These are all bona-fide WWII vintage and all suspect parts have been replaced , they have a wonderful vintage sound. Every time I turn them on they work beautifully, one here on the left is an unlabeled secret project (I don't know the details). I'm not showing more than 10% of this stash.
Fas42, if you study gold on gold contacts in a sealed enclosure, it really looks better than mercury. Try Holm as a source.
Fas42, thanks for the link with JA and Enid Lumley. That was Enid all right! The best ears I ever had as a friend. She used to visit Karen and me about once a year, and she would 'adjust' my hi fi to sound its best. She was amazing!
Did she hang the wet towels everywhere, considering that large sheets of cloth can get quite electrostatically charged there might have been something to this.
Fas 42, you might look at the tutorial papers of J.S. Whitley of AMP corp for more, easier to get, info.
No, Enid worked within the parameters of our household. She was AMAZING! She helped to design better audio products.
No, Enid worked within the parameters of our household. She was AMAZING! She helped to design better audio products.
I know exactly what she was working to counter, this is one of the biggest bugbears to knock off. The frustration this has caused over the years has been immense, if not dealt with well this kills the quality like nothing else, for me ...
Frank
Fas42, where Enid lived in LA was a terrible place for static. I used to go to AES conventions there once a year, and I had to hold a key in front of me before I opened a hotel room door. The SF Bay Area doesn't have this problem.
Enid did nothing out of line. She was a 'natural'. However, many here do not appreciate Enid and her perceptions of how to make better audio. Warning is still in effect. '-)
I'm curious whether her "awakening" was a steady process, or an epiphany. For me, it was the latter; after the usual, steady tweaking, one day the sound quality just floored me, it was a revelation! The shades just fell away from my eyes, it was a "I don't believe the sound can get this good!!" moment. Of course, it was highly transitory, shortly after that the quality dropped back to normal and so since then I've been chasing that, the end of the rainbow thing ...
Frank
Frank
John, thanks for all your suggestions of things to look up; looks like another interesting journey ahead ... 🙂
Frank
Yeah, well, you sometimes need that, or in my case a decent sized glass of smooth red, to handle the somewhat rough sound you often have to put up with when checking out other systems ... 🙂
Frank
Anyone have a copy of the original Moncrief article? IM very limited & HE, when such claims are investigated, they are often (always?) the result of wonky procedure .. not Blind etc.
JC's letter has hints of this but we really need to see the original article .. from various 'proofs' that he has posted recently.
That's the beauty of Scientific Method; someone else should be able to repeat your test and get substantially the same result.
______________________
The real issue is whether these wonky contacts would mask the differences between Blowtorch and an evil 4558 device.
But as we are doing ABC rather than ABX, the need for instant switching is lessened though some of my true golden pinnae would appreciate its convenience. As each subject is tested separately, the use of a switch box may be at the request of individual subjects.
We have the technology to get around wonky contacts!
The source is fed via a "hand crafted by virgins from solid Unobtainium" wire wound pot specially selected by JC himself to BOTH Blowtorch and the evil 4558 device. They feed matched Parasound A21s or some other choice device of JC's.
Switching is done by trained monkey ... I mean highly qualified engineer switching the speaker cables.
Anyone care to add important details or suggest how it can be done better?
Jay, you bring up a very important point about the time-scale in which small differences can be detected. Here is one extreme.jay said:
If we brought an evil 4558 device to chez Curl and openly connected it to JC's supa system it is likely his Golden Pinnae friends would take less than 5mins. to declare it sounding terrible compared to Blowtorch. All sighted of course. 😀
JC, in fact would take less than 0 secs. to declare he can hear all sorts of faults .. even without listening.
.. as he has declared there is no need to conduct tests he considers important on HIS designs cos he KNOWS they are FAULTLESS. And if he does conduct eg the Hirata test on Blowtorch, the results must remain secret for secret reasons.
When the curtain is drawn, lights dimmed or other means to make the test Blind are engaged and the contenders are re-allocated to A, B or C, some of the Golden Pinnae will indeed take less than 5min to declare they have positively identified Blowtorch from its superlative qualities compared to evil 4558.
But 5min is far too short a timescale to pick up differences of this sort regardless of the prowess the Golden Pinnae believe they possess. Here, in an attempt to prevent these worthy people from shooting themselves in the foot and making utter fools of themselves, I always insist they go through the protocol of the test which includes
- at least 5 pieces of music OF THE SUBJECTS CHOICE
- which must include at least one each of
- simple voice(s)
- complex
- complex with voice(s)
- soft
- loud
- he spend at least 30min comparing the 3 contenders
Remember, the aim of the exercise is actually ...
kindhornman said:
On a test of electronics like Blowtorch vs evil 4558, my true golden pinnae would probably take between 30min & an hour to establish a difference and up to half a day to select a preference.
But this isn't the important time-scale. Let assume that this hypothetical test has 2 of A, B or C assigned to Blowtorch and the other to evil 4558. I expect a true golden pinnae to say he "likes one and prefers it to the other 2 which are similar" (though he probably won't say they are the same) BTW, he is NEVER told that 2 presentations are the same. He has to assume even the possibility that all three are the same. [*]
The chances of this result being pure chance are 1/3. For greater statistical significance, we would have to test him another 2x making 3 tests in all .. each of which may take 1/2 a day. The assignments of A, B & C may be changed between the tests. If he produces, the same result on all three, it is highly likely he isn't deaf and his opinion is worth listening to.
The 1/2 day time limit is based simply on the performance of my true golden pinnae, logistics & cost. I make the possibly false assumption that people who take longer are probably not worth listening too.
I believe this sets a practical upper limit to the time-scale.
[*]Of course if he assigns very different descriptions to the 2 presentations of Blowtorch, he is spared further testing.
_______________________
I'm sorry to hear that JC. I take it you would have proposed her as competent to ensure Blowtorch performs at it's best and also as a true golden pinnae if you were to lend your spare Blowtorch to us. 😡john curl said:
_______________________
Because some Blind ABX tests often come up with NULL results doesn't mean Blind Tests cannot be refined to improve their resolution. I've spent much of my previous life attempting this with some success.
I certainly don't find it
and have in fact done a lot to demonstrate this .. but in controlled tests which can be repeated by anyone versed in the art.jay said:
More listening tests please instead of
- Status
- Not open for further replies.