Well said. Seems the preference is to keep speaker distortion as pristine as possible. 😀... But there is no interest in any case to reduce speaker distortion by the electronic guys. Also, tried to reduce distortion by a direct assault on the driver which showed promise but stopped due to some other bright shiny object. ...
Phono stuff. The final version will need a lot of relays if I ever get there. Downstream of that the miniDSP handles everything so digital sources don't need it. It is unnecessarily complicated, but its mine and its how I want it and really don't care what anyone else thinks as they won't have to listen to it.Fair enough - what's getting switched?
FWIW, when my system is, ahem, finished... it's optical connections and only one source (server) so.... 🙂
Except of course Bruno, or does he not count as an 'electronic guy'?But there is no interest in any case to reduce speaker distortion by the electronic guys. Also, tried to reduce distortion by a direct assault on the driver which showed promise but stopped due to some other bright shiny object.
THx-RNMarsh
Okay. Happy to wait until you have a chance to hear the best of HQplayer DSD512 on a good system and see how you feel about it then.
DSD is a pointless format. If you feel that your setup with a PC creating DSD512 from input PCM helps sound quality, then you have a problem with the DAC you are using. The answer is really to identify and fix it in the DAC if it is such a problem (I know you are not ESS, so I'm not suggesting you do this personally).
Insisting everyone needs to use ridiculous amounts of computing power to transform their data into another format which needs 45.158 Mbps per channel, when the actual source material may have been 1411 kbps uncompressed, seems more than a little bit out there. All just to work around some perceived issue you have with one single chip from one vendor.
All just to work around some perceived issue you have with one single chip from one vendor.
Two vendors, actually. ESS and AKM. I agree it is a crazy situation, and I think dac manufacturers ought to tell us why it is the way it is, or if they don't know why then just say so. Its not just one brand that has the issue.
There seems to be some difference of opinion about PCM vs DSD for Holo Springs ladder dacs (perhaps the best sounding example of that general type). The importer says DSD1024 is best if one has a computer that can do the processing, and most buyers seem to agree with that view. They are mostly people who don't like the sound of SD dacs. A small minority seem to prefer PCM with that particular dac family.
Two vendors, actually. ESS and AKM. I agree it is a crazy situation, and I think dac manufacturers ought to tell us why it is the way it is. Its not just one brand that has the issue.
I'm not aware there is a broad consensus other than a few people on the same thread.
The consensus is probably mostly limited to people who listen to/for small details of sound quality when they are listening to music. Of such people, and I don't know what percent of the general population it is, there is only a subset who have the wherewithal to indulge high quality music reproduction. Its cheaper than polo ponies, yachts, and jets, but still has a cost.
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Jeez Mark, you are such a snob.
Not really, although I can see that it might seem offensive if taken in a way other than as I meant it. I think its just facts of life, its not saying anyone is any better than anyone else. There is a market for certain types of products, and some items are luxury goods, like cars with leather seats for instance. Some people want those things, believe they are objectively more comfortable, durable, or whatever, and can afford them. Other people like me drive cheap cars so we can have a little wiggle room to play with audio. So what?
As far as I can tell, it is a very, very small group of people that THINK it is better, with no evidence. So, no, it has nothing to do with those that prefer to consume luxury goods.The consensus is probably mostly limited to people who listen to/for small details of sound quality when they are listening to music. Of such people, and I don't know what percent of the general population it is, there is only a subset who have the wherewithal to indulge high quality music reproduction. Its cheaper than polo ponies, yachts, and jets, but still has a cost.
So what? It's like you and/or they miss what music is actually about. Some of those audiophiles have all of 6 records in their collection, Kind of Blue being mandatory of course 😉🙄
As far as I can tell...
I know. That's okay.
This is going to turn into one of those never ending forum disagreements if we don't leave off somewhere. No sense in repeating the whole thing all over again.
I will stop here.
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I know. That's okay.
This is going to turn into one of those never ending forum disagreements if we don't leave off somewhere. No sense in repeating the whole thing all over again.
I will stop here.
I totally understand and I'm not trying to attack or put you down. I just think pushing your opinion on this matter as an absolute truth needs to be put in perspective.
I put Goop putty on the underside of my wineglasses and that improves taste, not sure about wineglass on the turntable 😕.Saturday evening. A glass of Priorat and Stravinsky on the turntable.
Dan.
I would like to ask the participants if they are willing to continue provide their tolerance/acceptance/encouragement toward trolls for the sake of self entertainment but against the intellectual/rational/technical quality of the forum
George
George
George,
There are times I feel like a troll here, but there certainly are folks who add lots of verbiage I don't read just looking at the person posting.
As an aside my friend Tasso while visiting relatives in Greece years back during a heat wave came down with heat stroke. (Smart guy without the common sense to slow down in the heat.) It was misdiagnosed as a virus and not properly treated. He made it home in bad shape and as a result learned about myofascial trigger point therapy, which restored him to his usual astoundingly active self. As a result he trained in it, started a school to teach it and a national organization to promote it. His son is still running a clinic. I was reminded of this because we currently are having a heat wave. Before that he had a stereo store. Which closed due to his time being ill.
(Now does that story count as trolling?)
There are times I feel like a troll here, but there certainly are folks who add lots of verbiage I don't read just looking at the person posting.
As an aside my friend Tasso while visiting relatives in Greece years back during a heat wave came down with heat stroke. (Smart guy without the common sense to slow down in the heat.) It was misdiagnosed as a virus and not properly treated. He made it home in bad shape and as a result learned about myofascial trigger point therapy, which restored him to his usual astoundingly active self. As a result he trained in it, started a school to teach it and a national organization to promote it. His son is still running a clinic. I was reminded of this because we currently are having a heat wave. Before that he had a stereo store. Which closed due to his time being ill.
(Now does that story count as trolling?)
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George, it is hard to decide who the trolls are!
Most here appear to be completely serious, even those with utterly unfounded preconceptions, whose lack of intellectual rigour is only surpassed by their general unwillingness or inability to comprehend the way I understand matters to be.😀
In other words, who is to judge? Therefore, I suggest we fight trolling by sin binning anyone who accuses another poster from trolling and stop it there.
Most here appear to be completely serious, even those with utterly unfounded preconceptions, whose lack of intellectual rigour is only surpassed by their general unwillingness or inability to comprehend the way I understand matters to be.😀
In other words, who is to judge? Therefore, I suggest we fight trolling by sin binning anyone who accuses another poster from trolling and stop it there.
Phono stuff. The final version will need a lot of relays if I ever get there. Downstream of that the miniDSP handles everything so digital sources don't need it. It is unnecessarily complicated, but its mine and its how I want it and really don't care what anyone else thinks as they won't have to listen to it.
Excellent. The very nub of DIYA..... "It's my system, I love it and that's all that matters". 🙂
I put Goop putty on the underside of my wineglasses and that improves taste, not sure about wineglass on the turntable
What happens if you drink goop? Does it make you a better person? 🙂
DSD is a pointless format. If you feel that your setup with a PC creating DSD512 from input PCM helps sound quality, then you have a problem with the DAC you are using. The answer is really to identify and fix it in the DAC if it is such a problem (I know you are not ESS, so I'm not suggesting you do this personally).
Insisting everyone needs to use ridiculous amounts of computing power to transform their data into another format which needs 45.158 Mbps per channel, when the actual source material may have been 1411 kbps uncompressed, seems more than a little bit out there. All just to work around some perceived issue you have with one single chip from one vendor.
You beat me to it.... 🙂
Have you heard of the work by Hans Van Maannen (he is a scientist, but not the name I alluded to earlier) and his EQ of current reduces distortion in Class AB amplifiers and he point to a major reduction of higher order distortions? Why Class AB? Because the feedback loop cannot easily correct the current of the driver not matching the current in time (it is an active 3-Way system). Very interesting. Bit by bit, things are being looked at from a more current-centric point point of view and it leads to better sounding speakers. I mean, I only wish some of you guys can hear it. One of the guys who appears here from time to time is actually coming this weekend. Up to him, maybe he will post his impressions? I won't press him, that is not my style.
Hans van Maanen of Temporal Coherence has commented on this as well. Consider this, the transition from Class A to Class B, the voltage and current not lining up (current phase angle) and the feedback of the amplifier can only correct for voltage will produce higher order distortion products. So yes, using Class A is a good thing for these kind of measurements.
Joe, I have prepared a set of measurements especially for you. Not that I wanted to argue, but just for fun and my pleasure.
There are two amps in the test:
1) class A no global feedback amplifier with 0.22 ohm output impedance
2) class AB amplifier with strong global NFB and output impedance of some 0.01 ohm, approx.
None of those amps uses output coil.
The amps were loaded with a RLC dummy load that simulates a free-standing woofer quite well. The big inductance is a ferrite core coil, which is pretty non-linear and in this regard it simulates speaker non-linearity quite well.
The measurements into this RLC load were compared to amps distortion without any load.
Attached measurements show RLC dummy load impedance and distortions of both amplifiers into RLC dummy load and to no load. Class AB amplifier, with high NFB and high DF, "controls" the output voltage in the frequency band where coil non-linearity is present much better than the class A amp with 0R22 output impedance. Current distortion is a mere division of ouput voltage by circuit impedance and class AB high NFB high DF amp has again lower distortion. So there is no question what is better, speaking about parameters and measurements.
P.S.: 0.001% is not far from system measurement limit (about 0.0005%), so phase of distortion components may play the game and distortion values below 0.001% should not be considered.
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I would like to ask the participants if they are willing to continue provide their tolerance/acceptance/encouragement toward trolls for the sake of self entertainment but against the intellectual/rational/technical quality of the forum
George
I would never think of myself as a troll nor act like one, although others may disagree, and that in itself is so distressing I can no longer participate in this thread. My apologies if this may appear as trolling.
Current distortion is a mere division of ouput voltage by circuit impedance
This is a measurement of distortion of the current flowing into the RLC dummy load used, at 8V. The main cause of the distortion is the ferrite core non-linearity and this dummy load is good to demonstrate effect of the non-linear impedance. Current distortion was almost same with amps (1) and (2). This current distortion reflects in amp terminals output voltage distortion as a ratio between amp output impedance and RLC load impedance at a given frequency multiplied by current distortion at a given frequency. Complex numbers to be considered. So the class A (sample under test) result is worse because it has higher output impedance.
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