TDA8954 Class D 420 Watts x 2
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- čas přidán 13. 01. 2021
- This is a first look at the TDA8954 Class D Amplifier. This is the TDA8954 Class D 420 Watts x 2 Amplifier video. I'll see how much power I can get out without clipping and I'll measure the THD (Total Harmonic Distortion).
Links to support this channel that cost nothing extra;)
Link to TDA8954 Class D amplifier: amzn.to/2LBqvxF
Adjustable PCB holder: amzn.to/2XhH1pe
1 Ohm 3 Watt metal film resistors: amzn.to/2BO0h64
Audio Grade 220 uF 35 V capacitor: amzn.to/2BNFbET
Silver Solder: amzn.to/2Dv7wQL
Soldering Iron T12 tip: amzn.to/39MQARR
Heatsink TO-220: amzn.to/3gkO8EB
Thermal Paste: amzn.to/3i1AZ43
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Hi Eddie, very cool, nice video. Thank you.
Thanks so much for your support!
Thank for this video
Keep going
Thanks so much! I appreciate you!
Thank you sir, learnt something I would have not on any other youtube channel I guess..
Thanks so much! I hope to pass on a lot more info as time goes;) Let me know if there is anything specific that you are interested in.
Hey just wanted to say this is awesome! I saw this amp on tayda for $9 and I was like, what? Couldn't ask for a more thorough bench test. Great work!!
Wow, that's great! Thanks for the feedback!
Is it possible use that for bass guitar
I've found this channel searching about crossover. What i didn't get is the phase. How we should align the phase when cutting the signal?
I'm glad you found us;) I think the phase should be considered and in a crossover especially so that all speakers are aligned.
Sir KissAnalog a question...
the datasheet says 4 ohms in stereo and 8 in bridge but why many sellers of the same power amplifier you test they say can work in 4 ohms in mono. i believe more in the datasheet instead of the sellers
8 ohms in mono is the correct load
tnx
Thanks
Dear sir,
Thank you for good information about this product.
Please I need your suggestions ,
I have three boards of this audio amplifier,
3×(210w+210)420w board,
How many volts & watts of transformer require to operate for 3×(210w+210w)420w=1260w.
Thanks for the great question. Your math is very close, but technically the efficiency would need to be taken into account, and then some margin for temp rise. On the other hand, what's the chance that all 3 will be at the max power - and still at any length of time. So, I think it really depends on the use.
Do not know if you knew this. You do not get more out of an amplifier than what is max A. and V. Out from the amplifier ic.
so you do not always get that much more watts out if you bridge the amplifier.
Hello sir.. Please i need your help about that Board...
I want to know if i can run it using BMS 6S 24V TOTAL BATTERY 36 PCS 3.7 LITHIUM.. THANK YOU
Thanks for the great question! This board is set up for an AC input, so it does want a plus and minus voltage. It is possible as I have done, to power it with DC input voltage, but it does still want the plus and minus voltage. But this Class D can run off of a single DC input and your 24 V would work. czcams.com/video/eybcVbWgFdA/video.html
Hi! Hope you are doing well! With 24 0 24 transformers and 8 Ohm speakers, how much wattage of power(at actual) should I get from each channel?
Thank you! I'd think the power would be closer to 270 Watts into 8 ohms.
@@KissAnalog Thanks you very much!
with 24v transformer you will never get 270w.
L15D provides 150w with
50v-0v-50v DC 4 ohm.
TPA3116 24v power supply 50w 4 ohm.
you need up to 60v but amplifier ic. can not handle 2x60v.
C
an you put a link for the wire clips as seen in other videos...thx..
Thank you for reminding me of this;) I appreciate you!
Another thing that I don't get is how to reduce thd+n. It seems all about gain but a lot of class d don't have a gain regulation. So for what I can understand is that you have to give him full supply voltage but reduce the input signal. In this way it does not saturate and can work better...
Thanks for the question. It is important to look at THD with Noise especially in a Class D to account for noise not associated with harmonics.
Great video tonight no interruptions lol
I was wondering about running that amplifier in a positive and negative rails format with two Transformers push-pull that would be a better way wouldn't it?
You would "NOT" want to do that..
Thanks John! I think I learned how to turn off those adverts. This is in the bridge tied load topology which might be compatible to the push pull. One side of the bridge is pulling one direction while the other side of the bridge is pushing the opposite direction. ;)
do not know if you knew this. you do not get more out of an amplifier than what is max A. and V. Out from the amplifier ic.
so you do not always get that much more watts out if you bridge the amplifier.
Great video. Learned something new. I never knew THD was measured at 1 watt. Over 120 watts is pretty loud. I notice you have those bookshelf speakers on the bench. Have you tried listening to the Amp to see if it has a pleasant sound quality? I ask because I have been buying up Amp kits off ebay just to see how they sound. The different IC's really do have different sound qualities.
THD can be measured at any watt you want.. Some are useful some are not. :)
Thanks Tron! I think 1 Watt was just convenient for specs to use to compare amps of all powers.
If you are interested in the performance of the amplifier, THD would be specified at the full rated power. Many low integrity manufacturers will play numbers games and specify great numbers at very low power levels which is not in any way reality.
@@timothygrupp but this chip has been tested on a dyno and its specs are legit . here is one do some research before you out yourself . you came here with negative intent . tube amps are great , but i run a whole band rig on li ion cells utilizing class d because of its exceptional EFFICIENCY and thats the primary reason i use them. with class d we simply would be unable to do what we have done which is make music with our family band out doors for many years . sure electronics is not a low integrity manufacturer and the flea market spec days you refer to are long gone .
hi, i don't understand much english, does the module really deliver 420w rms? I have a 24 + 24v 14 amp transformer. Greetings from Argentina
Thanks for the question! Yes, it is spec'd for that, but at 10% THD. Also, you will need higher voltage output, probably 30 + 30 V
with 24v transformer you will never get 270w.
L15D provides 150w with
50v-0v-50v DC 4 ohm
TPA3116 24v power supply 50w 4 ohm
you need up to 60v but amplifier ic. can not handle 2x60v
very nice. I like this modul... thanks to rivews. I from Indonesia
Great to hear from our friends in Indonesia!!
Great to hear from our friends in Indonesia!
I have bought the same board but it has 50V 1000uf capacitors each do I need to change those capacitors to 63V 2200uf for better performance.
Depends on what voltage you use to power this. If you max the voltage out, Yes I think 63V is more appropriate.
with 60v power supply. amplifier ic. and the heatsink gets VERY hot. Heatsink is then too small!
Will this amplifier power 600w RMS subwoofer. Thanks.
Thanks for the great question. I think it would do just fine. It is good to have a speaker rated more than the amp so that the amp will not over drive it or damage it.
You should do a review of the Redfish meter, It looks interesting!
Thanks Geoff! I will do a review on this meter. They sent it to me as a loaner so that I could do a review, so I thought I'd try it out on some of these videos;)
WOW! 420w 😨😲
LET'S ROCK!👍
LOL We'll investigate further on what power we can get - but in the meanwhile - let's ROCK!
@@KissAnalog I can't wait to see the results when you hook the bigger Transformer up to it.
I am just a hobbyist & understand the basics but, I'm sure glad I found your Channel!
I just purchased my first scope today from watching one of your videos.
The Siglent SDS 1102CML+ 100MHz -1GSa/s
I think it's a good scope to learn on . Thank you !👍
@@ronniepirtlejr2606 Yes Ronnie, that should do the job and have fun working with it;)
Hi, nice video. I don't understand, I can power this amplifier with dc power or pc power supply.
PC power supply is DC
You can run it with a +/- DC voltage rails, but it is designed to run off of AC voltage and make its own DC voltage rails.
Your power measurement looks identical to what I got, but I am surprised at the current waveform. Voltage looked like ok, then how current waveform could be different? Again you're probing against a resistive load. Is anything I am missing?
PSU isn't large enough to push amplifier to full power. Good to know this though, Class D amplifiers like regulated SMPS for best performance.
That's a great question! If you put a particular current waveform into a resistor you would expect to see the same waveform in Voltage;) I need to investigate this more. There is an LC output filter, so it is possible that the phase is changed somewhat but it is still a bit tricky to explain away. I'll do more experiments and we will see what we find. Stay tuned;)
That's true, so I will go to the larger transformer to see how that affects our voltage rails and output signal.
@@KissAnalog you should try a smps, I can post a link. I'm about to try one for an amplifier and test against a nice crc psu in class a amp.
@@KissAnalog sure, could you please check whether these inductors are apt for this work? May be they are getting saturated when pulling high current. Thank you for the reply 🙏
I m from Bangladesh.
How many RMS will I get if I give 24-0-24v power to this circuit board.
Thanks for the great question! It depends on the size of the capacitor and the load. It could be as high as 34V. That would also be the peak of the voltage, so a cap can charge to that value.
My favorite amp is 5W and 10% THD at full rated output, manufactured in the early 1950s, has those glass valve thingies, and sounds awesome with a guitar. High power and low distortion aren't everything in life... ;)
That’s awesome Tim! Thanks!
commenting on a class d video about valves . classic .
The difference between measurable differences and your opinion, is that one put us on the moon, the other... well everybody's got one don't they :-)
@@gulogulo7636 Ooooooook.
Very good product thank you sir how much dollar please tell me.
Thank you! The price is just below $60 USD amzn.to/2LBqvxF
Link to this Amp: amzn.to/2LBqvxF
Orange meter awesome PANEL parameters 🤩
Thanks! I hope to make them work;)
Eddie, I think we've all been waiting for the blooper reel.
LOL Ken, I have plenty! But, most are probably not PG;)
Do you recommend this amp?
Great question. I plan to do another video on this to see how I feel.
These cheap CLASS D amplifiers are always given much more watts on paper than what is true.
They also do not have particularly good sound quality.
cheap class-ab always better sound quality than the cheap class-d has. I have many class-d amplifiers and class-ab.
The older
hypex ucd180 has good sound quality.
FIRST !! YES !! I win !! Watching this now !!
That's awesome! Thanks for your support!
so its 159 watt x 2 at 8 ohm !?
I need to do more testing before I really know. I got caught up with the Class A project, and need to get back to this;)
I have a pro Class D and see them from time to time on my workbench. But I have never seen a toroidal transformator hooked on a TDA amp. For full efficiency, you need a SMPS to get all the benefits.
Thanks for the great feedback!
Your lab😍
LOL Thanks!
do not know if you knew this. you do not get more out of an amplifier than what is max A. and V. Out from the amplifier ic.
so you do not always get that much more watts out if you bridge the amplifier.
Thanks! That’s a great point;)
Kalo beli caranya gimana
Thanks for the great question! I have a link in the description below, but here is the link: amzn.to/457QPCU
looks very interesting, but if you look at the price and power output, maybe products from my country are better than this, like d2k8 class d fullbridge (2800W) from Wahyu Eko Romadhon (his Yt channel) price under $100, btw Thank you for the video and review, greetings from Indonesia 🇲🇨🇲🇨🇲🇨
Mantap
Thank you!
Why in the world do those fans have nvidia logo on them ? What a mystery O.o
LOL They are pretty low noise;)
They're not stock NVidia coolers that i can think of, but they're likely aftermarket coolers that somebody might have made a bunch of and never sold, and they're just NVidia branded to make them look more legit. For maybe midrange to higher end older GPUs like between 6000 and 9000 series, or the likes of GT240 and GT440. They might have even been made with a mistake such as not observing the keepout area, so these might not even actually fit on the real GPUs. :D
If you're designing for random parts that you can find in the Shenzhen markets, this approach makes total sense, since NVidia has kept the same cooler mounting hole pattern for the longest time. And a lot of cards shipped with junk coolers that were either noisy or fell apart, so there was demand for aftermarket cheap and not quite horrible ones. There are also refurbishing operations that put new coolers and often fake firmware on older GPUs that they fish out of junk, so somebody has to be making those fresh coolers, so the amp manufacturer probably won't run out of compatible coolers for a LONG time to come.
@@SianaGearz Hmm now that makes sense ! Thx 4 the pretty elaborate answer :D
I have the redfish and I have the software data logging app downloaded so you can display it on your iPad or android screen
redfishinstruments.com/wp-content/uploads/2017/10/iDVM550-Manual-rev_0.4.pdf
This may help you for displays while doing videos so you don’t have to pick up the meter and read numbers you can actually watch a graft on a laptop or pad screen.
I think watching on a large screen might be nicer than on the face of a phone
Go to the bottom of the manual in the link to download the software you also could do capacitor testing under load.
Thank you! I just got this meter and am going to do a review once I get some work with it. I appreciate your help!
Que desperdicio de 33 minutos para explicar cuanto potencia da cuando la fórmula original es voltage alternada de salida salida al cuadrado dividido la impedancia
Almost better highfideldy THD
Great to hear from you!
the NVidea fan will cost it more, lol.
LOL thanks!
@@KissAnalog 😆
Sir, what digital oscilloscope is the best for 100MHz range, 2 channel at least?
Lots of talking but you skipped showing how you hooked it up .Can't understand why you need to use Thousands of dollars testing equipment to test a simple 60 or 70 dollar amplifier
Thanks for the questions. I did go over the setup and wiring. Did you want to see me actually making the connections? I have a playlist with this amp board. I also have some new videos as this one czcams.com/video/NlExOwHdDMQ/video.html
I try showing how to use lower cost equipment but it all does cost money;) I can never make everyone happy, some don’t like the time spent watching me make the connections but others like it, so in this video I tried just to walk through the setup. I’m curious what minimal equipment would you like to see?
James hetfield over here 🤔
LOL I'd play some music in the background, but CZcams wouldn't be happy with me;)
No doubt haha. On a serious note, I don't know a deal about electronics but thoroughly enjoyed your video. Quality analysis and interesting. Surprised how good this little unit seems 🤘. Cheers buddy 😊
@@ayautomotivevisuals Thank you!
The result is not surprising!
These cheap CLASS D amplifiers are always given much more watts on paper than what is true.
They also do not have particularly good sound quality.
cheap class-ab always better sound quality than the cheap class-d has. I have many class-d amplifiers and class-ab.
The older
hypex ucd180 has good sound quality.
L15D with 50v-0v-50v DC. measures only 150 watts with 4 ohm resistor!
Thanks for this great comment;) I think many amp kits as well as built amps are not well spec'd;) But, yes they do want to push the numbers up with these Class D amps.
The result is not surprising!
These cheap CLASS D amplifiers are always given much more watts on paper than what is true.
They also do not have particularly good sound quality.
cheap class-ab always better sound quality than the cheap class-d has. I have many class-d amplifiers and class-ab.
The older
hypex ucd180 has good sound quality.
L15D with 50v-0v-50v DC. measures only 150 watts with 4 ohm resistor!
Great point!