IMPORTANT: Check the safety battery charging schematic (video description) before you start this project. In the video I didn't use any kind of charging module and this project needs that. www.electronoobs.com/images/Circuitos/tut_9/safety_charging.png
MultiTerpen the literature mostly says no. What work around have been sited is a transformer for impedance matching or a separate circuit to turn the 2 amps into a single differential amp. cheaper to purchase a bigger amp. there are lots of discussions of this on the 'Diyaudio' forum.
Shit, 50w per channel @ 95% THD. More like 5 watts, @ 5% THD. You want to bridge this? Seriously, that thing doesn't have any capacitance to do such a thing, let alone a power supply to handle it. It may be loud, just don't let it dip under 100hz, it'd shit itself with any loud volume. Look around for any reputable amplifier maker (Alpine, Rockford Fosgate, etc) for circuit repair. Look at the components, such as capacitors, inductors, etc. This little amp is a joke, for 100w..
You need to balance them batteries. No two or more batteries are the same and when you charge these lithium batteries of any kind in a series, they never self balance... Each of the two batteries you have consist of two 4.2v Li-Po packs per bank equaling a total of four wired in a series. What you have is a 4S battery which equals 16.8v and under a load it will drop to 14.8 so you need to charge them to 16.8v total and you can charge them bulk but without a BMS or a hobby charger one battery can be 3.8 and the next could be 4.4v and the next 4.2v and the next 4.4 which still equals 16.8v... In this case there's two batteries that are over charged by .2v and will lessen the life or even worse catch on fire and explode. I went on Amazon and orders a special wall charger that's meant for charging these batteries and I wired them so I could use a detachable balancing device that equals out the cells... If you want these 2 items let me know or I could also show you a good 4S BMS with balancing. I also have a unique idea that works great so let me know. I looked at your charging method and advise against it for one both batteries have different voltages 3.6 and 3.7v and using a bunch of these wired in parallel would allow you to get away from not balancing but you will lose amperage needed to power this device because the more voltage you gain takes away from your amperage, so more voltage less current. One TP4056 only puts out a max of 1amp so say you charge 6 cells using that method only allows 0.1666 up to 0.167amps per battery so your charge time will take forever and low on amperage.
The wires coming out of these batteries are meant to balance and charge these batteries... Most have a bulk charge positive and negative and the other set of wires balance the batteries, but I figured out how to charge and have them balanced using four 5v phone charging adapters and four TP4056. NOTE: You need isolation using these chips so wire your batteries in a series then hook up a TP4056 to each battery in parallel, yes it works. But you need 4 separate 5v chargers. You can glue the wall chargers down and wire the AC part in parallel and run one AC to the wall. 16.8v
According to the datasheet you're only getting around 12w per channel at 10%THD at 15v. Since you're hooked to three speakers in the box each one is getting a whopping 4 watts:) Also stereo signals tend to sound like crap when you can only hear one side.
Yes, you are right and as I say in the video this project is not ready yet. I have already installed the battery charging/protection, status lights, and some more control buttons. Maybe I will upload a new video with the new improvements.
i would recommend using charging module made specifically for more baterries. Something like that for 2 baterries. www.aliexpress.com/item/4000053248089.html
Nice project! I had something just like this in mind. I was going to ask how to put the board in pairing mode again, after I had it paired with my phone, but apparently after being disconnected for a few minutes, then powering off and on again, it goes back into pairing mode. This is a really cool little amp! I had it driving my home stereo speakers and they are 150 watts! I had the input set to low because like you said, it doesn't sound good on the higher ones. I never thought about turning the volume up with the buttons. Mine didn't come with a case like some peoples did. I can make one though. I have plenty of rigid plastic. I now have this amp connected to my computer and connected to some small Pioneer book shelf speakers and they sound great as well.
great music. Loved hearing the Arctic Monkeys. As mentioned at the end, you are only connected one channel. That means you are losing all the sounds mixed to the other channel. One solution is to connect the other speaker output to a second speaker. Another is to use the rather simple circuit to mix it down to mono so although you lose the spatial separation you don't lose whole instruments, effects or vocals. I wish I could recall if there was anything special required to mix down. I used to do it 25 years ago and I always basically used a 2 channel mixer and panned left hard left and right hard right. I did it is raw circuit once with an audio engineer and if memory is serving me there was slightly more to it that just bunching the P and Ns together on the channel output. But perhaps I am wrong and it IS that simple. Vague memory of phasing issues. Ah shoot, too long ago to have trustworthy instructions for you.
The batteries you are using need to be charged with the correct charger and sequence. You need a balancing charger that will balance them at the correct voltage. If you over charge them they will explode.
Your math is failing so bad. "100w amp, 50w max used b'coz it's single channel, 40w speaker used" the amp is actually only 25+25w by manufacturer ST at optimal conditions in stereo at THD+N 10% (which you don't really want to listen to - that means alot of hiss) so you're basically stuck at about 7.2 watts according to the spreadsheet. And you said it well, the batteries never draw over an amp, because how could they! Damn they aren't even using that 14,4w that they would draw with one amp.
KandriX's Channel not only that but he states it's only drawing about one amp of current. my guess is a 12 volt output(just a guess, 12 for the board, 5 for the bt adapter, which would tell me that at max volume he's only drawing 12 watts per channel RMS, as he stated he is barely drawing one amp. way below the boards capability... am I wrong or right?
They would be drawing not more than half an amp and it would sound like crap. As I said, 10% THD+N is not a pleasure to listen, as everyone that ever worked with amplifiers knows. The "DIY 100w amp" is nothing more than a clickbait, based on one's arrogance or just dumbness to really calculate something. Maths is real, this title is fake.
You are absolutly right. I'll add some tags in the video to advise that! When I bought the board the seller sold it as a 50w+50w and I haven't double checked the datasheet. My bad... Thanks for your com. I hope you like my videos :)
Hey, thank you for this video which was very interesting for me, but would you maybe also record a video, in which you show the whole wiring process because I'm not quite sure how to wire all the cables and what adapters are really necessary. I'm sorry for any mistake I've made but English isn't my native language.
hi there. Thanks for your com. I will definitelly make another video on this project since this one is not finished yer. I have to add a battery safety charging module and some indication LED. But I don't know when I'll be able to make that vide because I'm already working on a few projects. Thanks again and keep up!
You're never going to get even 100 watt peak with this circuit. It's a bald-faced lie, plain and simple. The Chinese either have no regard for mathematics and physics or they have no regard for the truth - take your pick.
I’m making my first build I have purchased a few different board to find out what one will sound better I also purchased some amp plates I think that way is easier
Look at the Data sheet. This amp puts out 25w X 2. The ones saying that it is 50w are the deceptive ones. The ones that list it at 25W are the ones that put the correct rating. 25w is plenty of power for the record and very loud. Also, that schematic to charge the LiPo batteries is just dangerous which can easily lead to an overcharged battery.
You r right with both of those things! I've mixed up the power due to eBay and for the batteries I have already installed a safty battery charging module. Thank you and keep up!
A 50W amplifier into a 40W speaker is not what I call 100W speaker... Also at maximum volume it drains about 1 Amp wich is just less than 15W, so is impossible to create a 50W output. Anyway, good proyect. I'm thinking more less the same, but using an amplifier and an MP3 player with radio and bluetooth.
Really an awesome channel. I am super impressed. Just saw your unmasking and even more impressed. Way to go kid(yea I'm old..lol) I plan to do this project with one of my sons.... Question, have you updated this with the charging cut off and screen. I looked in your vids but did not notice it. I could have missed it. Again THANKS for the good work!
Hi! I was thinking that it would be great to have the possibilty o charging the battery with an external battery, like those we use to charge out phones when we are on a trip. I think a normal external battery provides 5v, ¿if we install an 5v-14.3v transformer instead of an 12v-14.4v it would be solved? Great video! Congrats
You could use this module to safe cahrge the battery using 5V USB : www.ebay.es/itm/2Pcs-Micro-Usb-1A-Module-De-Charge-De-La-Batterie-Tp4056-Precise-Nouveau-Diy-C-/131957026861?hash=item1eb940702d:g:yFEAAOSwo4pYHUwL You should add a boost module to the output of this module like this one: www.ebay.es/itm/5pcs-MT3608-DC-DC-Step-Up-Boost-Power-Module-Max-2A-Adjustable-for-Arduino-TE686-/282381038539?hash=item41bf38b3cb:g:l34AAOSw32lYuIhl Like this you could charge a 14V battery uisng 5V input always that you won't exceed the 2A current of the module. Keep up!
They're making claims and I have both. This model is 25 watt per channel both channels driven, the 50 watt per channel both channels driven has a heatsink. Still loud
nice video dude !!!! i do not understand about electronic... and I got a doubt, how powerful should the batteries if I wanna more autonomy ... 3000mA? 5000mA? batteries ...
Fabio Almeida can I give you an important warning about 18650 batteries, or any lithium batteries out there for that matter- there are a lot of FAKES. you aren't going to find any real batteries to much higher than 3000mah, if it's a lot more then it will be fake. Beware where you buy them too, look for reviews if you can. Also like others have said, for safety, use protected batteries if you're not sure what you're doing. If using more than one, buy a BMS system. Necessary for keeping the cells balanced.
They sound great with my Memphis audio car speakers. I was curious if I could add mini subwoofers to my box, and how I would wire that. Appreciate any feedback!
You need an audio crossover board, which takes a single input and divides it by frequencies for woofers and tweeters. Look for one that can handle the 50W per channel and use one for each. The markings on the board should be self-explanatory. Also, I'm not 100% sure but most probably it would be better if each speaker has the same impedance. (4ohms, 6ohms, 8ohms...)
4 Android | Tobias Scharsching not too much, im running it at 12v 3,5amp and it work perfectly (even at 1,5a, but this ampli is not 100w, thats Chiness marketing, in reality it's an 50w(25+25w) 😊
Good job my friend but you don't even have 50W right there. First you used only one channel, that's 25W and then you said it your self, at max power it draws 1 Amp. with 15V, that's 15W because (W = E x I) or (Watt = Volt x Ampere) This is only power consumption, power at the speaker is gonna be less than that. Anyway you made a good bluetooth speaker.
Awesome video i have a question those each channel is 50 watt been 100 watt in total or is 25 watt and in total is 50 watt thanks and looking forward your answer.
Depends on the board. There are similar ones in looks that have 25W in each channel making 50W total and there also are ones with 50W in each channel making 100W total. As I understand, his is 50W per channel.
I get output from aux only not from speaker channels...but aux is input ? it's act only like Bluetooth reaciver what could be the problem can any one tell?
Amazing!!!!! I love it you deserve a like please can you make another video in which you can add an input and also have buttons for echo, bass, treble and etc please if you can try to make a speaker like this a humble request from me
Great video! Do you have all the links for all the components that you used? Batteries, battery charger, digital controls panel, etc. Also I do not have speakers so do you have a link for some good sounding Speakers no to pricey I can buy? Plus I need mounting brackets for all the components since I’m building a mobile speaker box that will be moved around a lot. Thank you again!
please sir,Would you like to tell me about my problems,I have a old modal amplifier which is don't have any Bluetooth connection and laptop connection and I want change it, into the new modal (which would be have laptop connection ).how to I change it into the new modal.Can you help me by videos
you know, you can bridge the stereo to mono and have twice the power on those, i've done it at line level with two 4,7k resistors, one in each positive and then soldered together.
Raoni Rafailov how do i make stereo to mono amps? I have that problem 2. I only use 1 speaker. Now i use mono AMP, but got no bleutooth. If i use bleutooth i cant use it on the same power.. some how?! I use li-ion with pcb
is it possible to convert a "JBL EON 510" (speaker) & "samson auro d1200" (active subwoofer) converted to wireless? If so, what do i need? tyvm from ur help.
A few questions here. You only connected the left output? What a waste, many songs will sound wrong. Is there a way to have the stereo combined in a mono output? When I tried to connect both outputs, the volume goes down a little. And I have no idea if I'm doing something wrong here. Also, why do you add a capacitor? My speakers are already made to connect to an amplifier so won't connecting the standard wire be sufficient? And another thing. With a bass test I noticed there's very little bass. I think my speakers should have more bass than this. Is it the bluetooth amplifier? The sound quality is OK, but I want more bass. Is there a way to connect a subwoofer?
Hi Electronoobs and others. I have a question. How to do a safe battery charging for 12V battery ? I have 2 batteries from UPS and I want use them for build my outdoor BT speaker , and I worries about charging process.
dear i want to know that i have one 4ohm 8watt speaker and two 3 watt speaker and i have an ampllifier board which can transmitt two 25 watt . so this board is suitable for me because i have 8 watt and two 3watt speaker and also please tell me that here is two output pins each for 25 watt so how i can connect my three speakers with these two pins please help me i am waiting for your reply
Cricket channel don't know yet, this electronics world is so big. First I want a master and maybe doctor and teach students. or maybe microchips development. can't know yet...
Hi... Very nice speaker and well made video too. As this is a stereo amp being used with a mono speaker, will the sound quality not suffer? Cannot you connect both left and right connections on the amp to the same speaker?
Yes, if you have a song with stereo effects, you won't hear one of the sides. And yes, you could connect both outputs and maybe that's what I'll do when I'll have some time to open the speaker once again. Thanks and keep up!
So I have this same board on a 12v 7 amp lead acid battery and I'm getting a ton of noise expecially between songs. Should I isolate the ground, get a different battery, or something different? I was also wondering if anyone elses boards where doing this. This is my 2nd one of these boards
Can i use a tp4056 to this project? I have 2 pcs of 18660 battery and i want to use tp4056 to charge it.is it ok? Someone can help me how to connect it..
Yes, but charge them in parallel because 4x3.7V is way too much for the charging module. What I mean is taht you will have a 3.7 battery but with way much capacity. Using that module you can't charge higher voltages. You could use the step up module to increase the voltage from 3.7 to 12V for example.
Didn't you blow up your speaker after a while cause you playing only one output? If I'm not mistaken, as long as I know speaker drivers should be the same power handling on the both output at the same time ??
hey electronoob, coud i use a small car battery that gives 12volts for this project?. and if i woud use him is it possible to just charge it with a car battery charger without the power boost converter?. and if al work. what kind of battery power indicater shout i use to make sure it wont go below a low power point?. great video btw!
Q: if you use that board that your using, wont it destroy your battery? The 7,4 volts or 14,8 volt in sirie lipo batterys dont like the 4/5 volts that come out of the charging board right?. It want a higher voltage to power itself up. Greatings denwex
The volume of this speaker is controlled with push buttons. To add a volume potentiometer is quite difficult. See my other bluetooth speaker project: ruclips.net/video/xN5ywcJ4pWU/видео.html
great vid but please can you explain what you used for the "battery charging/protection, status lights, and some more control buttons".? i have purchased this bluetooth board and a boost controller but need to kno what else i need to purchased to protect the batteies charging etc.. thank you
Hi there. I recommend you to use this schematic for the battery: www.electronoobs.com/images/Circuitos/tut_9/safety_charging.png I've changed mine because in this video I have no safety charging of the battery. charging module: www.ebay.com/itm/10PCS-5V-Micro-USB-1A-18650-Lithium-Battery-Charging-Board-Charger-Module-/201039030988?hash=item2ecedc2acc:g:sNoAAOSwiO9XigWW boost converter: www.ebay.com/itm/DC-DC-Boost-Buck-adjustable-step-up-down-Converter-XL6009-Module-Solar-Voltage-/161270864741?hash=item258c7e1b65:g:-soAAOSw9GhYfJW8
vvrench no, the batteries should be under 5 volts. if you don't have li-ion batteries and just have batteries with voltages over 5 volts you should use a different charging circuit.
ELECTRONOOBS sir sorry but i am confused.. you said that you used 4 batteries totalling to 15v right.. can you recommend and battery safety board for me to use? thank you
Hello.if i use tp5046 module micro usb to charge the battery , do i need to put a protector voltage? Can someone help me.i have tp5046 micro usb and 4 battery 18650 .i dont know how to connect it. And i dont know if it is possible to charge 4 battery
+prettylittleditty89 I have 4 of these bluetooth amplifier boards and I found that a laptop power supply is practically perfect for these amplifier's. Search E Bay, u can get the power supplies for around $10 or so. Look at pics, details or description for an out of 19v at 4 amps give or take. I've never had a problem using them and there regulated at the output voltage so u won't have to worry about overvoltage. You may have to manipulate the power jack. Good luck!
IMPORTANT: Check the safety battery charging schematic (video description) before you start this project. In the video I didn't use any kind of charging module and this project needs that.
www.electronoobs.com/images/Circuitos/tut_9/safety_charging.png
So if it has 50w for each channel.. Can you combine them and have one channel that is 100w??
MultiTerpen the literature mostly says no. What work around have been sited is a transformer for impedance matching or a separate circuit to turn the 2 amps into a single differential amp. cheaper to purchase a bigger amp. there are lots of discussions of this on the 'Diyaudio' forum.
Shit, 50w per channel @ 95% THD. More like 5 watts, @ 5% THD. You want to bridge this? Seriously, that thing doesn't have any capacitance to do such a thing, let alone a power supply to handle it. It may be loud, just don't let it dip under 100hz, it'd shit itself with any loud volume.
Look around for any reputable amplifier maker (Alpine, Rockford Fosgate, etc) for circuit repair. Look at the components, such as capacitors, inductors, etc. This little amp is a joke, for 100w..
You need to balance them batteries. No two or more batteries are the same and when you charge these lithium batteries of any kind in a series, they never self balance... Each of the two batteries you have consist of two 4.2v Li-Po packs per bank equaling a total of four wired in a series. What you have is a 4S battery which equals 16.8v and under a load it will drop to 14.8 so you need to charge them to 16.8v total and you can charge them bulk but without a BMS or a hobby charger one battery can be 3.8 and the next could be 4.4v and the next 4.2v and the next 4.4 which still equals 16.8v... In this case there's two batteries that are over charged by .2v and will lessen the life or even worse catch on fire and explode. I went on Amazon and orders a special wall charger that's meant for charging these batteries and I wired them so I could use a detachable balancing device that equals out the cells... If you want these 2 items let me know or I could also show you a good 4S BMS with balancing. I also have a unique idea that works great so let me know. I looked at your charging method and advise against it for one both batteries have different voltages 3.6 and 3.7v and using a bunch of these wired in parallel would allow you to get away from not balancing but you will lose amperage needed to power this device because the more voltage you gain takes away from your amperage, so more voltage less current. One TP4056 only puts out a max of 1amp so say you charge 6 cells using that method only allows 0.1666 up to 0.167amps per battery so your charge time will take forever and low on amperage.
The wires coming out of these batteries are meant to balance and charge these batteries... Most have a bulk charge positive and negative and the other set of wires balance the batteries, but I figured out how to charge and have them balanced using four 5v phone charging adapters and four TP4056. NOTE: You need isolation using these chips so wire your batteries in a series then hook up a TP4056 to each battery in parallel, yes it works. But you need 4 separate 5v chargers. You can glue the wall chargers down and wire the AC part in parallel and run one AC to the wall. 16.8v
According to the datasheet you're only getting around 12w per channel at 10%THD at 15v. Since you're hooked to three speakers in the box each one is getting a whopping 4 watts:) Also stereo signals tend to sound like crap when you can only hear one side.
I would have used the speaker terminal on that cabinet and hooked it up to power the matching unmodified matching speaker for even better stereo sound
Yeah same. Why not use the exsiting speaker terminals on the back for the other channel hey!
I have an extra 300w polk audio amp board ... I could make a beast of a wireless speaker , I would want better battery life though and maybe FM radio
you used lipos but you didn't got a bms or something to cut of power went the lipos are low.. you will kill them if the voltage get to low
Yes, you are right and as I say in the video this project is not ready yet. I have already installed the battery charging/protection, status lights, and some more control buttons. Maybe I will upload a new video with the new improvements.
Electronoobs can i use 18650 batteries?
Yes. You will need 2 or more in parallel if you use this schematic: www.electronoobs.com/images/Circuitos/tut_9/safety_charging.png
hey, the video with the upgrades ? hmm ? :) the status lights, charging/protection.... c'mon dude !
i would recommend using charging module made specifically for more baterries. Something like that for 2 baterries.
www.aliexpress.com/item/4000053248089.html
I make things like that two! really happy to see that other people share my passion!!!
I love how cheap amplifier boards are. I really thought I’d have to solder everything onto a pcb hahaha.
Nice project! I had something just like this in mind. I was going to ask how to put the board in pairing mode again, after I had it paired with my phone, but apparently after being disconnected for a few minutes, then powering off and on again, it goes back into pairing mode. This is a really cool little amp! I had it driving my home stereo speakers and they are 150 watts! I had the input set to low because like you said, it doesn't sound good on the higher ones. I never thought about turning the volume up with the buttons. Mine didn't come with a case like some peoples did. I can make one though. I have plenty of rigid plastic. I now have this amp connected to my computer and connected to some small Pioneer book shelf speakers and they sound great as well.
royal blood and acdc.. deserves a thumbs up just for tht.
great music. Loved hearing the Arctic Monkeys. As mentioned at the end, you are only connected one channel. That means you are losing all the sounds mixed to the other channel. One solution is to connect the other speaker output to a second speaker. Another is to use the rather simple circuit to mix it down to mono so although you lose the spatial separation you don't lose whole instruments, effects or vocals. I wish I could recall if there was anything special required to mix down. I used to do it 25 years ago and I always basically used a 2 channel mixer and panned left hard left and right hard right. I did it is raw circuit once with an audio engineer and if memory is serving me there was slightly more to it that just bunching the P and Ns together on the channel output. But perhaps I am wrong and it IS that simple. Vague memory of phasing issues. Ah shoot, too long ago to have trustworthy instructions for you.
It actually puts out 20-25w per channel and its an awesome amplifier
I recommend you put an alumina radiator on the chip, such diffusers will be left without an amplifier
The batteries you are using need to be charged with the correct charger and sequence. You need a balancing charger that will balance them at the correct voltage. If you over charge them they will explode.
I think they have a built in bms
Your math is failing so bad. "100w amp, 50w max used b'coz it's single channel, 40w speaker used" the amp is actually only 25+25w by manufacturer ST at optimal conditions in stereo at THD+N 10% (which you don't really want to listen to - that means alot of hiss) so you're basically stuck at about 7.2 watts according to the spreadsheet. And you said it well, the batteries never draw over an amp, because how could they! Damn they aren't even using that 14,4w that they would draw with one amp.
KandriX's Channel not only that but he states it's only drawing about one amp of current. my guess is a 12 volt output(just a guess, 12 for the board, 5 for the bt adapter, which would tell me that at max volume he's only drawing 12 watts per channel RMS, as he stated he is barely drawing one amp. way below the boards capability... am I wrong or right?
They would be drawing not more than half an amp and it would sound like crap. As I said, 10% THD+N is not a pleasure to listen, as everyone that ever worked with amplifiers knows. The "DIY 100w amp" is nothing more than a clickbait, based on one's arrogance or just dumbness to really calculate something. Maths is real, this title is fake.
Oh I would really love to see this amp draw 2 amps, I really would. Hook it to 2 ohm speakers and watch it burn my friend.
KandriX's Channel I've tested it on a 2ohm & tried to fry the amp & it worked fine
well, the channel name is ElectroNoobs so, pardon him, he's noob. jk.
You should try to print the handle sideways it'll add more strenght to it, nice video, thanks for sharing!
I was thinking the same thing, but would he still be able to have the Logo on the top of the handle ?
I hear a Disturbed song, I give a like! Well done on the whole build.
TDA7492p is 2x25w. TDA7492 is 2x50w. The yellow boards are usually the ones that uses TDA7492 and has heatsink on the chip
You are absolutly right. I'll add some tags in the video to advise that! When I bought the board the seller sold it as a 50w+50w and I haven't double checked the datasheet. My bad... Thanks for your com. I hope you like my videos :)
Hey, thank you for this video which was very interesting for me, but would you maybe also record a video, in which you show the whole wiring process because I'm not quite sure how to wire all the cables and what adapters are really necessary. I'm sorry for any mistake I've made but English isn't my native language.
hi there. Thanks for your com. I will definitelly make another video on this project since this one is not finished yer. I have to add a battery safety charging module and some indication LED. But I don't know when I'll be able to make that vide because I'm already working on a few projects. Thanks again and keep up!
You should have a bms with balancer for this batterys. You will damage them long term if you charge them like that.
1A at 15V means 15W. Nowhere near 100W.
this is the consumption rating, not the output..
Kaja Aljoša 100w output with 15w input. Green energy jebote
100W is peak, not continious..
You're never going to get even 100 watt peak with this circuit. It's a bald-faced lie, plain and simple. The Chinese either have no regard for mathematics and physics or they have no regard for the truth - take your pick.
Don't you know the output is never greater than the input power wise?
Technical things aside, the selection of songs is also awesome! AC DC & Arctic Monkeys \m/
Indeed!
I’m making my first build I have purchased a few different board to find out what one will sound better I also purchased some amp plates I think that way is easier
Look at the Data sheet. This amp puts out 25w X 2. The ones saying that it is 50w are the deceptive ones. The ones that list it at 25W are the ones that put the correct rating. 25w is plenty of power for the record and very loud.
Also, that schematic to charge the LiPo batteries is just dangerous which can easily lead to an overcharged battery.
You r right with both of those things! I've mixed up the power due to eBay and for the batteries I have already installed a safty battery charging module. Thank you and keep up!
It does 2x50w at 24 volts
Hi. How do you know what is the appropriate capacitor exactly and its features to use for cutting the frequencies you wish eliminate? Thanks!
A 50W amplifier into a 40W speaker is not what I call 100W speaker... Also at maximum volume it drains about 1 Amp wich is just less than 15W, so is impossible to create a 50W output.
Anyway, good proyect. I'm thinking more less the same, but using an amplifier and an MP3 player with radio and bluetooth.
Did you put a dummy load on the amplifier channel that's not connected to the speaker?
Pretty mad ngl, might use this sort of idea for a future project
Humdan Khalid wow, glad you like it. I hope that your project will go well. keep up.
Really an awesome channel. I am super impressed. Just saw your unmasking and even more impressed. Way to go kid(yea I'm old..lol) I plan to do this project with one of my sons.... Question, have you updated this with the charging cut off and screen. I looked in your vids but did not notice it. I could have missed it. Again THANKS for the good work!
NM just saw in comments.....DUH!
I made stereo speakers whit same kind of board. I use 18650 cels 4s4p configuration. Batery last like a moth.
Hi! I was thinking that it would be great to have the possibilty o charging the battery with an external battery, like those we use to charge out phones when we are on a trip. I think a normal external battery provides 5v, ¿if we install an 5v-14.3v transformer instead of an 12v-14.4v it would be solved? Great video! Congrats
You could use this module to safe cahrge the battery using 5V USB : www.ebay.es/itm/2Pcs-Micro-Usb-1A-Module-De-Charge-De-La-Batterie-Tp4056-Precise-Nouveau-Diy-C-/131957026861?hash=item1eb940702d:g:yFEAAOSwo4pYHUwL
You should add a boost module to the output of this module like this one: www.ebay.es/itm/5pcs-MT3608-DC-DC-Step-Up-Boost-Power-Module-Max-2A-Adjustable-for-Arduino-TE686-/282381038539?hash=item41bf38b3cb:g:l34AAOSw32lYuIhl
Like this you could charge a 14V battery uisng 5V input always that you won't exceed the 2A current of the module. Keep up!
but sould I change the converter used in the video?
Thanks
nikoloko112 how many 18650 battery i need..and it can support the 4 battery to charge with that module tp4056 module
Thanks for all videos , i like all videos you have , i am always still waiting your next videos
They're making claims and I have both. This model is 25 watt per channel both channels driven, the 50 watt per channel both channels driven has a heatsink. Still loud
I bought the only 50W amp I could find, but it has no heatsink. Have I been fooled?
Greetings,
Do a vedio how match amps and speakers.
25w at 10% thd... and 20v power... it's more like 15w... not a big deal though, still sounds fine.
nice video dude !!!! i do not understand about electronic... and I got a doubt, how powerful should the batteries if I wanna more autonomy ... 3000mA? 5000mA? batteries ...
Fabio Almeida can I give you an important warning about 18650 batteries, or any lithium batteries out there for that matter- there are a lot of FAKES. you aren't going to find any real batteries to much higher than 3000mah, if it's a lot more then it will be fake. Beware where you buy them too, look for reviews if you can. Also like others have said, for safety, use protected batteries if you're not sure what you're doing. If using more than one, buy a BMS system. Necessary for keeping the cells balanced.
They sound great with my Memphis audio car speakers. I was curious if I could add mini subwoofers to my box, and how I would wire that. Appreciate any feedback!
You need an audio crossover board, which takes a single input and divides it by frequencies for woofers and tweeters. Look for one that can handle the 50W per channel and use one for each. The markings on the board should be self-explanatory.
Also, I'm not 100% sure but most probably it would be better if each speaker has the same impedance. (4ohms, 6ohms, 8ohms...)
youre channel is the best
Thank you very much!
You have to balance those batteries or they will not charge evenly so find a BMS "Battery Management System"...
Have been looking at this amplifier for a while now thanks for doing this project I will definitely get a couple now👍🏻🇦🇺
Thank you. When you buy them if you have any question, just ask :) Keep up
Electronoobs Hey!
Can you tell me how much current the amp needs at 12 V?
4 Android | Tobias Scharsching not too much, im running it at 12v 3,5amp and it work perfectly (even at 1,5a, but this ampli is not 100w, thats Chiness marketing, in reality it's an 50w(25+25w) 😊
Good job my friend but you don't even have 50W right there.
First you used only one channel, that's 25W and then you said it your self, at max power it draws 1 Amp. with 15V, that's 15W because (W = E x I) or (Watt = Volt x Ampere) This is only power consumption, power at the speaker is gonna be less than that.
Anyway you made a good bluetooth speaker.
Awesome video i have a question those each channel is 50 watt been 100 watt in total or is 25 watt and in total is 50 watt thanks and looking forward your answer.
Depends on the board. There are similar ones in looks that have 25W in each channel making 50W total and there also are ones with 50W in each channel making 100W total. As I understand, his is 50W per channel.
This is so awesome. Definitely one of my next projects :)
Very well explained each and everything thanks bro 🤘
Good proyect. I am using 2, speaker 10w 4 ohm. But it does not sound very good, Can I use a capacitor, how many uf/volt.
Most difficult thing is finding right ohm speak for amplifier 😢
Well done!
Oscar Gonzalez thank you very much:)
Hello, nice project. Can you elaborate about the capacitors you used as this board even with low gain produce some "hiss".
Regards.
My Bluetooth is not working can tell me how to replace Bluetooth or what to do ? I have ion block rocker
Can you share the Wiring diagram with the namings of all the components
I get output from aux only not from speaker channels...but aux is input ? it's act only like Bluetooth reaciver what could be the problem can any one tell?
Amazing!!!!! I love it you deserve a like
please can you make another video in which you can add an input and also have buttons for echo, bass, treble and etc
please if you can try to make a speaker like this a humble request from me
Great video! Do you have all the links for all the components that you used?
Batteries, battery charger, digital controls panel, etc.
Also I do not have speakers so do you have a link for some good sounding Speakers no to pricey I can buy?
Plus I need mounting brackets for all the components since I’m building a mobile speaker box that will be moved around a lot. Thank you again!
please sir,Would you like to tell me about my problems,I have a old modal amplifier which is don't have any Bluetooth connection and laptop connection and I want change it, into the new modal (which would be have laptop connection ).how to I change it into the new modal.Can you help me by videos
can i use 12v moped battery and if my battery is 12v do i need the DC-DC Adjustable Step Up Power Module Booster Power Module
3:07 Can we charge a Battery pack directly with a buck converter?
you know, you can bridge the stereo to mono and have twice the power on those, i've done it at line level with two 4,7k resistors, one in each positive and then soldered together.
Raoni Rafailov how do i make stereo to mono amps? I have that problem 2.
I only use 1 speaker.
Now i use mono AMP, but got no bleutooth. If i use bleutooth i cant use it on the same power.. some how?!
I use li-ion with pcb
is it possible to convert a "JBL EON 510" (speaker) & "samson auro d1200" (active subwoofer) converted to wireless? If so, what do i need? tyvm from ur help.
A few questions here.
You only connected the left output? What a waste, many songs will sound wrong. Is there a way to have the stereo combined in a mono output? When I tried to connect both outputs, the volume goes down a little. And I have no idea if I'm doing something wrong here.
Also, why do you add a capacitor? My speakers are already made to connect to an amplifier so won't connecting the standard wire be sufficient?
And another thing. With a bass test I noticed there's very little bass. I think my speakers should have more bass than this. Is it the bluetooth amplifier? The sound quality is OK, but I want more bass. Is there a way to connect a subwoofer?
Hi Electronoobs and others. I have a question. How to do a safe battery charging for 12V battery ? I have 2 batteries from UPS and I want use them for build my outdoor BT speaker , and I worries about charging process.
dear i want to know that i have one 4ohm 8watt speaker and two 3 watt speaker and i have an ampllifier board which can transmitt two 25 watt . so this board is suitable for me because i have 8 watt and two 3watt speaker and also please tell me that here is two output pins each for 25 watt so how i can connect my three speakers with these two pins please help me i am waiting for your reply
Nice project really like it!!
thank you!
ELECTRONOOBS nice work ......what u r perusing in engineering
Cricket channel don't know yet, this electronics world is so big. First I want a master and maybe doctor and teach students. or maybe microchips development. can't know yet...
Perfect job man.
Why charge to 14.8v if they are standard lithium full would be like 16.8
Hi... Very nice speaker and well made video too. As this is a stereo amp being used with a mono speaker, will the sound quality not suffer? Cannot you connect both left and right connections on the amp to the same speaker?
Yes, if you have a song with stereo effects, you won't hear one of the sides. And yes, you could connect both outputs and maybe that's what I'll do when I'll have some time to open the speaker once again. Thanks and keep up!
No, You can NEVER connect the two outputs in parallel! They will fight each other and ultimately the magic smoke will arise.
Is there another way to do it?
bro you are my inspiration well done :)
This amplifier delivers only 25w per speaker. Look at the datasheet of the main Chip.
Fantastic job thanks
Could you use this to make a small guitar amplifier?
So I have this same board on a 12v 7 amp lead acid battery and I'm getting a ton of noise expecially between songs.
Should I isolate the ground, get a different battery, or something different?
I was also wondering if anyone elses boards where doing this. This is my 2nd one of these boards
Is there any annoying voice prompts in the circuit? Or jitter noise while inactive? Or popping noise between power toggle?
the capacitor you used whats its voltage?
Can i use a tp4056 to this project? I have 2 pcs of 18660 battery and i want to use tp4056 to charge it.is it ok? Someone can help me how to connect it..
Hi! I would like to build a battery made up of 4x18650 batteries, the Charging module that you
recommended in description may be fine?
Yes, but charge them in parallel because 4x3.7V is way too much for the charging module. What I mean is taht you will have a 3.7 battery but with way much capacity. Using that module you can't charge higher voltages. You could use the step up module to increase the voltage from 3.7 to 12V for example.
ELECTRONOOBS oks thanks a lot!
ELECTRONOOBS 3.7 to 12v can it be fine even if the total voltage is 14.8v?
Here's one way yo can redo this: Make it a portable 2.1 system! (2 speakers that do not need to be modded and a sub that has to be modded)
very nice
Didn't you blow up your speaker after a while cause you playing only one output? If I'm not mistaken, as long as I know speaker drivers should be the same power handling on the both output at the same time ??
Good one..what's the current rating?
try this with car speakers they are way cheaper from reputable brands than bookshelf
Eu tenho 4 baterias 3,7 ligadas em série, como eu carrego elas com um regulador de tensão, qual fonte ideal?
hey electronoob, coud i use a small car battery that gives 12volts for this project?. and if i woud use him is it possible to just charge it with a car battery charger without the power boost converter?. and if al work. what kind of battery power indicater shout i use to make sure it wont go below a low power point?.
great video btw!
can i use mopeds battery and how i use the up to down module thing
great project
can you please give me the item list
how are you getting stereo sound with only one speaker being hooked up to a stereo board?
can I use this board with weaker speaker from old tv,I don't know how many Watts ?,I only know it is 4 ohm
Can you use the speaker while charging? &Is it possible to change the name of the Bluetooth module?
Why didn't you get a mono amp? Now you are hearing only the left or right channel.
Yes you're right. But I will change this project to a stereo one. I will merge 2 speakers in a homemade case in a future project.
I want to do the same, but I'm stuck on the part where you can only use one of the sides (LHS or RHS) isn't that a compromise?
Which wires you can use to connect everything together ???
Can you tell me if power supply jack is center positive or center negative ? thanks
Q: if you use that board that your using, wont it destroy your battery? The 7,4 volts or 14,8 volt in sirie lipo batterys dont like the 4/5 volts that come out of the charging board right?. It want a higher voltage to power itself up.
Greatings denwex
can i use the rechargeable lead acid battery for this build? 12V 1.3 Ah
Great content! Would you be able to solder a volume dial on to it? I am trying to make vintage radio into a speaker
The volume of this speaker is controlled with push buttons. To add a volume potentiometer is quite difficult. See my other bluetooth speaker project: ruclips.net/video/xN5ywcJ4pWU/видео.html
Do you have a playlist, I like your music style
It is nowhere near 100 watts. You are probably getting around 8.5 watts at 0.1% THD, given your voltage is around 15v.
great vid but please can you explain what you used for the "battery charging/protection, status lights, and some more control buttons".? i have purchased this bluetooth board and a boost controller but need to kno what else i need to purchased to protect the batteies charging etc..
thank you
Hi there. I recommend you to use this schematic for the battery:
www.electronoobs.com/images/Circuitos/tut_9/safety_charging.png
I've changed mine because in this video I have no safety charging of the battery.
charging module: www.ebay.com/itm/10PCS-5V-Micro-USB-1A-18650-Lithium-Battery-Charging-Board-Charger-Module-/201039030988?hash=item2ecedc2acc:g:sNoAAOSwiO9XigWW
boost converter: www.ebay.com/itm/DC-DC-Boost-Buck-adjustable-step-up-down-Converter-XL6009-Module-Solar-Voltage-/161270864741?hash=item258c7e1b65:g:-soAAOSw9GhYfJW8
ELECTRONOOBS thank you for the reply.. does this mean i should use a 5v usb charger to the the 15v batteries?
vvrench no, the batteries should be under 5 volts. if you don't have li-ion batteries and just have batteries with voltages over 5 volts you should use a different charging circuit.
ELECTRONOOBS sir sorry but i am confused.. you said that you used 4 batteries totalling to 15v right.. can you recommend and battery safety board for me to use? thank you
I'm planning add battery pack with BMS the output 24V & 15A. It can take 15A?
does anyone know what is the current consumption of the board he is using? please
Parabéns!! How long does it last on the batteries?
Hello.if i use tp5046 module micro usb to charge the battery , do i need to put a protector voltage? Can someone help me.i have tp5046 micro usb and 4 battery 18650 .i dont know how to connect it. And i dont know if it is possible to charge 4 battery
you need to conect the batteries in paralel (Google)
That group all the V 4*3.7V = 14.8 volts, and then conect it to the board
+prettylittleditty89 I have 4 of these bluetooth amplifier boards and I found that a laptop power supply is practically perfect for these amplifier's. Search E Bay, u can get the power supplies for around $10 or so. Look at pics, details or description for an out of 19v at 4 amps give or take. I've never had a problem using them and there regulated at the output voltage so u won't have to worry about overvoltage. You may have to manipulate the power jack. Good luck!
Thank you. And yes, laptops transformers are good for this project.