Hi, I have two options firt one is the amplifier in the video and other one is irs2092. Which one sould i use with 400W rms subwoofer? Please recommend.
Great video, Very informative! I have a couple of these boards, Identical to the one you've reviewed (XH-M253 board) I have a couple of questions, Much appreciated if you can find the time to answer them! (Maybe it can help other DIYers too) Firstly, The manufacturer specified voltage for the TDA8954 is ±42.5 Vac. But due to board design with cheap capacitors, the recommended board voltage is only 0-24vac. Apart from replacing the capacitor bank with suitably high voltage rated caps, Is there anything else we need to replace on the board to run at the full voltage range? (Are there any other components which cannot handle the higher voltage range?) Secondly, If the caps on top of the board are going to be replaced anyways for higher voltage rating, Wouldnt it make sense to re-mount the inductors and other tall components under the board, allowing for a much larger heatsink/fan combination on top? I have a couple of surplus 250W xeon grade CPU coolers, Which may allow fully passive operation!
I don't recommend full voltage operation when the power source is a transformer. The maximum voltage allowed for the chip is +/- 41V DC. In terms of AC voltage it will be below 27VAC. Every component in the circuit is capable of operating at +/-41VDC. So changing components won't help. But placing through hole components on the other side will definitely help, and it is a good suggestion, I will try it out soon. A bigger heatsink is necessary.
@@EngineeringEssentials Thanks for the reply! Your video and reply surely helped me with this project! I got my boards back, will try remounting the components on the back. I did try mounting a (much) larger heatsink (ad-hoc, nothing properly mounted) and the thermal performance was incredible. I think fully passive operation is definitely possible with the xeon heatsinks I mentioned earlier, will try to post a video of the end result. Thanks again :)
Hello sir, this ic use in Mackie thump 15a speaker and its work great so can we make an amplifier board ? Please make a video 300w amplifier board circuit please
Thanks for this video, this was really helpful as I was exploring the details of this board .. went thru the comment section and let me tell you , u are gem of a person.. you have answered to all the queries raised here.. need your help please. I am building a subwoofer with Polk 1240DVC , 8 ohms speaker. I tried this board and facing couple of issues..there is very mild humming and too much of heating, your guidance pls. The transformer is 24 0 24, 7 amps.. will additional capacitors help? And how to deal with the heating issue..
If you are using the exact same board shown in this video, then you can trouble shoot in the following ways. 1. Remove signal input to the amplifier and connect amplifier signal input to signal ground. Turn amplifier ON, if you hear the same humming noise then follow the rest. otherwise your amplifier is good, you need to find a good signal source that's it. 2. Check speaker wiring, check capacitor (capacitor value, leaking), check DC voltage (value, polarity) if everything is nominal continue to next step. 3. check transformer for leakage from primary to secondary. connect a multi meter from transformer "secondary" to "earth" pin of house wiring, put multi meter in ac voltage mode(200V) you should not see a voltage greater than 40V otherwise you should consider earthing 0V point of secondary to earth through ground loop isolation circuit. 4. IF nothing above helps you need to reheat all solder connections to eliminate chances of dry solder. 5. If everything fails you need to trace the circuit and check each and every component. 99% of problems will be solved in step 1 itself. Thank you!
It depends on your taste and intended application. i will suggest a class A amplifier for stereo speakers up to a maximum of 15Wrms, Class AB for speakaers up to 250Wrms. For subwoofers class D amplifiers perform just fine. you could use a class AB too. Regarding amplifier/subwoofer power, select a Subwoofer first that meets your requirements, then select an amplifier with 20% more rms output than your subwoofer. Care must be taken to match impedance of your subwoofer to amplifier rated impedance. thank you!
This IC is not suitable for your application, since it does not support a 2Ohm load both in bridged as well as single-ended mode. I suggest you check IRS2092 based class D amplifiers for your specific application.
Partially you are correct, but partially you are incorrect. Let me explain, suppose you are building a half bridge amplifier(Class AB/D/A) you need 100W@4ohm then DC rail voltage on full load should be +/-32V(pure DC without any ripple), peak current drawn will be 7.1A, say 8A. SMPS required for the job will be dual 32V 8A-512W SMPS. Lets consider Transformer, A 30-0-30 transformer will give 34-0-34 steady voltage with 10000uF capacitors, on load. Transformers can be overloaded for short amount of time and short term peak current draw is handled by capacitors. These two factors let us select a transformer with less current rating (probably 4A considering dynamic behaviour of music) than required(8A). That meansTransformer required: 30-0-30 4A 240VA. For same power output Transformer VA required is less than half of that SMPS. SMPS can cause interference with pre-amplifier, tone control etc, proper shielding and earthing is important. (this is why LLC converters are recommended for audio amplifiers.) Life span of SMPS is considerably less than that of Transformer. Transformers are easy to make and setup. For Class AB, Class A amplifiers might conduct high frequency switching noise generated by SMPS to speakers, hindering sound quality.(for class D amplifiers this effect is filtered by the low pass filter at output.) Still i recommend using a SMPS for classD amplifiers. Why? two reasons. class D amplifiers are sensitive to power supply voltage fluctuations. if the rail voltage collapse during a bass punch, subwoofer won't work effectively. second reason, most class D amplifiers have a voltage limit, say TPA3116D2 voltage limited to 26V. SMPS could keep this voltage on its rails regardless of current being drawn. but a transformer voltage may fall to 18V during load. This wll severly affect amplifier power output. Lastly if your amplifier is bridged(most class D amplifiers are), SMPS and transformer cost will be nearly the same. hope it helps! thank you!
In short, cost, complexity is the main factors that keeps SMPS away from audio amplifiers. docs.google.com/spreadsheets/d/1IOaF_6FsJ91kjv8ZOLRACUUrnHfZyC-TzvhV-2jpA1E/edit#gid=767436851
I bought an audio decoder module (BT+MP3+FM) from thakaraparambu for rs 150/- but turned out to be of poor quality. It works, but you also get a whining sound from the speakers, tried everything to suppress it, but no success. Could you suggest a good decoder board/module.
Have you tried a different power supply just for the board(do not share the same power supply with any amplifier boards)? For me that worked. There are different bluetooth modules available, but everything looks the same. If you want to be on safe side, buy a board with square shaped IC, which have pins all around it. Don't buy the rectangular shaped ic, with pins on two sides.
@@EngineeringEssentials 👍, with a seperate power supply we can manage. Nowadays some modules(pagaria )are available with good disign, but coastly (300+)
12.5V dual DC is the minimum recommended voltage as per datasheet. using 12Vdc dual you might get 15W out of an amplifier into 8Ohm Load. 1A current limit will be the limiting factor here.
If you're willing to use a transformer, please use toroidal transfomer with a maximum of 28.0.28V (no load voltage) or 25.0.25V full load voltage with 6A capacity. Hope it helps.
@@djshomail6575 capacitors from reputed manufacturer like Rubycon, Nichicon, Sanyo etc. And the capacitor indended to use with switching power supplies is best for class d amplifier such as Rubycon PK, PX, YXJ, YXS, RXF series capacitors. 6800uF capacitor should work fine, with 63V rating.
Congrats great video. I have a dual tda8954th amp board connected to a 23-0-23 ac transformer. The heatsink gets quite hot even without the speaker load connect after about 10 to 15 mins. Is this normal?? Your technical opinion would be much appreciated. Thanks.
No, that is not normal( if the heatsink temperature exceeded 50 degree Celsius) There is something wrong. Your amplifier might be oscillating (oscillation may be due to an open feedback connection ). Before you proceed I highly recommend you to check idle current draw from power supply on both rails. If current draw from both power rails are same your amplifier is oscillating. If current draw from both rails are vastly different there is something wrong with your board, a throughout checking required.
Hope you are doing well! I have two passive tower speakers and each tower consists of Woofer 6.5 Inch(60W RMS)+Mid-Range 4.0 Inch(40W RMS)+Tweeter 1.5 Inch(20W RMS) that is 120W RMS+ 120W RMS and Speaker impedance 4-8 Ω. I have also two TDA8954TH mono boards. Can I use my two tower speaker with these amplifier boards as 2.0 with ease or not. If yes could you please advise me on the appropriate volt of the transformer and the ampere?
This particular board drives 4ohm in PBTL mode as well, but chip manufacturer tells us not to. This chip is actually rated to drive only 8 ohm load in PBTL mode. If you have the exact same board you're fine you could use it with 4ohm as well. From my tests it can only output around 30W of clean Power after that output signals gets distorted ( not clipping) . If you use a toroidal Transfomer use 27-0-27V(check dc rails, it should not exceed 40V) 8A for both channels, for EI core Transformer better go with 24-0-24V 10A. Remember this chip needs some serious cooling, a cooling fan is recommended. Thank you 🙏.
@@EngineeringEssentials Power amplifier board using TDA8954TH chip, with Nvidia industrial fan, the voltage part of the original Ruby capacitors. After the pure design to driver more than 10-inch 300W stage speakers! As this is a class A AD class design has both the warmth of class A, there are class D high efficiency, so work with almost no heat! Product parameter: Product Name: Digital Audio Amplifier Board Amplifier chip:TDA8954TH Input voltage: Dual AC24V±4V Input current:> 5A & 300VA Input impedance: 1KΩ Input signal: 1.8V Number of channels: mono Magnification: 33 Output power: 420W Output impedance: 4-8Ω Working Type: AD class So, please advise whether my passive bookshelf speakers[ Woofer 6.5 Inch 4Ω(60W RMS)+Mid-Range 4.0 Inch 8Ω(40W RMS)+Tweeter 1.5 Inch 4Ω(20W RMS)] are compatible with this board or not?
@@zunayedislam4029 if these drivers are connected in parallel please use a 3 way crossover to match impedance of each driver to amplifier so that you can get maximum power out of it. In short it is not compatible with mentioned amplifier board( because impedance is less than 2 ohm), but with a proper crossover Network you can make it compatible (still your amplifier will be under utilised). Hope it helps.
Rs. 3,174.86 | TDA7293 parallel amplifier board, 600W power amplifier board( high power- mono AMP board ) a.aliexpress.com/_mrZHgrV similar parellel boards are available
This scope has voltage limit of +/-30V anything higher than that cannot be measured directly. So you need voltage attenuator, most simple way is to build a resistor network of equal resistances connected in series(1% tolerance resistors recommended). This network when connected across voltage to be measured (amplifier output) will divide the voltage by number of resistors in the network. For example, if you connect 5 resistors of 1kOhm in series and connected across 100v power supply, across each and every 1k resistors you will get 20V, absolutely measurable by this oscilloscope. (Keep in mind that as no of resistors increase error in the measurement can also increase, if you have a accurate voltage source available, first measure known voltage with this set-up, and find out the ratio between voltage applied and voltage indicated on oscilloscope before measuring amplifier output, this way we can reduce the error. Thanks)
Hi Dear, can i use 30-0-30 6amp transformer. Because i have this transformer which im using for lm3886 board. I want to use this board as well together. Please suggest
You can't use this transfomer, since this audio amplifier ic can only handle up to 29VAC dual on no load. If this maximum limit is exceeded the amplifier might not function/get damaged.
In this particular board, you can simply add capacitor parallel to the existing capacitors by following the correct polarity. if you need any more help, feel free to ask. thank you.
The current in the both AC lines without inputs and outputs is 26ma (with a23-0-23 acv), which is well within the maximum quiescent current of 75ma per chip as per the datasheet. Maybe I should mount a cooling fan above the heatsink and add 4 nos, 4700 mfd, 50v filter capacitors externally. I suppose that should improve the sound quality at higher volumes??.
26mA is fine. 26*46=1.1W which very low, don't worry add a decent heatsink as you said. Additional capacitor will help at higher volumes for sure.still I recommend using an SMPS with class D amplifiers whenever possible thank you 🙏.
Tired all options including battery (4 AAA cells) and a different amplifier, but to no avail. The module that I bought has a square SMD chip with pins around it. Maybe I'll try one more of this.
I am assuming you already AC coupled your BT board? from your explanation I strongly doubt there is something else going on. If possible contact me at telegram t.me/engineeringessentials
This amplifier requires at least dual 12.6V to work satisfactoryly. So using 2 numbers of 12V batteries you could make it work. But it is recommended to use regulated dual 24V or higher for best performance.
@@dgjm7129 it can work with DC as well as AC. In case if input is DC bridge rectifier will act as a polarity protection diode that's it. This module can take DC power as well as AC.
@@EngineeringEssentials oh, that's so.. maybe your right. I think maybe this one you have on the video is electrically different, nothing happen on my dual bridge tda8954th amp. When I use +/- 35v directly on the power input.
@@dgjm7129 I demonstrated in the video that DC input to power terminals will work. I put 2SMPS output in serial mode to give +/-36V (DC) the amplifier with rectifier works just fine. Bridge rectifier don't care if it's dc or ac at the input it always produce DC at output.
TDA8954th is rated 420W@8ohm. I got only 100W may be due to the crappy power supply/board layout. IRS2092 is a driver chip so it should be able to deliver decent output into 8ohm load or even 4ohm load. Out of curiosity, I bought a 500W reference design board from Aliexpress after a hectic repair process finally it worked. In a future video, I will test the board for sure. I am hopeful that it will give at least 250W into 4ohm.
@@infohackerinfo1045 TPA32** series chips are seriously powerful class D amplifier IC from TI. If you can afford it's a better IC overall. Only single rail power supply needed. Have a research before you buy. I purchased 2.1 configuration of TPA3255 2yrs ago, it performs well 250W RMS output is easy for this particular chip.
I'm using a 24v 15a power supply. I should be getting over 300 watts which my subwoofer is rated for but with this amplifier I'm getting less than 80w with distortion wired at 4ohms. Can you help?
I guess you're using a dual 24V power supply. The IC is not rated for 4ohms in PBTL mode( this board is PBTL). So you need 8ohm subwoofer to get decent power. The distortion is due to poor board layout. With +/- 36V regulated power supply maximum I obtained is 120W . Using 8 ohm load is the best thing u can do to reduce distortion.
@@maincharacter2677 you could buy TPA 3255 stereo Board with 48V 15A (24V dual is 48V rail to rail) this can produce 250Wrms easily into 4 Ohm load later you can add another Subwoofer too. Go for the stereo board instead of 2.1 board for better quality.
Yes you can, but this amplifier board cannot take any signal voltage higher than 2V RMS. So be sure to check whether input to this amplifier is within this limit. My question is why you're planning to bring another amplifier output (Speaker out I guess) to this amplifier?
@@josephalan4152 you cannot cascade amplifiers to get power from each amplifier added up to output. A power amplifier can only take a voltage signal and amplifies to give power at output, that means high current + Voltage at output. If you want a high power amplifier either you can parellel them (like TDA 7293) or go and buy a more powerful amplifier (TPA 3255). This amplifier TDA8954Th is already bridged and do not support paralleling with any other amplifier. The only choice left is to replace amplifier.
Here's the link www.google.com/url?sa=t&source=web&rct=j&url=www.nxp.com/docs/en/data-sheet/TDA8954.pdf&ved=2ahUKEwjXn87qv5X2AhUySmwGHWQXCBkQFnoECDkQAQ&usg=AOvVaw2WKafQ5-gxHr9RoKPS9W-w
I got it for 14USD from AliExpress different ones are getting up to 200W into 4 ohms. So it's sure chip is capable but the board sucks. Thank you for watching 🙏
@@EngineeringEssentials The company is called sure electronics :) They work together with wondom. They are basically high quality versions of those boards. Yea like i guessed.. That the boards are not so great. From the cheap ones this is the one i was looking forward to buy (not from this seller but the same board). What do you think? www.ebay.de/i/133477025520?chn=ps&norover=1&mkevt=1&mkrid=707-134425-41852-0&mkcid=2&itemid=133477025520&targetid=857896282222&device=m&mktype=pla&googleloc=9043815&poi=&campaignid=10215345574&mkgroupid=105782607727&rlsatarget=pla-857896282222&abcId=1139676&merchantid=113492620&gclid=CjwKCAjwrKr8BRB_EiwA7eFaphOmss8QniOdxe-9i8h1dTsbbJA7p4cLB9JQrHty-bv9-ZvBPJBCvBoC544QAvD_BwE
@@sandeepsinghjagdev3485 they will send the order for sure. But we don't know what will be the reaction from Indian customs department. Even if you order on AliExpress it's better to select a shipping options with tracking inside our country. This way if you didn't receive your product you will get the information, and possibly claim a refund from AliExpress.
Hi, I have two options firt one is the amplifier in the video and other one is irs2092. Which one sould i use with 400W rms subwoofer? Please recommend.
IRS2092 based designs will be my choice simply because it can handle 4ohm loads. These chips in bridge mode could only handle 8ohm loads.
Great video, Very informative! I have a couple of these boards, Identical to the one you've reviewed (XH-M253 board)
I have a couple of questions, Much appreciated if you can find the time to answer them! (Maybe it can help other DIYers too)
Firstly, The manufacturer specified voltage for the TDA8954 is ±42.5 Vac. But due to board design with cheap capacitors, the recommended board voltage is only 0-24vac. Apart from replacing the capacitor bank with suitably high voltage rated caps, Is there anything else we need to replace on the board to run at the full voltage range? (Are there any other components which cannot handle the higher voltage range?)
Secondly, If the caps on top of the board are going to be replaced anyways for higher voltage rating, Wouldnt it make sense to re-mount the inductors and other tall components under the board, allowing for a much larger heatsink/fan combination on top?
I have a couple of surplus 250W xeon grade CPU coolers, Which may allow fully passive operation!
I don't recommend full voltage operation when the power source is a transformer. The maximum voltage allowed for the chip is +/- 41V DC. In terms of AC voltage it will be below 27VAC. Every component in the circuit is capable of operating at +/-41VDC. So changing components won't help. But placing through hole components on the other side will definitely help, and it is a good suggestion, I will try it out soon. A bigger heatsink is necessary.
@@EngineeringEssentials Thanks for the reply! Your video and reply surely helped me with this project!
I got my boards back, will try remounting the components on the back. I did try mounting a (much) larger heatsink (ad-hoc, nothing properly mounted) and the thermal performance was incredible. I think fully passive operation is definitely possible with the xeon heatsinks I mentioned earlier, will try to post a video of the end result. Thanks again :)
Great, thanks 👍
Great, thanks 👍
Hello sir, this ic use in Mackie thump 15a speaker and its work great so can we make an amplifier board ?
Please make a video 300w amplifier board circuit please
There are ready made boards available for 300W power output. May be in future we could build one ourself.
Thanks for this video, this was really helpful as I was exploring the details of this board .. went thru the comment section and let me tell you , u are gem of a person.. you have answered to all the queries raised here.. need your help please. I am building a subwoofer with Polk 1240DVC , 8 ohms speaker. I tried this board and facing couple of issues..there is very mild humming and too much of heating, your guidance pls. The transformer is 24 0 24, 7 amps.. will additional capacitors help? And how to deal with the heating issue..
If you are using the exact same board shown in this video, then you can trouble shoot in the following ways. 1. Remove signal input to the amplifier and connect amplifier signal input to signal ground. Turn amplifier ON, if you hear the same humming noise then follow the rest. otherwise your amplifier is good, you need to find a good signal source that's it. 2. Check speaker wiring, check capacitor (capacitor value, leaking), check DC voltage (value, polarity) if everything is nominal continue to next step. 3. check transformer for leakage from primary to secondary. connect a multi meter from transformer "secondary" to "earth" pin of house wiring, put multi meter in ac voltage mode(200V) you should not see a voltage greater than 40V otherwise you should consider earthing 0V point of secondary to earth through ground loop isolation circuit. 4. IF nothing above helps you need to reheat all solder connections to eliminate chances of dry solder. 5. If everything fails you need to trace the circuit and check each and every component. 99% of problems will be solved in step 1 itself. Thank you!
Thank you! Perfect test. Maximum power?
150W was the maximum I measured before clipping, but some distortion was there when output is more than 20W.
Sir what amp's batter performance?
And what subwoofer rms ... watt???? 4ohm
It depends on your taste and intended application. i will suggest a class A amplifier for stereo speakers up to a maximum of 15Wrms, Class AB for speakaers up to 250Wrms. For subwoofers class D amplifiers perform just fine. you could use a class AB too.
Regarding amplifier/subwoofer power, select a Subwoofer first that meets your requirements, then select an amplifier with 20% more rms output than your subwoofer. Care must be taken to match impedance of your subwoofer to amplifier rated impedance. thank you!
@@EngineeringEssentials Thanks 🙏🙏🙏🙏🙏
I have a same product,... Next I am bay 200rms 400watt subwoofer....
👍 Thank you so much ❤️🔥
@@kinkarroy5012 most welcome 👍
Can i make it as a subwoofer amplifier
Can it support 2 ohms sony subwoofer
Can i use 24-0-24 5 amps trasformer what will be the output rms
This IC is not suitable for your application, since it does not support a 2Ohm load both in bridged as well as single-ended mode. I suggest you check IRS2092 based class D amplifiers for your specific application.
Good review.. But I realised that this type of amplifier requires the correct transformer to avoid distortion
That might be the case I have to retest the IC with a better power supply!
So how much is the total RMS wattage using the required voltage & current?
I managed to get 30W clean power in 4ohm 20W in 8ohm. With +/-36V power supply. Maximum power was 150W into 8ohm.
@@EngineeringEssentials Thank u Sir
You're welcome ☺️
I appreciate your prompt reply. But It was my preconceived notion that SMPS power supplies are not suitable for audio amplifiers??
Partially you are correct, but partially you are incorrect. Let me explain, suppose you are building a half bridge amplifier(Class AB/D/A) you need 100W@4ohm then DC rail voltage on full load should be +/-32V(pure DC without any ripple), peak current drawn will be 7.1A, say 8A. SMPS required for the job will be dual 32V 8A-512W SMPS. Lets consider Transformer, A 30-0-30 transformer will give 34-0-34 steady voltage with 10000uF capacitors, on load. Transformers can be overloaded for short amount of time and short term peak current draw is handled by capacitors. These two factors let us select a transformer with less current rating (probably 4A considering dynamic behaviour of music) than required(8A). That meansTransformer required: 30-0-30 4A 240VA. For same power output Transformer VA required is less than half of that SMPS.
SMPS can cause interference with pre-amplifier, tone control etc, proper shielding and earthing is important. (this is why LLC converters are recommended for audio amplifiers.)
Life span of SMPS is considerably less than that of Transformer.
Transformers are easy to make and setup.
For Class AB, Class A amplifiers might conduct high frequency switching noise generated by SMPS to speakers, hindering sound quality.(for class D amplifiers this effect is filtered by the low pass filter at output.)
Still i recommend using a SMPS for classD amplifiers. Why? two reasons. class D amplifiers are sensitive to power supply voltage fluctuations. if the rail voltage collapse during a bass punch, subwoofer won't work effectively.
second reason, most class D amplifiers have a voltage limit, say TPA3116D2 voltage limited to 26V. SMPS could keep this voltage on its rails regardless of current being drawn. but a transformer voltage may fall to 18V during load. This wll severly affect amplifier power output. Lastly if your amplifier is bridged(most class D amplifiers are), SMPS and transformer cost will be nearly the same.
hope it helps! thank you!
In short, cost, complexity is the main factors that keeps SMPS away from audio amplifiers.
docs.google.com/spreadsheets/d/1IOaF_6FsJ91kjv8ZOLRACUUrnHfZyC-TzvhV-2jpA1E/edit#gid=767436851
Can use this for dainty 4ohm?
Apparently you can use, but it is not recommended. This chip is not capable of handling 4 ohm load in bridge configuration
I bought an audio decoder module (BT+MP3+FM) from thakaraparambu for rs 150/- but turned out to be of poor quality. It works, but you also get a whining sound from the speakers, tried everything to suppress it, but no success. Could you suggest a good decoder board/module.
Have you tried a different power supply just for the board(do not share the same power supply with any amplifier boards)? For me that worked. There are different bluetooth modules available, but everything looks the same. If you want to be on safe side, buy a board with square shaped IC, which have pins all around it. Don't buy the rectangular shaped ic, with pins on two sides.
@@EngineeringEssentials 👍, with a seperate power supply we can manage. Nowadays some modules(pagaria )are available with good disign, but coastly (300+)
Can I use 12 0 12 VDC 1A how many watts give ?
12.5V dual DC is the minimum recommended voltage as per datasheet. using 12Vdc dual you might get 15W out of an amplifier into 8Ohm Load. 1A current limit will be the limiting factor here.
Hello sir I have the a Tda 8954 stereo 210*2 ( watt ) and my bookshelf’s are 200 watt each now suggest me a best transformer please I need ur help
If you're willing to use a transformer, please use toroidal transfomer with a maximum of 28.0.28V (no load voltage) or 25.0.25V full load voltage with 6A capacity. Hope it helps.
@@EngineeringEssentials I have a 24 0 24 toroidal transformer can I use it
Sure that is enough. I recommend to replace the rail capacitor with a good quality once, definitely will see an improvement in sound performance
@@EngineeringEssentials Thanks a lot sir for ur suggestion and help but can tell me which volt /uf capacitor will be best
@@djshomail6575 capacitors from reputed manufacturer like Rubycon, Nichicon, Sanyo etc. And the capacitor indended to use with switching power supplies is best for class d amplifier such as Rubycon PK, PX, YXJ, YXS, RXF series capacitors. 6800uF capacitor should work fine, with 63V rating.
Congrats great video. I have a dual tda8954th amp board connected to a 23-0-23 ac transformer. The heatsink gets quite hot even without the speaker load connect after about 10 to 15 mins. Is this normal?? Your technical opinion would be much appreciated. Thanks.
No, that is not normal( if the heatsink temperature exceeded 50 degree Celsius) There is something wrong. Your amplifier might be oscillating (oscillation may be due to an open feedback connection ). Before you proceed I highly recommend you to check idle current draw from power supply on both rails. If current draw from both power rails are same your amplifier is oscillating. If current draw from both rails are vastly different there is something wrong with your board, a throughout checking required.
Bro which course you stady
I did Electrical and Electronics Engineering, and Mtech in Electrical Machines
Hope you are doing well! I have two passive tower speakers and each tower consists of Woofer 6.5 Inch(60W RMS)+Mid-Range 4.0 Inch(40W RMS)+Tweeter 1.5 Inch(20W RMS) that is 120W RMS+ 120W RMS and Speaker impedance 4-8 Ω. I have also two TDA8954TH mono boards. Can I use my two tower speaker with these amplifier boards as 2.0 with ease or not. If yes could you please advise me on the appropriate volt of the transformer and the ampere?
This particular board drives 4ohm in PBTL mode as well, but chip manufacturer tells us not to. This chip is actually rated to drive only 8 ohm load in PBTL mode. If you have the exact same board you're fine you could use it with 4ohm as well. From my tests it can only output around 30W of clean Power after that output signals gets distorted ( not clipping) . If you use a toroidal Transfomer use 27-0-27V(check dc rails, it should not exceed 40V) 8A for both channels, for EI core Transformer better go with 24-0-24V 10A. Remember this chip needs some serious cooling, a cooling fan is recommended. Thank you 🙏.
@@EngineeringEssentials Thank you very much for your valuable advice!!
@@EngineeringEssentials Power amplifier board using TDA8954TH chip, with Nvidia industrial fan, the voltage part of the original Ruby capacitors.
After the pure design to driver more than 10-inch 300W stage speakers! As this is a class A AD class design has both the warmth of class A, there are class D high efficiency, so work with almost no heat!
Product parameter:
Product Name: Digital Audio Amplifier Board
Amplifier chip:TDA8954TH
Input voltage: Dual AC24V±4V
Input current:> 5A & 300VA
Input impedance: 1KΩ
Input signal: 1.8V
Number of channels: mono
Magnification: 33
Output power: 420W
Output impedance: 4-8Ω
Working Type: AD class
So, please advise whether my passive bookshelf speakers[ Woofer 6.5 Inch 4Ω(60W RMS)+Mid-Range 4.0 Inch 8Ω(40W RMS)+Tweeter 1.5 Inch 4Ω(20W RMS)] are compatible with this board or not?
@@zunayedislam4029 if these drivers are connected in parallel please use a 3 way crossover to match impedance of each driver to amplifier so that you can get maximum power out of it.
In short it is not compatible with mentioned amplifier board( because impedance is less than 2 ohm), but with a proper crossover Network you can make it compatible (still your amplifier will be under utilised). Hope it helps.
@@EngineeringEssentials Then could you please advise me on which amplifier board I should buy?
Which amp should i use with it
Rs. 3,174.86 | TDA7293 parallel amplifier board, 600W power amplifier board( high power- mono AMP board )
a.aliexpress.com/_mrZHgrV similar parellel boards are available
is it possible to parallel 2 boards for 2 ohm load?
No, this one is already bridged, parellel operation is not supported.
bro i have the same scope how to messure large amps? can u explain?
This scope has voltage limit of +/-30V anything higher than that cannot be measured directly. So you need voltage attenuator, most simple way is to build a resistor network of equal resistances connected in series(1% tolerance resistors recommended). This network when connected across voltage to be measured (amplifier output) will divide the voltage by number of resistors in the network. For example, if you connect 5 resistors of 1kOhm in series and connected across 100v power supply, across each and every 1k resistors you will get 20V, absolutely measurable by this oscilloscope. (Keep in mind that as no of resistors increase error in the measurement can also increase, if you have a accurate voltage source available, first measure known voltage with this set-up, and find out the ratio between voltage applied and voltage indicated on oscilloscope before measuring amplifier output, this way we can reduce the error. Thanks)
Hi Dear, can i use 30-0-30 6amp transformer. Because i have this transformer which im using for lm3886 board. I want to use this board as well together. Please suggest
You can't use this transfomer, since this audio amplifier ic can only handle up to 29VAC dual on no load. If this maximum limit is exceeded the amplifier might not function/get damaged.
Sir can you show how to add capacitor
In this particular board, you can simply add capacitor parallel to the existing capacitors by following the correct polarity. if you need any more help, feel free to ask. thank you.
Can i use it as subwoofer amplifier
You can, but your Subwoofer should be of 8ohm impedance
Why 8ohm?
Because this board is designed to only work with 8Ohm load
My sub is 6Ohm....is it ok for this ic?
The current in the both AC lines without inputs and outputs is 26ma (with a23-0-23 acv), which is well within the maximum quiescent current of 75ma per chip as per the datasheet. Maybe I should mount a cooling fan above the heatsink and add 4 nos, 4700 mfd, 50v filter capacitors externally. I suppose that should improve the sound quality at higher volumes??.
26mA is fine. 26*46=1.1W which very low, don't worry add a decent heatsink as you said. Additional capacitor will help at higher volumes for sure.still I recommend using an SMPS with class D amplifiers whenever possible thank you 🙏.
Tired all options including battery (4 AAA cells) and a different amplifier, but to no avail. The module that I bought has a square SMD chip with pins around it. Maybe I'll try one more of this.
I am assuming you already AC coupled your BT board? from your explanation I strongly doubt there is something else going on. If possible contact me at telegram t.me/engineeringessentials
Can I use battery in it sir?
This amplifier requires at least dual 12.6V to work satisfactoryly. So using 2 numbers of 12V batteries you could make it work. But it is recommended to use regulated dual 24V or higher for best performance.
u need AC on it so u need a transformer for it... its possible if u use an inverter. or bypass the rectifier to get +/- voltages
@@dgjm7129 it can work with DC as well as AC. In case if input is DC bridge rectifier will act as a polarity protection diode that's it. This module can take DC power as well as AC.
@@EngineeringEssentials oh, that's so.. maybe your right. I think maybe this one you have on the video is electrically different, nothing happen on my dual bridge tda8954th amp. When I use +/- 35v directly on the power input.
@@dgjm7129 I demonstrated in the video that DC input to power terminals will work. I put 2SMPS output in serial mode to give +/-36V (DC) the amplifier with rectifier works just fine. Bridge rectifier don't care if it's dc or ac at the input it always produce DC at output.
Only 100w in 8ohm?.. what about the irs 2092? **500w** mono **280rms 8ohm***
TDA8954th is rated 420W@8ohm. I got only 100W may be due to the crappy power supply/board layout. IRS2092 is a driver chip so it should be able to deliver decent output into 8ohm load or even 4ohm load. Out of curiosity, I bought a 500W reference design board from Aliexpress after a hectic repair process finally it worked. In a future video, I will test the board for sure. I am hopeful that it will give at least 250W into 4ohm.
@@EngineeringEssentials i need 250w rms 8ohm what amp do it?
@@infohackerinfo1045 TPA32** series chips are seriously powerful class D amplifier IC from TI. If you can afford it's a better IC overall. Only single rail power supply needed. Have a research before you buy. I purchased 2.1 configuration of TPA3255 2yrs ago, it performs well 250W RMS output is easy for this particular chip.
I'm using a 24v 15a power supply. I should be getting over 300 watts which my subwoofer is rated for but with this amplifier I'm getting less than 80w with distortion wired at 4ohms. Can you help?
Here's a link to the way I've wired this if that helps! ruclips.net/video/6f_-R77DsRM/видео.html
I guess you're using a dual 24V power supply. The IC is not rated for 4ohms in PBTL mode( this board is PBTL). So you need 8ohm subwoofer to get decent power. The distortion is due to poor board layout. With +/- 36V regulated power supply maximum I obtained is 120W . Using 8 ohm load is the best thing u can do to reduce distortion.
Engineering Essentials. Alright thank you very much I appreciate it.
Engineering Essentials. Are there any better boards with more power suited for my psu?
@@maincharacter2677 you could buy TPA 3255 stereo Board with 48V 15A (24V dual is 48V rail to rail) this can produce 250Wrms easily into 4 Ohm load later you can add another Subwoofer too. Go for the stereo board instead of 2.1 board for better quality.
Can I connect another amplifier speaker output into this board input?
Yes you can, but this amplifier board cannot take any signal voltage higher than 2V RMS. So be sure to check whether input to this amplifier is within this limit.
My question is why you're planning to bring another amplifier output (Speaker out I guess) to this amplifier?
@@EngineeringEssentials because I wanted to hear in more wattage
@@josephalan4152 you cannot cascade amplifiers to get power from each amplifier added up to output. A power amplifier can only take a voltage signal and amplifies to give power at output, that means high current + Voltage at output.
If you want a high power amplifier either you can parellel them (like TDA 7293) or go and buy a more powerful amplifier (TPA 3255). This amplifier TDA8954Th is already bridged and do not support paralleling with any other amplifier. The only choice left is to replace amplifier.
This board is in bridgemode so it does NOT support 4 ohms. Check the specs of the chip
Yes it does not, but it doesn't deliver the rated power either on 8ohms.
Подскажите пожалуйста даташит схему на XH-M253
The same schematic is available with datasheet of TDA 8954TH. Look for PBTL configuration in datasheet.
Here's the link www.google.com/url?sa=t&source=web&rct=j&url=www.nxp.com/docs/en/data-sheet/TDA8954.pdf&ved=2ahUKEwjXn87qv5X2AhUySmwGHWQXCBkQFnoECDkQAQ&usg=AOvVaw2WKafQ5-gxHr9RoKPS9W-w
Спасибо эта схема тда8954тн а на XH-M253 нигде нет
Thanks for the detailed information.
You're welcome 🙏
From this i guess it's better to get a sure electronics class D Board instead of these 400watt ones you get get for 20bucks?
Thanks for the video!
I got it for 14USD from AliExpress different ones are getting up to 200W into 4 ohms. So it's sure chip is capable but the board sucks. Thank you for watching 🙏
@@EngineeringEssentials The company is called sure electronics :)
They work together with wondom.
They are basically high quality versions of those boards.
Yea like i guessed.. That the boards are not so great.
From the cheap ones this is the one i was looking forward to buy (not from this seller but the same board).
What do you think?
www.ebay.de/i/133477025520?chn=ps&norover=1&mkevt=1&mkrid=707-134425-41852-0&mkcid=2&itemid=133477025520&targetid=857896282222&device=m&mktype=pla&googleloc=9043815&poi=&campaignid=10215345574&mkgroupid=105782607727&rlsatarget=pla-857896282222&abcId=1139676&merchantid=113492620&gclid=CjwKCAjwrKr8BRB_EiwA7eFaphOmss8QniOdxe-9i8h1dTsbbJA7p4cLB9JQrHty-bv9-ZvBPJBCvBoC544QAvD_BwE
Thank You sir.
🙏
Super testing with scrap power supply. For this kind of testing u need 1.5 or more time powerful supply that recommended
Better Power supplies means better Power output, but I don't think enough to meet the rated power
Where to buy
I bought this one from AliExpress, also available on Amazon.
@@EngineeringEssentials one more information please only AliExpress app banned but is AliExpress send product if I order on their website
@@sandeepsinghjagdev3485 they will send the order for sure. But we don't know what will be the reaction from Indian customs department. Even if you order on AliExpress it's better to select a shipping options with tracking inside our country. This way if you didn't receive your product you will get the information, and possibly claim a refund from AliExpress.
12 inch audioex connect cheyyan patto
TPA3251 പോലെയുള്ള ആംപ്ലിഫയറുകൾ ആകും അതിനു നല്ലത്.
അല്ലെങ്കിൽ സാധാരണ കണ്ടു വരുന്ന 4 ട്രാൻസിസ്റ്റർ ബോർഡ് ഉപയോഗിക്കൂ
My tda7498e is 97rms in 8 ohms 32v psu
Nice 🥰
Gd sharing 🌹🌹
Nice 👌👌👌👌
Thanks 😊
ഫുൾ ഇങ്ലീസ് ആണല്ലോ ഞമ്മള് പോണോ നിക്കണോ
😅
subtítulos
It is English only
@@EngineeringEssentials es una pena porque si activaras los subtítulos conseguirías mas suscriptores