From what I've read, the sweet spot for the TPA3116 is right around 19 volts. If you provide some 4700 uF caps in the supply, you may also get better sound. I hope you make a video when you hook it up to your main speakers. It would also be interesting to see how much difference there is between Bluetooth and line-in.
BlankBrain same amplifier I'm connect 12volt 3a supply and load 15watt each channel but sound not working in speaker it's any falt other wise Can improve my voltage and amperes ?
After trying three TPA3116D2 based amplifiers I ran into the same conclusions as "BlankBrain's" I operated the amps off 19 Volt 4.7A Dell laptop PSU's with 4700uf filter caps, Alternatively used wired and BT input sources. Sound great. FYI! on public domain sites there are 3D printing plans for cases that fit some of those Bluetooth TPA3116 amps. I tested with Definitive Technology surplus bass drivers and had to apologize to the neighbors. They claimed their dogs filed for relocation.
@@avrahamchamish521 I concur as well. If you want a really well made laptop supply then the best I have come across are the Toshiba ones. Beautifully made and properly screened. I have a few Dell supplies here but haven't tried them - not least because they are attached to laptops and might be missed. Also they don't have the standard barrel connector. But they should be decently made too, but the Toshiba ones are exquisite. I was really surprised how much went into them.
Thanks for the review! The one thing that I don't readily find on these boards ( Amazon and so on ) is if they have that annoying "Blue Tooth Audio" voice. Maybe I missed it, but is there an on-off switch? Does it pop when you turn it on or off? And how do you think the Bluetooth performance will be once it's maybe mounted inside of an enclosure?
I've built two ammo-box bluetooth speakers using coaxial speakers made for cars, works really well. I'm powering them by a 7,2Ah AGM battery and mounted a charger inside the box with a "cicle of eight" connector for 110/200V on the outside. Also mounted a small LDC panel showing remaining battery. Since the steel box acts a bit like a Faraday cage, I had to solder a tine coaxial cable to where the base of the surface mounted antenna on the board were, scrape off the rail, thus deactivating the original antenna. The cable I soldered I then connected to a Wifi connector that I mounted on the box and then a Wifi antenna on the outside (Both bluetooth and Wifi uses 2,4Ghz so it's perfect). Works quite well and has both good range and power, even though I could only mount one battery in the box because of limited space, two batteries giving 24V would be better.
Great info. Thanks for talking about this being a balanced output. I wasn't aware that I couldn't use a common ground. I bought a new speaker that likely has switches and such. I didn't know they bridged negative wires together which would cause amplifier failure. Thanks.
Excellent analysis, made my day I am building a 5.1 system and isolating woofer completely paired with it's own amp, this helped me decide on what configuration to use as I am using 12V to make it portable as well with a Li-po battery pack. So in theory I should still be getting ~50/~50 L/R with ~50W 2.1 channel or 2x(50W+50W) + 2x(~50W) making part of the system portable while keeping overall performance good enough.
Hi Dave, If those test points were not available, could you have simply connected your scope to the speaker connectors? Could you show how you would use your scope to test a typical home stereo? Where you make connection points etc? Thanks for sharing and thumbs up.
I got this board for my car, but do you know how to make the starting volume of the board itself not completely maxed out?? Every time I turn the key on the beeping sound is deafeningly loud!
I bought one per your recommendation! I mounted it on back of some Bose bookshelf speakers I was not using that I got off ebay! Got it paired with my chrome book it sounds and works great very pleased. Thanks!!
Hi Dave, I bought an amplifier like this after watching your video, it's great, my question is does the ON/OFF switch stay in the ON positon when the power sauce is disconnected? or does it automatically reverse back to off, the reason i'm asking is because I would like to install a toggle switch on the outside of the cabinet to turn the amp on and off, my thoughts were to cut the cable after the transformer and connect to a toggle switch, any help appreciated. Trev
At 18:00 the signal seems to be cropped, looks like instead of peaks there are flat lines. Does that mean that the amplifier is flattening the peaking or the mp3 chopes the waveform?
Really excellent video! For the audio waveform demo at 28:40 you point out 24 volts on scope. Were your leads across the speaker out terminals, and measuring entire balanced output voltage, or was one lead referenced to ground? This is a balanced output amp, I think, so it would make a difference in this amp. Have you done a measurement with sine waves? Have you tried the Bluetooth out points for audio in? I work on tubes only so far but really intrigued by this digital method, now that your scope showed me what is really happening in that tiny amp.
Thanks for the update, I just purchased one off Amazon. My wife wants an expensive surround sound to play movies off her phone. I have about 5 older speakers from an old surround sound system. Badda'Bing'Badda' Boom. I hope I can get this going for 19.99. Lol
Your 1/4 wavelength at 2.4Ghz used commonly is 31.25mm which is 1.23", not 1.5" And considering BT is 2.45Ghz, that length is closer to 1.20". Trim your wire a bit and you may increase your range slightly. Best to cut that PCB squiggle and attach there a short run of coax center and ground that should be available and run that to an antenna that is a minimum of 1/4 wavelength away from the dome-peak of the electronics to reduce the floor interference. Thanks for the video, by the way.
Hello! Are your speakers powered by or powered by the amplifier board? What is the volts and amper of your source? My Bluetooth syncs but no sound comes out.
I just love these credit card sized BT Amps. If you ask me, this video could have easily doubled in time and I'd be happy, but still a great video. I have one that uses the tracks from the PCB and they set the BT module on the PCB and used the tracks on the board as a antenna, they did use liquid tin not solder and that allows me to go all over the house and outside and I have real aluminum siding.
@12voltvids How is it able to put out 120 watts per channel 2 channels driven so 240 watts from 24v @ 3.2 amp? I'm stuck on stupid here, I purchased 24v at 4 to 6 amps, but 240w divided by 24v = 10a if it was 100% efficient and it says 3 amps needed?
Can you please clarify if the pin out header (LGR pins) on the board are outputting the same audio as the Bluetooth? Does that mean I can connect that aux output to another amp to achieve a 2.1 setup or 4 channel setup? Is the output line level? Thanks in advance!! 😊
Hello, can you please advice me with buying a similar amp, please? I need something for a ~50W, 3 way, old Sony, 6ohm speaker. I want to make it wireless, portable. What do you recommend ? This module or maybe ,meanwhile, you tested something else, better than this? Thank you so much ! Chris
hi, at 14:00 its not an input but its output as for head set or you can add another amplifier to the board, i have tried that and i foud it output, i have something to ask about, am trying to connect TPA3116D2 the normal board with Bluetooth decoder so i can use multi inputs like USB, AUX, SD CARD, Bluetooth but the main problem is the Ground loop noise, do you have aidea so i can avoid that nise? thanks,
Is it 2tpa3116d2 with 1 tpa3116d2 per channel or it got only 1 tpa3116d2 onboard .? If it got to it can output around 100watts per channel more or less at 2 omh load..
Hi! I wanna ask the preset volume once you turn on the amp? Because some bluetooth amp sounds so loud once you powered on then you can only adjust the volume once connected.I want to consider buying this one if sure its not automatically in a full volume once turn on😅
what about using a Slim_Jim antenna for 2304mhz or 5ghz and I am thinking about replacing the WIFI antennas in the back and front of my ACER Aspire TC-220 with Slim_Jim antennas for 2304mhz and 5ghz.
Textbook review! It's all there: general info, technical details, improvements and mods, running it under various conditions... excellent work! Thanks! ps: the Banggood link you provided ... do you get Banggood points when someone purchases this module? Coz I plan to buy one and it would be great if you could benefit from that too.
neophyte question: if I add if I add this amplifier in the car and connect the speakers from the car already connected to the car radio, what can happen ??? excuse the honor
Hi , great review...i have the board also and you mention that the out put where you solder the ground on, also an input can be.....did you try that out?...i like to hook this up to my broken active loudspeakers but i want no latency, for music playing purpose ..thanks in advance Jody
Hi , You mean Audio Ode? like Alternative Audio output? Hope to answer this question because i have this board also and i want to add more mini amplifier to this board
Hi, i really like your'e video and I learn a lot, but i have a little question, it is possible conect a signal to the board without the bluetooth reciever?, this is because I keep in mind build a guitar amplifier 200 Watts, and i need connect a guitar signal to amplify. Hope You can help me.
I'm connect 12v3a dc power supply and load each channel 15watt. Amplifier start and pair bluetooth ok but sound not coming why? It's low power problem?
Nice mod and fun little board for DIY enthusiasts. Thanks for the range information for the wire length. Can that Osciloscope measure THD, WATTS AND DECIBELS?
Most of the time you would use special audio analyzer, say Audio Precision which is specifically designed for these kind of signal analisys. You can calculate power from the Vp-p measured by the scope. For distortions, frequency response (limited by sampling) it would be possible to use something like REW, ARTA loudspeaker measuring software and voltage divider. But some amps use floating outputs, like this one, and most A/B class common ground so you have to play around and be careful not to fry something by wrong hook up.
I've read through the comments and didn't see an answer fora question I have, which is probably simply due to my ignorance. My question is can I use this to power some speakers on my ATV? From the comments it seems as though these boards require some means of regulating amperage.. Can I not simply run power to this board straight from my atv 12v battery which is fused at 10A but ofcourse I can put and online fuse in place but that wouldn't really "regulate". If I can't use this board what do you recommend? It will be mounted in a waterproof p BOSS brand 6" Tube ATV speaker. I took apart the Boss tube and it surprised me that it came with a board style amp as I expected it to be in an enclosed style. Once again that's my ignorance with this type of information. Any advice or recommendations would be greatly appreciated.
I'm making a set of two speakers and building in one of BangGood houses Sanwu Bluetooth and amp boards. The one I chose has remote control over infrared.
Hi Kirk Nelson or anyone. Your expertise would be greatly appreciated. I built a portable bluetooth speaker box using the TPA3116D2 2.1 Amp.. Besides listening to music . I want to use it as a speakerphone for telephone Conference calling, I want to make telephone calls with this bluetooth speaker box.. What extra items do i need???
Thanks for the great video. I believe that you mentioned that the card has an input so would it then be possible to attach a 3.5m adapter to it in case I would prefer that? Any idea as to how much sound degradation for this BT vs. 3.5 m cable to your phone? Is the 30Watt @ 8ohm 24volt or 50Watt @ 4ohm 24volt accurate?
Bluetooth has compression, analog does not, but it all depends on how good the DAC is. Bluetooth can potentially be just as good if the integrated dac isn't great.
it's use full video. i am looking to buy it. i want to know if we can connected the antina which buy in shops? can be batter the just sold wire? thanks for sharing...
HI! @12voltvids! really enjoyed your video to the point i bought one amplifier board for myself. Now I have a question - is it possible to conect a volume control potentiometer switch?
Greetings from Brasil! Can you please tell me if you notice any "hiss"? Many of those bluetooth amplifiers have that problem, and I bought one that is similar to your amp.
I can't believe the difference that 1 1/2" wire made. I figured it would get slightly better but not as good as it did. Your neighbor was looking at you like, "what the heck is Dave doing now?"
Lot of information on the board however just need your suggestion please.. I have a pair of 30W 4ohms woofer and a pair of 260W 8ohms tweeter.. Im thinking to setup a tweeter - speaker per channel with them so could use them as right and left channels.. Its setup in a single housing.. Like to know if this board be suitable for this speaker setup.. if not then like you to recommend the best amp board with bluetooth please..
Hi there. Any chance you could answer a question for me? When you connect that audio in, in the middle of the board, does it override the Bluetooth? I'm wondering how that would function if I used it in a home speaker project :-)
Chris Bouncy Parker That audio test point I scoped in the middle of the board will not function as an input as the Bluetooth receiver mutes the amplifier when there is no active audio so that you don't hear any pops and clicks when not streaming sound. The mute input shuts the chip down completely. So you would have to disable the mute input to the amp chip in order to use this as an input.
Got you. That's a shame about the audio input. I don't suppose you would be able to point me in the direction of a board with similar spec, which also has a line in? Also, how long in mm was your Bluetooth aerial? I've tried to work out the equation, but can't make it make sense! Many thanks in advance!
If you jump ground with the upper left pin (TX I think) you can override the Bluetooth signal. You can always add a switch to ground it anytime you'd like.
Great review! Quick question: Can you connect your smart phone to more than one of these amplifiers at the same time? The reason I ask is because I would like to convert a pair of Bose 301 speakers to Bluetooth and install these amplifiers inside the cabinets, along with a lipo battery pack and charging circuitry, switches, etc. And, I would want true stereo - which would require two of these boards. Thanks!
No they only connect to 1 board at a time. This is a stereo board, so you could put it in a speaker box and wire to the speaker internal, and the other channel to the speaker terminals. Then just connect a single wire run from one speaker to the other. That will be a future project for another bluetooth board I have. When I get another pair of speakers.
I thought that might be the case. So, it did occur to me that I could do as you suggest. I was just hoping to put together a totally wireless Bluetooth solution. Thanks, for the reply!
Great info chap. I've just done the antenna trick!!! 😳 it started out at 5 meters and is about 30 meters now!!! Awesome, thanks. One question, what does the 468 equate to? Many thanks
Overrating board manufacturer. The TPA3116 can sometimes do a bit more than 50x2 @ 24v and 4 ohms, but not 20 watts more. I guess Chinese find underrated specs blasphemous and must correct such dissent by doing things like that.
Awsome the way to you teach!!! thanks! a lot from San Luis Potosí, México!!! (i look it because i bought one. and i need the specs. and you give moore that I was looking.
I just soldered that antenna....soo soo thank you for that tip ! I am so happy and greatfull for your instruction !!!! it works awesome ! 1.5 inch antenna !!
Maybe I missed this in the comments or in the video, but is there a standalone power module that you would recommend with this thing? I'm still wondering how you would get 200 W with only 3 amps at 19v?
Where did you get 200 watts? It is rated 100, and not at 19 volts. Here is the specs on the chip. Supports Multiple Output Configurations 2 × 50 W Into a 4-Ω BTL Load at 21 V (TPA3116D2) 2 × 30 W Into a 8-Ω BTL Load at 24 V (TPA3118D2) 2 × 15 W Into a 8-Ω BTL Load at 15 V (TPA3130D2) Wide Voltage Range: 4.5 V to 26 V So at 26 volts, into 4 ohms it can do 50+ WPC. The supplier claims 120 total or 60 per channel.
Well the must have sent u there best because i purchased one and tried it on 23.4 v and it blew the left channel and and my speaker and i Cant raise the volume
this board is great!! powering it with a 4s lipo and it has bunch of power at 8 ohms. starts to distort easily at 15 volts, i will add a voltage booster and set it to 25v
I have a few projects in mind from 1.5” speakers to 3” speakers but I’d like to find a Bluetooth board that I can use for various projects to eliminate research. Something they can push 3” speakers and ALSO be able to operate at low voltage for pushing 1.5” speakers because of the type of installation.
From what I've read, the sweet spot for the TPA3116 is right around 19 volts. If you provide some 4700 uF caps in the supply, you may also get better sound. I hope you make a video when you hook it up to your main speakers. It would also be interesting to see how much difference there is between Bluetooth and line-in.
BlankBrain same amplifier I'm connect 12volt 3a supply and load 15watt each channel but sound not working in speaker it's any falt other wise
Can improve my voltage and amperes ?
After trying three TPA3116D2 based amplifiers I ran into the same conclusions as "BlankBrain's" I operated the amps off 19 Volt 4.7A Dell laptop PSU's with 4700uf filter caps, Alternatively used wired and BT input sources. Sound great. FYI! on public domain sites there are 3D printing plans for cases that fit some of those Bluetooth TPA3116 amps. I tested with Definitive Technology surplus bass drivers and had to apologize to the neighbors. They claimed their dogs filed for relocation.
@@avrahamchamish521 I concur as well. If you want a really well made laptop supply then the best I have come across are the Toshiba ones. Beautifully made and properly screened. I have a few Dell supplies here but haven't tried them - not least because they are attached to laptops and might be missed. Also they don't have the standard barrel connector. But they should be decently made too, but the Toshiba ones are exquisite. I was really surprised how much went into them.
After watching this video a second time i ordered the TPA3116D2 form Bang good. It also comes with an acrylic case
Thanks for the review!
The one thing that I don't readily find on these boards ( Amazon and so on ) is if they have that annoying "Blue Tooth Audio" voice.
Maybe I missed it, but is there an on-off switch?
Does it pop when you turn it on or off?
And how do you think the Bluetooth performance will be once it's maybe mounted inside of an enclosure?
yes good amp but how do you get it from popping and crackling
THANK'S A LOT FOR SUCH A GREAT VIDEO! i appreciate the knowledge of a senior electronics expert as you. greetings from colombia.
I've built two ammo-box bluetooth speakers using coaxial speakers made for cars, works really well. I'm powering them by a 7,2Ah AGM battery and mounted a charger inside the box with a "cicle of eight" connector for 110/200V on the outside. Also mounted a small LDC panel showing remaining battery. Since the steel box acts a bit like a Faraday cage, I had to solder a tine coaxial cable to where the base of the surface mounted antenna on the board were, scrape off the rail, thus deactivating the original antenna. The cable I soldered I then connected to a Wifi connector that I mounted on the box and then a Wifi antenna on the outside (Both bluetooth and Wifi uses 2,4Ghz so it's perfect). Works quite well and has both good range and power, even though I could only mount one battery in the box because of limited space, two batteries giving 24V would be better.
thanks for sharing. antenna trick and line-in still of great value. had this thing for a year and only using it now. this amp is loud for its size!
May i ask what speakers you are powering? :D
I really love the way you explain everything... Thank you
Hello! Could you tell me where I can find the music you used for testing here? It sounds great! Thx in advance!
Great info. Thanks for talking about this being a balanced output. I wasn't aware that I couldn't use a common ground. I bought a new speaker that likely has switches and such. I didn't know they bridged negative wires together which would cause amplifier failure. Thanks.
Excellent analysis, made my day
I am building a 5.1 system and isolating woofer completely paired with it's own amp, this helped me decide on what configuration to use as I am using 12V to make it portable as well with a Li-po battery pack. So in theory I should still be getting ~50/~50 L/R with ~50W 2.1 channel or 2x(50W+50W) + 2x(~50W) making part of the system portable while keeping overall performance good enough.
Hi Dave,
If those test points were not available, could you have simply connected your scope to the speaker connectors? Could you show how you would use your scope to test a typical home stereo? Where you make connection points etc? Thanks for sharing and thumbs up.
I got this board for my car, but do you know how to make the starting volume of the board itself not completely maxed out?? Every time I turn the key on the beeping sound is deafeningly loud!
I bought one per your recommendation! I mounted it on back of some Bose bookshelf speakers I was not using that I got off ebay! Got it paired with my chrome book it sounds and works great very pleased. Thanks!!
It has any analog input ??
Thanks for the video. Been looking for an amp for the set of speakers I'm building and I'm going to order one of these. Great video!!!
Hi Dave, I bought an amplifier like this after watching your video, it's great, my question is does the ON/OFF switch stay in the ON positon when the power sauce is disconnected? or does it automatically reverse back to off, the reason i'm asking is because I would like to install a toggle switch on the outside of the cabinet to turn the amp on and off, my thoughts were to cut the cable after the transformer and connect to a toggle switch, any help appreciated. Trev
Do you know if there is a way to disable the very loud start up sound?
At 18:00 the signal seems to be cropped, looks like instead of peaks there are flat lines. Does that mean that the amplifier is flattening the peaking or the mp3 chopes the waveform?
Hi there, could you tell me if you have fixed the high bluetooth start up sound somehow? Could I change a resistor? Which one?
Do you think you could use this board in an old car stereo body? Turning a classic car radio body into an in car Bluetooth speaker?
Really excellent video! For the audio waveform demo at 28:40 you point out 24 volts on scope. Were your leads across the speaker out terminals, and measuring entire balanced output voltage, or was one lead referenced to ground? This is a balanced output amp, I think, so it would make a difference in this amp. Have you done a measurement with sine waves? Have you tried the Bluetooth out points for audio in? I work on tubes only so far but really intrigued by this digital method, now that your scope showed me what is really happening in that tiny amp.
Thanks for the update, I just purchased one off Amazon. My wife wants an expensive surround sound to play movies off her phone. I have about 5 older speakers from an old surround sound system. Badda'Bing'Badda' Boom. I hope I can get this going for 19.99. Lol
Your 1/4 wavelength at 2.4Ghz used commonly is 31.25mm which is 1.23", not 1.5" And considering BT is 2.45Ghz, that length is closer to 1.20". Trim your wire a bit and you may increase your range slightly. Best to cut that PCB squiggle and attach there a short run of coax center and ground that should be available and run that to an antenna that is a minimum of 1/4 wavelength away from the dome-peak of the electronics to reduce the floor interference. Thanks for the video, by the way.
I bought that exact same board you have, but somehow i am getting no aux line out like you are? Is it programmed in some way to be able to do that?
Hello! Are your speakers powered by or powered by the amplifier board? What is the volts and amper of your source? My Bluetooth syncs but no sound comes out.
Nice video like always Dave! What do a search after to find that orchestra soundtrack that is a masterpiece?
Loved the review but what watch are you wearing i love it!
I just love these credit card sized BT Amps. If you ask me, this video could have easily doubled in time and I'd be happy, but still a great video. I have one that uses the tracks from the PCB and they set the BT module on the PCB and used the tracks on the board as a antenna, they did use liquid tin not solder and that allows me to go all over the house and outside and I have real aluminum siding.
@12voltvids How is it able to put out 120 watts per channel 2 channels driven so 240 watts from 24v @ 3.2 amp? I'm stuck on stupid here, I purchased 24v at 4 to 6 amps, but 240w divided by 24v = 10a if it was 100% efficient and it says 3 amps needed?
Do you know if it is possible to add line in to use instead of bluetooth?
Can you please clarify if the pin out header (LGR pins) on the board are outputting the same audio as the Bluetooth? Does that mean I can connect that aux output to another amp to achieve a 2.1 setup or 4 channel setup? Is the output line level? Thanks in advance!! 😊
Hello, can you please advice me with buying a similar amp, please? I need something for a ~50W, 3 way, old Sony, 6ohm speaker.
I want to make it wireless, portable.
What do you recommend ? This module or maybe ,meanwhile, you tested something else, better than this?
Thank you so much !
Chris
What is the best way to wire multiple speakers per channel ? with this board?
Question, can you add a lithium battery to this chip and how or where on the board can it be done.
for the 2x ch 3116d2 can i use a 19.5v 12amp power supply to get 234w divided by 4ohm load to get about 58w out of each channel?
hi,
at 14:00 its not an input but its output as for head set or you can add another amplifier to the board, i have tried that and i foud it output, i have something to ask about, am trying to connect TPA3116D2 the normal board with Bluetooth decoder so i can use multi inputs like USB, AUX, SD CARD, Bluetooth but the main problem is the Ground loop noise, do you have aidea so i can avoid that nise?
thanks,
Is it 2tpa3116d2 with 1 tpa3116d2 per channel or it got only 1 tpa3116d2 onboard .? If it got to it can output around 100watts per channel more or less at 2 omh load..
Does it go into a low power standby mode if no bt is connected
Hi! I wanna ask the preset volume once you turn on the amp? Because some bluetooth amp sounds so loud once you powered on then you can only adjust the volume once connected.I want to consider buying this one if sure its not automatically in a full volume once turn on😅
what about using a Slim_Jim antenna for 2304mhz or 5ghz and I am thinking about replacing the WIFI antennas in the back and front of my ACER Aspire TC-220 with Slim_Jim antennas for 2304mhz and 5ghz.
Textbook review! It's all there: general info, technical details, improvements and mods, running it under various conditions... excellent work! Thanks!
ps: the Banggood link you provided ... do you get Banggood points when someone purchases this module? Coz I plan to buy one and it would be great if you could benefit from that too.
That is the link they gave me, but I don't know if I get points for a sale from that link or not.
Done! Purchased it right now via that link. Let's hope Banggood throws some points your way. Have a nice one!
klcbsoft banggood gives points to all who buy
Could you please post a link to that song by Jack Waldenmaier/Music bakery, can't seem to find it.
Never mind, found it on Spotify. It's called "2001 Rhapsody".
We can use this board to replace harman kardon go plus play mini board? Does this ok for harman's tiny 3.5 inches speakers?
neophyte question: if I add if I add this amplifier in the car and connect the speakers from the car already connected to the car radio, what can happen ??? excuse the honor
Hi , great review...i have the board also and you mention that the out put where you solder the ground on, also an input can be.....did you try that out?...i like to hook this up to my broken active loudspeakers but i want no latency, for music playing purpose ..thanks in advance Jody
Tell me the price of this board.. & how much watt of speakers is being played by you?
please could someone tell me the formula to work out the length of the wire , i cant figure out how he did it.
Hi
I need 100w RMS for my car subwoofer.
Wiche board you recommend
Can those buttons for skip/volume up, play/pause functions be reprogrammed using Arduino or Raspberry pi?
whats the real wattage per impedance, what is the max voltage swing
Hi , You mean Audio Ode? like Alternative Audio output? Hope to answer this question because i have this board also and i want to add more mini amplifier to this board
Hi, i really like your'e video and I learn a lot, but i have a little question, it is possible conect a signal to the board without the bluetooth reciever?, this is because I keep in mind build a guitar amplifier 200 Watts, and i need connect a guitar signal to amplify. Hope You can help me.
I'm connect 12v3a dc power supply and load each channel 15watt. Amplifier start and pair bluetooth ok but sound not coming why?
It's low power problem?
That antenna was ingenious 😀
Nice mod and fun little board for DIY enthusiasts. Thanks for the range information for the wire length. Can that Osciloscope measure THD, WATTS AND DECIBELS?
Most of the time you would use special audio analyzer, say Audio Precision which is specifically designed for these kind of signal analisys. You can calculate power from the Vp-p measured by the scope. For distortions, frequency response (limited by sampling) it would be possible to use something like REW, ARTA loudspeaker measuring software and voltage divider. But some amps use floating outputs, like this one, and most A/B class common ground so you have to play around and be careful not to fry something by wrong hook up.
Any of these eBay bluetooth boards compatible with amazon echo dot?
Is there a way to reset these boards. Mine rarely connects via Bluetooth or aux
V3.1 of the board has the ground foil removed on the back side of the antenna. I'm not sure it makes any difference.
Can a stereo input cable be connected by soldering it?
I've read through the comments and didn't see an answer fora question I have, which is probably simply due to my ignorance. My question is can I use this to power some speakers on my ATV? From the comments it seems as though these boards require some means of regulating amperage.. Can I not simply run power to this board straight from my atv 12v battery which is fused at 10A but ofcourse I can put and online fuse in place but that wouldn't really "regulate". If I can't use this board what do you recommend? It will be mounted in a waterproof p BOSS brand 6" Tube ATV speaker. I took apart the Boss tube and it surprised me that it came with a board style amp as I expected it to be in an enclosed style. Once again that's my ignorance with this type of information. Any advice or recommendations would be greatly appreciated.
Does the antenna have to be coaxial cable?
I'm making a set of two speakers and building in one of BangGood houses Sanwu Bluetooth and amp boards. The one I chose has remote control over infrared.
Help ?
can you please fix the bluetooth that often turns itself off? even though I already use 24v 5a it's still like that
Great video. Is there away to reduce the start up sound. Mine seems to go at full volume which is way to loud.
Same here, need a fix for this.
Please let me know where I can download the track that you played in the video.Thank You.
musicbakery.com
czcams.com/video/eLT1FSL3Wz4/video.html
Hi Kirk Nelson or anyone. Your expertise would be greatly appreciated.
I built a portable bluetooth speaker box using the TPA3116D2 2.1 Amp.. Besides listening to music .
I want to use it as a speakerphone for telephone Conference calling, I want to make telephone calls with this bluetooth speaker box..
What extra items do i need???
Sir, what about noise? i brought from amazon after your review but getting little harsh... noise when pause playing
Thanks for the great video. I believe that you mentioned that the card has an input so would it then be possible to attach a 3.5m adapter to it in case I would prefer that? Any idea as to how much sound degradation for this BT vs. 3.5 m cable to your phone? Is the 30Watt @ 8ohm 24volt or 50Watt @ 4ohm 24volt accurate?
Bluetooth has compression, analog does not, but it all depends on how good the DAC is. Bluetooth can potentially be just as good if the integrated dac isn't great.
I'm searching for the comment for analog input can I connect analog input ?? Or solder the wire or something? ?
I have the same kit. But sound quality is not good. Can you suggest how to fix this?
Is this use 12-24 volts and 500 mah
I just got one of these it works great but there is a lot of hiss how can I fix this?
It is possible to add tone control for this power?
On low volume I get a bad his from it that starts to create distortion would there be any solution for it
i want to use this amp for my arcade cab what psu do i need
is there away to add equalizer to this thing
What song is that in the middle??? It's so good!
it's use full video. i am looking to buy it. i want to know if we can connected the antina which buy in shops? can be batter the just sold wire? thanks for sharing...
HI! @12voltvids! really enjoyed your video to the point i bought one amplifier board for myself. Now I have a question - is it possible to conect a volume control potentiometer switch?
Greetings from Brasil! Can you please tell me if you notice any "hiss"? Many of those bluetooth amplifiers have that problem, and I bought one that is similar to your amp.
Thanks for actually using a spectrum analyzer to do the review. There really isn't enough empirical data in reviews on here.
The best review ever seen on CZcams of a $15USD device. How do you get 240 watts out of 3 amp?
Exactly! I just asked the same question? I'm new to electronics but 12 volts 3 amps = 36 Watts tops!
I can't believe the difference that 1 1/2" wire made. I figured it would get slightly better but not as good as it did. Your neighbor was looking at you like, "what the heck is Dave doing now?"
Lot of information on the board however just need your suggestion please..
I have a pair of 30W 4ohms woofer and a pair of 260W 8ohms tweeter.. Im thinking to setup a tweeter - speaker per channel with them so could use them as right and left channels.. Its setup in a single housing.. Like to know if this board be suitable for this speaker setup.. if not then like you to recommend the best amp board with bluetooth please..
how to get an audio input?
Hi there. Any chance you could answer a question for me? When you connect that audio in, in the middle of the board, does it override the Bluetooth? I'm wondering how that would function if I used it in a home speaker project :-)
Chris Bouncy Parker
That audio test point I scoped in the middle of the board will not function as an input as the Bluetooth receiver mutes the amplifier when there is no active audio so that you don't hear any pops and clicks when not streaming sound. The mute input shuts the chip down completely. So you would have to disable the mute input to the amp chip in order to use this as an input.
Got you. That's a shame about the audio input. I don't suppose you would be able to point me in the direction of a board with similar spec, which also has a line in?
Also, how long in mm was your Bluetooth aerial? I've tried to work out the equation, but can't make it make sense! Many thanks in advance!
12voltvids so basically it’s a headphone out put Jack?
I bought the one without the bluetooth, then you can use any input, you are not limited to BT only.
If you jump ground with the upper left pin (TX I think) you can override the Bluetooth signal. You can always add a switch to ground it anytime you'd like.
Great review!
Quick question: Can you connect your smart phone to more than one of these amplifiers at the same time?
The reason I ask is because I would like to convert a pair of Bose 301 speakers to Bluetooth and install these amplifiers inside the cabinets, along with a lipo battery pack and charging circuitry, switches, etc. And, I would want true stereo - which would require two of these boards.
Thanks!
No they only connect to 1 board at a time. This is a stereo board, so you could put it in a speaker box and wire to the speaker internal, and the other channel to the speaker terminals. Then just connect a single wire run from one speaker to the other. That will be a future project for another bluetooth board I have. When I get another pair of speakers.
I thought that might be the case. So, it did occur to me that I could do as you suggest. I was just hoping to put together a totally wireless Bluetooth solution. Thanks, for the reply!
Great info chap. I've just done the antenna trick!!! 😳 it started out at 5 meters and is about 30 meters now!!! Awesome, thanks.
One question, what does the 468 equate to?
Many thanks
Where did you solder the antenna at?
@@raulsd.i.y.videos5585 on the board antenna.
Do you have equipment to determine the distortion of the output when it's not clipping?
No I don't have a distortion analizer, so I have to rely on published data.
Nice video sir, How is the bass response.
The TPA3116 is a 100 watt chip and this has 2 so 200w, where does it get the extra 20w per channel extra, a total of 40 watts for 240watt?
Overrating board manufacturer. The TPA3116 can sometimes do a bit more than 50x2 @ 24v and 4 ohms, but not 20 watts more. I guess Chinese find underrated specs blasphemous and must correct such dissent by doing things like that.
Awsome the way to you teach!!! thanks! a lot from San Luis Potosí, México!!! (i look it because i bought one. and i need the specs. and you give moore that I was looking.
I just soldered that antenna....soo soo thank you for that tip ! I am so happy and greatfull for your instruction !!!! it works awesome ! 1.5 inch antenna !!
3 inch antenna works slightly better, but not worth the extra amount of dangling wire.
Maybe I missed this in the comments or in the video, but is there a standalone power module that you would recommend with this thing? I'm still wondering how you would get 200 W with only 3 amps at 19v?
Where did you get 200 watts? It is rated 100, and not at 19 volts.
Here is the specs on the chip.
Supports Multiple Output Configurations
2 × 50 W Into a 4-Ω BTL Load at 21 V (TPA3116D2)
2 × 30 W Into a 8-Ω BTL Load at 24 V (TPA3118D2)
2 × 15 W Into a 8-Ω BTL Load at 15 V (TPA3130D2)
Wide Voltage Range: 4.5 V to 26 V
So at 26 volts, into 4 ohms it can do 50+ WPC. The supplier claims 120 total or 60 per channel.
Well the must have sent u there best because i purchased one and tried it on 23.4 v and it blew the left channel and and my speaker and i Cant raise the volume
this board is great!! powering it with a 4s lipo and it has bunch of power at 8 ohms. starts to distort easily at 15 volts, i will add a voltage booster and set it to 25v
cool. what's about the noises?
it's an aux output, so how can i hook it to other Amplifier
What’s the minimal power requirement to power two 1.5” speakers at 10-20watts each? I’m trying to build a portable lipo powered unit.
I have a few projects in mind from 1.5” speakers to 3” speakers but I’d like to find a Bluetooth board that I can use for various projects to eliminate research. Something they can push 3” speakers and ALSO be able to operate at low voltage for pushing 1.5” speakers because of the type of installation.
I cant see only your videos on youtube.It says: " Your browser doesnt support any video format now" .
At 24V, how many amps do you need to work correctly?
At least 3 amps, I have one of these really are great!