I have done a small amount of testing for short periods on full range systems. I was not in the mood to damage them so this were not extensive testing. Speaker level only and I received the same results.
No can do. I need the ability to switch back and forth. The boombox wiring is all internal. Besides, the quality of the boomboxes is far too high to recognize any difference with the QP's. I think I have to use something more mid-fi so it's line with what John is discussing. You know, the kind of system that experiences tizziness. No tizziness to be heard, only crisp, clean unadultered sound here my friend.
Totally seconded.
Hi Chris.
Yes, I do recognise that Cal (Hi Cal) initially widely tried the qp's and got a mostly nil result and that this would encourage disappointment....even disdain considering the financial and physical effort spent and any insults...star material agreed.
I am merely attempting to encourage Cal (Hi Cal) to understand and compare fine sonic differences....and then use words to describe what is found....or not found.
A discussion of quick change connection methodology would clear a lot of things up and encourage progress.
Nah, Cal (Hi Cal) is having way too much fun building stuff to need any retainer and yup, it's looking like I ought to get a pair for myself. 😱 .....that said, I am looking forward to your experiences Cal.
Eric.
Cross posting going on....anyway...
Cal, ok edit... you can still do power or signal yeah ?...a quick connect/quick change system can be easily implemented using the now almost universal green multi-pin connection standard.
Eric.
Sincere congrats.... seriously,...that thang looks like it ought to go well hard...there have been tv stands doing pretty similar and have worked well....more power from your known good amps running your known good speakers ought to be proper fun when you have it all tuned right.
Cal, ok edit... you can still do power or signal yeah ?...a quick connect/quick change system can be easily implemented using the now almost universal green multi-pin connection standard.
Eric.
I never seem to be amazed. Has anyone just tried something and listened to it and noted if it works? You don't trust yourself that much? I certainly would have quit audio long ago, if I could not trust my own opinions.
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Yes, haven't you been reading? I've reported results, Cal has reported results. Sorry if the results aren't what you want for your buddy, but that's the way it goes sometimes.
Jack could care less. He is tired of making them, anyway, and he can't sign it off to someone else. He doesn't want any more business. Right now he is waiting for his laser wielder person to get back from vacation so he can complete his backlog. I will leave it at that.
AVE...
I'll be brief, because I'm currently bleeding on my keyboard: the quality of what you hear is not only determined by quality of used equipment; it is also determined by your subconsciousness. Perception of anything is related to the knowledge and state of mind. People will hear the difference in sound because they are expecting to hear it. That's why the blind test of QP (and other "sound improvers") is the only way to have measurable results when talking about sound quality. If the QP works, you will hear the difference when it's connected not knowing if it is prior to the listening...
Urgon: John has been quite clear in the past that he can't distinguish these things by ear alone- he needs to know what he's listening to at all times to draw a conclusion. He blames bad switches, test stress, and effects of various malefactors for his inability to distinguish differences without peeking.
You can draw your own conclusions.
You can draw your own conclusions.
Actually SY, it is left brain vs right brain that I believe is the cause of my (or your) 'insensitivity' using double blind listening tests.
AVE...
SY, in that case my conclusion is this (and I don't want to insult anyone): I won't trust any claims made by John Curl on the basis that he is listening to his equipment with wallet, not ears. If one can't hear the difference between two devices without looking at them, then his/hers opinions about sound quality are irrelevant. And this is pointed out by every blind test...
SY, in that case my conclusion is this (and I don't want to insult anyone): I won't trust any claims made by John Curl on the basis that he is listening to his equipment with wallet, not ears. If one can't hear the difference between two devices without looking at them, then his/hers opinions about sound quality are irrelevant. And this is pointed out by every blind test...
Urgon, you don't have to trust me. I do audio design for a living. Personally, I have never paid for a Bybee, but I use them SPARINGLY in my personal audio system. That is all there is to it.
The first time Jack Bybee gave me something to try, I sent it off to a friend of mine for evaluation. She, (a former TAS reviewer) didn't bother and the large blocks became a doorstop at her boyfriend's apartment. Later, I was professionally asked by Parasound for my evaluation. I made every measurement that I could, and I found nothing useful.
But before I came to a FINAL conclusion, I got out my STAX Lambda pro electrostatic headphones, and my favorite vinyl source material. THIS is when I heard the difference, it was subtle but astounding, WHEN everything else was first class: Expensive $2000 MC phono cartridge, Vendetta phono stage, direct to Triode driven Electrostatic headphones. Without this level of setup, it would have not been as obvious, but it was there all right.
So I came into the final listening test presuming that I would NOT hear anything, but I did hear the difference.
When I work at this level, I like to keep track of what I am changing. It does allow that I could make a mistake in thinking that I heard a difference, but it ALSO allows me to easier hear a difference, IF it is subtle, but really exists. That is how I test. You don't have to believe in anything that I say or do, but that is your choice.
The first time Jack Bybee gave me something to try, I sent it off to a friend of mine for evaluation. She, (a former TAS reviewer) didn't bother and the large blocks became a doorstop at her boyfriend's apartment. Later, I was professionally asked by Parasound for my evaluation. I made every measurement that I could, and I found nothing useful.
But before I came to a FINAL conclusion, I got out my STAX Lambda pro electrostatic headphones, and my favorite vinyl source material. THIS is when I heard the difference, it was subtle but astounding, WHEN everything else was first class: Expensive $2000 MC phono cartridge, Vendetta phono stage, direct to Triode driven Electrostatic headphones. Without this level of setup, it would have not been as obvious, but it was there all right.
So I came into the final listening test presuming that I would NOT hear anything, but I did hear the difference.
When I work at this level, I like to keep track of what I am changing. It does allow that I could make a mistake in thinking that I heard a difference, but it ALSO allows me to easier hear a difference, IF it is subtle, but really exists. That is how I test. You don't have to believe in anything that I say or do, but that is your choice.
I don't have an insensitivity problem- not peeking doesn't affect my ears at all. It does, however, let me know the difference between what I think I hear versus what I actually hear.
Regarding Subtle Differences....
The subjects need to do sighted and announced hear, learn and note the differences of two sounds testing first...then subjects are in a better position to blind differentiate the two sounds.
When both sounds are too unfamiliar the stats will get skewed toward nil result....simple.
Eric.
The subjects need to do sighted and announced hear, learn and note the differences of two sounds testing first...then subjects are in a better position to blind differentiate the two sounds.
When both sounds are too unfamiliar the stats will get skewed toward nil result....simple.
Eric.
SY, perhaps you mostly listen with your left brain, many Ph'D's are alleged to have that characteristic. However, I seem to switch over very easily. Don't feel bad, I'm sure your taste buds are more sensitive than mine. '-)
SY,
Lets get one thing clear. I am the guy who blames switches. So far I have not measured one that is as good as many of the components under test. True the levels of distortion under consideration are very low, but I just can't do the tests to see if they are of any possible significance until I find that magic switch that is better than the test subjects.
ES
John has specifically blamed switches. I note that he still uses them in the Blowtorch...
In my ABX box, I use a Cinema Engineering monster- silver coin contacts. Seems to work pretty well. I'll be interested in seeing you publish the details of your switch listening tests.
In my ABX box, I use a Cinema Engineering monster- silver coin contacts. Seems to work pretty well. I'll be interested in seeing you publish the details of your switch listening tests.
Given that I'm a decade younger than you, that's probably true of my ears as well.
AVE...
I'm using recycled isostats from old Unitra audio gear. Works fine for me. Sometimes they require some cleaning, but that's simple to do...
Anyway, for me blaming switches for causing sound go bad is ridiculous. From my experience only while switching or moving around the switch I was able to hear the low quality of contacts...
I'm using recycled isostats from old Unitra audio gear. Works fine for me. Sometimes they require some cleaning, but that's simple to do...
Anyway, for me blaming switches for causing sound go bad is ridiculous. From my experience only while switching or moving around the switch I was able to hear the low quality of contacts...
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