I posted numbers on this very thing on blowtorch, that showed maths that conformed 100% to Ohm's Law (as I pointed out, the impedance of a driver is not about the voltage, it is about what happens to the current of the amplifier). I reposted three times mathematical equations backed up by measurements that there is a direct correlation between current and the dB-SPL acoustic output based on Ohm's Law.
Scott Wurcer kind of finally got it and he then finally asked the right questions. The others just trolled. The two questions Scott Wurcer asked will be answered (he know what they are, that I am sure) and it will be done in a proper way.
So, I have made my statement above, it is not at all nosense and a proper peer reviewed paper with full measurements is in the works. Ohm's Law is at the centre of those measurements. These are actual distortion measurements, both electriucal and acoustical, these are slated to be included.
As usual, and a trap that you have fallen into, is for some to pre-judge a subject that is actually undergoing a scientific examination - and at a later stage may regret it.
I shall not go any further here. I will, as the saying goes "keep my powder dry" - I simply wanted give people here to have something to think about and if I say anything else, the "usual suspects" will appear here and the noise floor rise so high that nobody can hear anything. C'est la vie, such is life in an age of trolling.
Cheers, Joe
but, but, but Ohm's law is about the relationship between voltage and currents, how can you look at one and not the other?
I have gone from using push pull and SET tube amps to a Bakoon Satri AMP 5521. Bakoon amps are reputed to be current drive and have high output impedance and also use zero negative feedback. So perhaps they are more like a SET amp electrically.I would not say they sound exactly like a SET and it is even very hard to describe their sound other than they just sound "right". I suspect most people who like the sound of a good SET [not the soggy euphonic type] would also enjoy the sound of the Bakoons. They also would appear to be a bit less fussy about speakers than SETs although suspect they are happiest with speakers with simple crossovers and an impedance that does not dip below 4 ohms.
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I have gone from using push pull and SET tube amps to a Bakoon Satri AMP 5521.Bakoon amps are reputed to be current drive and have high output impedance and also use zero negative feedback.So perhaps they are more like a SET amp electrically.I would not say they sound exactly like a SET and it is even very hard to describe their sound but I suspect most people who like the sound of a good SET would also enjoy the sound of the Bakoons.They also would appear to be a bit less fussy about speakers than SETs although suspect they are happiest with speakers with simple crossovers and an impedance that does not dip below 4 ohms.
this brings to mind Susan Parker's Zeus amps....
but, but, but Ohm's law is about the relationship between voltage and currents, how can you look at one and not the other?
Sorry, but I find that a curious thing to say. Of course I am looking at both. What makes you think otherwise?
The measurement indicates a reactive load. Is this necessary or important?
I have to be careful about how I answer that question. As my phone number is quite public, no point in not typing it here. It's a 'local' call.
Cheers, Joe
0412-203382 (Int +61412-203382)
Sorry, but I find that a curious thing to say. Of course I am looking at both. What makes you think otherwise?
I have to be careful about how I answer that question. As my phone number is quite public, no point in not typing it here. It's a 'local' call.
Cheers, Joe
0412-203382 (Int +61412-203382)
what makes you think you did not give that impression?, but thanks for clarifying, you said what i wanted to hear.....i can rest easy now... 😀
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what makes you think you did not give that impression?, but thanks for clarifying.....i can rest easy now... 😀
No worries. But I have to be careful about what I say, based on past experiences, not exactly pleasant ones.
The reason I chimed in was an appeal to have an open, but still scientific, mind on this. The attachment scope screen shot shows two sine waves produced by the same amplifier. Yes, two sines waves are being produced at the same time, it cannot be disputed, you are looking at it, no gaslighting. They are both produced by the same amplifier within the timeframe shown on the screen. One is the actual voltage of the amplifier, the other is the actual current of the amplifier within 2% accuracy. It is a fair question to ask, which one are we listening to? We cannot be listening to both as they are different in time. We must choose. Classic motor theory tell us, we are listening to the current sine wave of the amplifier. Since they are in a different time step (determined by the current phase angle), it means that the driver is seeing only the current, the voltage is at arm's length in terms of time.
It took me years to figure out the above, I can see how it can be a problem for others, it is. It was a problem for me too.
The irony, and the reason I chimed in on this particular thread, is that tube amplifiers may actually be a better current delivery system that solid state amplifiers. That is not a statement, it is an open statement, it is a question. I am not an ideologue on this subject. I am a questioner!
So when people say that tube amplifiers sound better to some people, it is because they like even order distortion more than not having distortion, I am suggesting there might be a different answer: That tube amplifiers may actually produce less distortion in terms of current delivery and in fact they may well be producing much less distortion that we may have thought in the past.
IF that turn out to be an answer, would that not be some big turn around?
MAYBE our ears were actually telling us the right thing after all, that tube amplifiers actually sound more nice for good reasons, not just because some people like their music being seasoned by nicer type of distortions. They might actually have been right all along?
What is also truly interesting is that we might actually be able to measure it!!!
As for violating Ohm's Law, I am reminded about that ongoing gag on Top Gear where Hammond is constantly accused of whitening his teeth, even if it is also clear that he never did.
every idea will be challenged, to bring out the best of what there is....
crushed coconuts are tightly squeezed to bring out the "virgin coconut oil"....
crushed coconuts are tightly squeezed to bring out the "virgin coconut oil"....
I'm sorry, I don't see the connection. If you feel the need to discuss it privately, you may PM me.I have to be careful about how I answer that question. As my phone number is quite public, no point in not typing it here. It's a 'local' call.
Cheers, Joe
0412-203382 (Int +61412-203382)
The measurement indicates a reactive load. Is this necessary or important?
A speaker with non-flat impedance will have some reactive load (ie almost all of them). Sometimes it gets really reactive. Like an ESL. Or. awoofer in a (typical) box.
dave
Joe has a problem understanding Ohm's law, it's well documented in the blowtorch thread
Explain why Scott.
Althou i believe Allen quickly answered why.
dave
Bakoon amps are reputed to be current drive and have high output impedance and also use zero negative feedback. So perhaps they are more like a SET amp electrically.
A SET is typically not a current amp, but getting real close to crossing the theorectcal threshold.
Not much out there on that amp.
dave
I'm sorry, I don't see the connection. If you feel the need to discuss it privately, you may PM me.
Sounds like an opportunity to go listen to some stuff. I’d take him up on that (i have an invitation just need to get to Sydney).
dave
An excellent overview here.
Interesting that Lenard Audio believe most people will prefer the sound of current drive amplifiers compared to voltage drive.
Valve Amps: Valve verses Solid-state amps
Interesting that Lenard Audio believe most people will prefer the sound of current drive amplifiers compared to voltage drive.
Valve Amps: Valve verses Solid-state amps
A SET is typically not a current amp, but getting real close to crossing the theorectcal threshold.
Not much out there on that amp.
dave
Yes very little technical information about Bakoon amplifiers and their SATRI circuit out there.Maybe in Japanese?And just to confuse things there are Japanese made Bakoons and Korean made ones.
There is something really special about their sound however.The base model 15 watt is the biggest bargain in audio I have ever heard.Extremely sophisticated and high end sound for $2000.I have heard vintage Tannoys sounding sublime with that amp and much better than with $20,000 worth of Cary SETs and preamp.
It seems to be a lack of understanding of complex numbers, search the blowtorch thread if you are interested.Explain why Scott.
Althou i believe Allen quickly answered why.
dave
And yet we are, go figure.We cannot be listening to both as they are different in time.
It seems to be a lack of understanding of complex numbers, search the blowtorch thread if you are interested.
Complex numbers? Where do get this stuff? There was no discussion about any such numbers, but the sure was a discussion on simple Ohm's Law and it was answered with precise maths, so that even Scott Wurcer got the point in the end. I respect the questions he asked and he never asked for complex numbers. They are not even needed. But he will get an answer to the two questions he asked. So where is the problem when things are done by the book, you know, it is called science!
Please stop trolling. Ohm's Law first, then complex numbers next... what now? I can only imagine, but don't expect for me to respond, let others here judge what you are up to. No problem for me they doing any search on blowtorch. There are so many badly behaved persons there anyway, most get turned off by them (you should looks at the PMs I have gotten, all on the side of moi).
Bye.
Sounds like an opportunity to go listen to some stuff. I’d take him up on that (i have an invitation just need to get to Sydney).
dave
ANY TIME !!! 😀
Complex numbers are needed to understand and calculate what is happening in a reactive load. Anyone can find out this stuff for themselves, thankfully they don't have to believe what they read on this forum, heaven help us if that was the case 😉
... the blowtorch thread...
I don’t go anywhere near that thread.
dave
I don’t go anywhere near that thread.
dave
And yet you searched it for numerous quotes of mine about my tinnitus in order to cast my hearing acuity into doubt
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