exactly, thank you for your comment, people don't want to see content with a lot of technicality,.
In addition the video is aimed at beginners not at experts like those who left bad comments above and who lack respect.
if I published a small project simple to carry out it is because it is addressed to the general public, and if you are better than me in electronics show it to me with a poly manner!!!
real scientists have a very high spirit of respect and communication above all to convey information well to others.
Education is above all.
He first spams us to gain some clicks on Youtube and then preaches about science and education. This guy is extremely shameless and ignorant.
Let's do the right thing and stop helping him to gain more clicks.
Yes, there are already plenty of Q&A forums for beginners but the OP's approach to beginner projects is a cynical one where he assumes ~24% THD is OK. I find that result for any audio design a bad failure. Indeed, why should anyone else respect that?
If you hadn't realised it yet Homemade Audio, this is a forum frequented by a very wide range of professionals - scientists, engineers, technical authors, music industry pros, specialist technicians and loads of experienced amateurs, many beginners too - all with a passion for quality audio systems and perhaps the occasional fun and simple project. Here is where a line is drawn as performance switches from just fun or interesting to grossly flawed and any normal (particularly beginner kids) pair of ears knows it.
If you hadn't realised it yet Homemade Audio, this is a forum frequented by a very wide range of professionals - scientists, engineers, technical authors, music industry pros, specialist technicians and loads of experienced amateurs, many beginners too - all with a passion for quality audio systems and perhaps the occasional fun and simple project. Here is where a line is drawn as performance switches from just fun or interesting to grossly flawed and any normal (particularly beginner kids) pair of ears knows it.
He has not yet published a schematic.
But by the guesses here it is not a project that is worth the time to bother.
But by the guesses here it is not a project that is worth the time to bother.
shamelessly ignoring whoever wrote these words, you don't belong here, it's for the passion for sound, not for people like you!
I work in a university with these people (professionals - scientists, engineers, technical authors, music industry pros, specialist technicians...) and they are very poly then those who attacked me hard because I published a simple project!!!!
As you are a member of this forum since three days you are certainly not the one to decide who belongs here and who doesn't.
Please take your time to read some of the threads here. Then you can see it is NOT only about the "passion for sound". It's about the passion to start with an idea, discuss this idea, develop a sane and safe circuit together, build prototypes of this circuit, measure it's performance under real conditions and so on.
I don't think DIYaudio.com is the place to drop some shady YouTube Video for clicks. To me it looks like you don't want to discuss your circuit. To me it looks like you just try to use diyaudio.com to promote your YouTube channel and gain some clicks.
I am not against simple projects. I don't think you read our messages. There are obvious errors in your project that you do not understand and do not want to discuss.
25% distortion 😆
Enjoy your 👎 clicks, I'm punching out of this one too as it is obvious there is no interest in simple improvements that could make a very simple, useable amp.
How can I discuss technical things with rude people? Here are some of their messages:
- This guy is extremely shameless and ignorant...
- guesses here it is not a project that is worth the time to bother...
-Looks like some slop from a 12 year old that found a soldering iron in the trash would make.
"Look Mama!....... I'm a technician
-I've seen some terrible circuits like this on youtube
Tell me what language should I speak with his comments, surely not technical!!!
1) If you add a 1 ohm resistor, emitter to ground, emitter is no longer at ground.
2) voltage developed across that resistor is in series with and in opposite phase (so substracting) from input signal, reducing stage gain from open loop (say 100X , didn´t do the Math yet) to about 8X or less, basically Rl/Re.
It is NFB, big time.
It will reduce distortion big time too, increase input impedance, etc.
Not sure the OP has any clue about that, he just copied 1000 other cheesy videos, all low quality (being polite), competing for subscriptions and views.
Thanks for the explanation JM, I had in my head feedback in the sense of a portion of signal being brought from the output to the input side. I honestly hadn't put much thought or time into it before asking. My bad.
The sim with 1 ohm showed the reduction in gain, but still 22% distortion at 1W.
The sim with 1 ohm showed the reduction in gain, but still 22% distortion at 1W.
3 days in and the OP is acting like a moderator.
A major spammer joins us about once a year. I consider this place to be a respite from rude and ignorant bullies.
You won't get far being rude to established members here OP. Someone of your proficiency ought to shut up and learn something.
A major spammer joins us about once a year. I consider this place to be a respite from rude and ignorant bullies.
You won't get far being rude to established members here OP. Someone of your proficiency ought to shut up and learn something.
^^^^ that.
You can´t discuss anything Technical with anybody, sorry.
Simple, don´t post crappy circuits and you will not get comments pointing that fact out.
24% distortion at one watt output?
Boy, your standards are real low.
Such an amp would be an improvement ... in 1906 and only compared to earlier mechanical wax cylinder record players.
Notice you are using a competent music source (a smartphone) and very good and expensive JBL PRO speaker, and then you destroy their performance by using a terrible "amplifier".
Wrong.
All the various Zen projects are as simple as yours ... but well made and very usable.
Our concern with your project is that it´s both popular and horrible, a bad example for beginners who deserve better.
Even 1W is too much for that circuit 😱
Rodd Elliott got 6V RMS into 8 ohm with about 1% distortion, in both his amps: Mosfet and Bipolar which amounts to 4.5W RMS ... but he uses a 35V supply!!!
To boot, the OP load is 2 x 8 ohm resistors in series, speaker connected to their junction, which is useless, and it further reduces available power.
Bad choice piled over bad choice.
The schematic on the video referenced by post #1 is truly terrible, but the author is good at filming, and it is promoting our hobby on a platform watched by many joung beginners. It seems more skilled on speakers rather than amplifiers. Maybe it simply had not enough time to research/develop a proven schematic that can be featured on the choosen format: point to point wiring, minimal component count, low-cost, only basic tools available. Maybe we can give him a few suggestions for future videos.
This thread has run its course.- Status
- Not open for further replies.