this spot?
The input cap forms a high pass filter with the input resistance (impedance). The roll off point (pole frequency) would be only 3.18Hz with the 1uf cap. With such a small chip amp, it more cost effective to use a smaller film cap because they are cheaper. A .22uf would work just fine.
You may also find that the bread board is causing some noise through capacitance of the tracks
nice work! can you tel me if i can make an amplifier based on the lm386 to hear a guitar pickup output with earphones? as a sort of earphone monitor? thanks!
+tzenobite Yes you can. I actually have built a guitar amplifier. I use a 10" 2 way zenith allegro 3000 speaker as it's output. Makes a GREAT acoustic guitar amp.
Trying to add a 10k pot to the LM386(5v with TEA5767 radio chip/atmega on same BB), but having a few problems: I only have to turn the pot a little, and the volume distorts and cuts out. So I'm not getting the full volume range from 0 to 100% with the pot. How would I solve this?
See my volume control video (can't send link because of spam blocker). Sounds like you have some connections wrong on the pot.
Thanks for the reply John. I'd previously watched philo mech's tutorial, but it seems his is wired wrong. I've ended up putting a 104j cap on pin 3 to the pot output and removed the cap from pin 1 to 8. All working fine now and sounds pretty good to my ear:)
Will watch your video though to make sure I ain't missing anything. Thanks again :))
I saw a video where someone claimed to get 8 watts out of one of these, it was extremely distorted though, and probably didn't last long after the video.
Yeah, I think he was telling us a tall tale. The LM386 might blow up within seconds at that power level.
Awesome
could you please explain jow to insert the msgeq7 into the circuit?
Its a pretty cool future which enables you to assign lights to frequencies, yet the gain is set to 20db so it limits the outcome
gain plays essential roll could be cool if you would be able to control it
I would like to see how you deal with LM386 bridge config.
hi john,
thankyou for getting back to me me, im only learning electronics as a hobby,
i only wanted to find out what values you used in the video with the caps plus what pins do they connect to thats all i wanted to no.
i really enjoyed the videos that ive seen of yours keep up the good videoing.
john
I used pretty much what the datasheet recommends and it also shows the pin out of the IC.
Can I use 4v battery?
I put a .47 uf cap from output to ground and it sounds really good
Hello there,
I am currently studying electrical engineering and I have a question regarding circuits. I want to be able to build an amplifier or speaker, create an original outer casing and then be able to sell it. If you use someone else's circuit is it considered illegal? Or is everything on UA-cam regarding electronics and circuits open domain? I do not want to claim that I invented or created the circuit all by myself, I only wish to create a product that I can sell. Any thoughts on this?
I'm no lawyer but I think you are okay unless the circuit had some special design and was patented. Circuits based on ICs often have example circuits given by the manufacturer on the datasheet that you can use and modify without legal issue.
+JohnAudioTech Thank you so much for the response. First off, what does IC stand for? Second, are most of the circuits on UA-cam patented, and if so how can you tell? Is it in the description box or something? Also, how would you modify an existing circuit so that it's different than the original? Please get back to me on this!!!
Berk THE TURK IC stands for integrated circuit, and usually there will be some kind of disclaimer in the description or something if the design is patented, but they usually aren't
Great video. Super informative for those of us trying to troubleshoot our lm386 circuits. But the schematic you show is sorely lacking in information. This wouldn’t normally be a big deal, but your layout differs from what’s shown on TI’s LM386 datasheet. Can you add a link to the schematic for your circuit?
Please see my newer video called the "LM386 done right" for a better implementation.
Separate input signal and power. Of course. Why didn't I think of that. Thanks for helping a newb :)
what is that reference book you are using
How can we have separate power and audio grounds when all the grounds are electrically same?
I mean to say that we need to connect all grounds at same point then how can grounds be separate if we can't electrically separate them?
All wire and traces have a small amount of resistance and inductance. It is important that the small signal grounds are not carrying large signals (like the output return ground) Because the small voltage developed across the wire can be picked up by the input. Google star grounding. This may explain it better.
Excellent video. I have been wanting to build one of these little amps for a while. I am new to this, but I have become very interested in electronics after building a stir plate with the lm317 for home brewing. Can you send me a parts list? and schematic? I have looked online, but it seems like there are a lot of different options, as far as parts list go. Thank you.
Google for the LM386 datasheet. It gives several samples of different amplifiers you can build.
hey are you using thomas floyd electronics book?
This actually works great. Just tried it. Thanks.
hi john, i watched your video on youtube and liked it very much, ive just built a champ amp on a veroboard, could i get a schematic from you on the (lm386 audio amp and proper ground layout). please
dusty
I have another video showing the layout when I made an amplified speaker using the LM386. I'd include a link but YT thinks messages with links are spam and blocks them.
@yehoutube Here is the link to my latest LM386 layout:ua-cam.com/video/P4GsoMTv-SY/v-deo.html
Can I use speakers, large then 4watt
can you help me with my 50w mini amplifier kit?
Sounding good man can i get tha schematic
for me destortion is not the problem coz i use high capacitor on the power gate and use 450uf capacitor between ground and pin 7 the problem is the overheating i put small capacitor on the oudio output it fixes the heating but weak sound
If you at first connected the speaker directly to the output with no capacitor in series with the speaker, the chip will get very warm and probably be damaged. You may need a new IC at this point.
sure i know coz capacitor in the sires works as stopper the feedback to out put and block the DC from passing to speaker and open the way for AC signals only to pass
Thank for this, it made a lot sense.
Distortion / overdrive with the LM 386 ( schematics please )
rip Radioshack
The ones closest to me are still around they are independently owned. The corporate stores are closed. I've started shopping there again. Now they can purchase from other suppliers. I'm amazed at how much better their inventory is now. I actually bought a LM386N there yesterday.
it always overheating wich makes audio decreases how can i solve this problem
The Future Sound Of Egypt put a series cap at output to speaker.
LM386 has only 3 connections, +, - and Output, but in your circuit I see 4 connections to the LM386 8:03! How is that possible?
it has 8 pins, but only 3 are drawn in diagrams as its an OpAmp.
i saw Snickers passed away, was he sick?
Hi Larry, Yes, I lost my little buddy last July. There is a post in the community tab of my channel with more information.
I want distortion / fuzz but not interference & hissing , just good guitar distortion
anyone got the ckt diagram? along with pin nos. n all?
What you want?
INFORMATION. INFORMATION. INFORMATION.
Wow. It was a little jarring to hear you talk about Radio Shack in the present tense.
Do you have the full schematic with labeling of the grounding...i would like to try this
Look up my LM386 amplified speaker project. It has a schematic. YT blocks links as spam so I can't post a link.
Thx will check it out
man I wish you wouldve gone through the actual wiring process
silentscribes In my LM386 amplified speaker project, I showed more of the wiring layout using basically the same circuit.
Seems like every electronics hobbyist have a cat. Kinda like "must have" LOL
And, this kind of layout is called star ground, right?
MrJohhhnnnyyy I don't know about everyone else, but cats work with my lifestyle as they are cheap and easy to care for and if I need hit the road for a couple days, I just leave food, water and clean litter.Yes, this is basically star grounding.
Very simple thanks
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Man! Oh Man! I watch a lot of your videos because they are helpful but, your camera is making me seasick. I can't finish watching this video. Please go back to your other camera.
Try 5 v
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