John,
Torroids can work too if well designed. Jam has some good power supply torroids made to his specifications. Same for interconnection cable wires, very interesting wire that is too. Trying a pair of Jam's cables for connecting AK4499 balanced outputs to Neurochrome HP-1 balanced inputs sounded different enough to cause me to do a number of cable comparisons, including the latest Mogami star quad. I was pretty much stunned to find they all sounded different, some better than others, at least in that particular application. There went another long-standing belief I had to discard. Couldn't believe 3-feet of high-quality balanced line could have a sound. (Connectors were made the same on all cables to rule out effects possibly caused by differences there.)
To be fair, I think I know that some of what is going on with the cable can be accounted for by a little very low level RF leaking out of the dac. However, I am told cables sound different in other applications too where there is no known source of RF.
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This seems to me a twisting of the reality or at least the part of it that has been displayed here for some years but in the end you come in line with Mr. Wurcer.
I would have no chance with a 20 years old, metal case CASIO on my wrist.
George
I have another one. Hears any kind of goops but fails to hear 1% of H2 on sine wave in a DBT. Such is audiophile life.
Contrary to me now that is hilarious, I have to admit my car finally got washed but that was because they did some body work and the wash was a courtesy. I never wear a watch either. I guarantee you will get the same good service from any street food vendor in Asia even if you don't wear a watch.
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Nah. Thats just spin. Maybe because I like high performance and quality and buy it.
I have always been the same.
-Richard
-RNM
Why would you believe such cables to sound the same in the first case ?.
How long have you been involved in audio for this to be such a revelation ?.
How different are the RLC electrical properties of the cables you have auditioned and what do you think is the mechanism ?.
And you have not experimented for yourself, what are you waiting for ?.
Dan.
Hi Bob, yes this Dance/Club music does not have to sound 'real', in fact the laid on effects are expected part of the genre.
Agreed, getting 'unnatural' music to sound good can be useful in getting other genres to sound right.
Ok, so you hear differences in tweaking of the same interconnect cable, now just wait for 'non-believers' ie believers that there cannot be difference to insult you and try to drag you down, such is life.
So thanks for responding, do you reckon you would be able to differentiate any two files in ABX ? (I'm not asking you to do so, I'm just asking if you reckon that the differences are strong enough for you to pick).
Regards, Dan.
Grow up Chris.
Checking out the old neighborhood!
Hi John.
Its been close to five years since I have visited this forum and it's good to see your still alive and making waves; still trying to steer the conversation back to the grey areas of audio design as well. Good luck with that!
I hope the world is treating you well. Best regards, Mike
Hi John.
Its been close to five years since I have visited this forum and it's good to see your still alive and making waves; still trying to steer the conversation back to the grey areas of audio design as well. Good luck with that!
I hope the world is treating you well. Best regards, Mike
I hope that someday there would be found a way to show with measurement that elusive cable difference so many seem to hear. Let me point that it had been quite difficult to show a difference between current drive and voltage drive on midrange and tweeters using single tone tests while FFT spectrum on a multitone test show a difference easier to evaluate. Technical understanding on a previously unmeasured issue should fuel better advancement in audio since all subjective opinion is difficult to communicate and more or less biased. But as NP said "... it's a subtle thing. I don't suppose everyone can hear it, and fewer particularly care ...".
I'm sorry... What is "preferential treatment"?
..as to the "gang up on Richard" crowd..I totally agree, he needs to be TAKEN DOWN...
Not sure why, but that's not gonna stop me..
The watch thing, I cannot speak from experience on such a cultural thing but can certainly understand such a difference. I may not think along those lines, but it seems some here are arguing points as if Richard defined the cultural behavior...as opposed to reporting such..
As to the 12 cylinder car and lack of desire for material things, yes I do see a disconnect there.. But, life moves on..
Dan...you cite as proof of your oddball theories, a fully debunked crackpot. I also find such posts and links offensive.
Jn
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Amen.
While some circuits have better PSRR than others, I think power supply quality has a major influence on sound quality, or letting the powered circuit perform as designed.
I found it interesting on the build thread for Salas' "Folded Simplistic Phono" that some people claimed to get better performance by using a hugely over-spec'ed transformer in the unregulated PSU. Of course, the phono preamp circuit itself is a single-ended design with essentially 0 PSR, but the overall circuit includes a very good shunt regulator with very low noise, low output impedance over a wide bandwidth, and very good regulation. Those advocating big transformers (as in 90VA or more for a phono preamp) would say that these oversize transformers have better response to transient load changes. But the first part of the regulator is a CCS, so the load seen by the transformer is static, the current drawn from the raw supply is never more nor less than what the constant current source is set to draw, so there is no dynamic load seen by the unregulated supply.
I have no reason to doubt what people heard when they did the experiment, and I didn't try other transformers, but I can't make sense of the offered explanation.
+1
Yes, no problem with what people heard. But wrong, nonsense and shameless deceptive explanations really muddy the water. I found them quite often and offensive as well.
I would say much of audio circuitry is good engineering especially if you look at the instrumentation industry. Bob Cordell’s excellent new book would also be a good example. But none of these tell us about the sound we will get in the end.
That part can take a fair amount of time and is where ears and experience come into play. Audio keeps improving even if it moves forward and backwards and sometimes sideways. Like my dad says about church I wouldn’t come here if I didn’t hear something that was worth at least thinking about.
That part can take a fair amount of time and is where ears and experience come into play. Audio keeps improving even if it moves forward and backwards and sometimes sideways. Like my dad says about church I wouldn’t come here if I didn’t hear something that was worth at least thinking about.
In my experience the bridged concept of power amplifier results in "better audio quality", mostly for the reason that CMV output interference voltages are suppressed to high degree, even at very high frequencies. The amp should be designed as bridged from the beginning, that means the simple bridge connection of a commercial amplifier will probably not make the same job. The other advantage, other than CMV suppression, is the fact that analog ground is not polluted by high current load return.
Some scope screens attached. It is measured at speaker terminals, behind 6m of the speaker cable, in my listening room. Measurements made against analog ground, outputs OUT+ and OUT- connected to CH1 and CH2 of the oscilloscope. One can see that CH1 and CH2 traces overlap. The EMI signal is a local AM transmitter, operating at 1062kHz. However, the load sees the difference signal, CH1 - CH2, which is represented by the red oscilloscope trace. We can see that it is clean, and it keeps clean even in a higher time resolution. Same principle works even for potential LF CMV.
BTW, everything is a "textbook engineering", depends on level of application. Personally, I do not appreciate dissolving the issue to common uncertainty and mystery, which makes the starting point to magical cure.
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I have been long enough in audio to know all cables sound the same, bar some outliers, and that those who argue differently usually do so for financial gain.
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