Didden interview
Tips!
Jan Didden has done a very nice interview with the audio engineer Erno Borbely a very interesting interview, you can go to Ernos site, the site also have a link to an american audio builder who is using Ernos products.
Kamskoma
Tips!
Jan Didden has done a very nice interview with the audio engineer Erno Borbely a very interesting interview, you can go to Ernos site, the site also have a link to an american audio builder who is using Ernos products.
Kamskoma
kamskoma said:
Ah, prime time for strapping Mr Curl in a chair and tickle his feet till he starts talking VR3.
In the meantime, new-combers to the greatest show on earth can eyeball the official Scrapbook
(even after half a mill pages, Mr Curl hasn't yet commented why the structural rigidity of the amp case is part of the trick)
Hi PMA?
Controlled crosstalk with good effect:
From
http://www.richardbrice.net/ppm.htm
"[...] So that, when two-loudspeakers reproduce a stereo image from a standard stereo CD for example, the high frequency components of each instrument or voice emanate from one place within the stereo image and the low-frequency components emanate from nearly - but not quite - the same place. The result, to use a visual analogy, is a slight smearing or blurring of the stereo image. [...]"
Here is the simple circuit Richard Brice proposed to cure this blurring effect. It was published in his book
http://www.amazon.fr/Multimedia-Virtual-Reality-Engineering-Richard/dp/0750629878
It is permanenly switched on in my sytem.
Controlled crosstalk with good effect:
From
http://www.richardbrice.net/ppm.htm
"[...] So that, when two-loudspeakers reproduce a stereo image from a standard stereo CD for example, the high frequency components of each instrument or voice emanate from one place within the stereo image and the low-frequency components emanate from nearly - but not quite - the same place. The result, to use a visual analogy, is a slight smearing or blurring of the stereo image. [...]"
Here is the simple circuit Richard Brice proposed to cure this blurring effect. It was published in his book
http://www.amazon.fr/Multimedia-Virtual-Reality-Engineering-Richard/dp/0750629878
It is permanenly switched on in my sytem.
Attachments
jacco vermeulen said:
From memory, JC refereed few times to the structure of the case.
One point is RFI shielding.
Second point is the air tight structure. Air flow may modulate the input JFETs.
SY said:
OK, so this will show whether there are detail lost, very mysterious.
Well for claimed 200W monoblocks at normal listening levels, I would not think that to be a problem, especially when the second amp was 160W. Are you listening to music, on other people's systems, with SPL meters and a calibrated spectrum analyzer connected?
Yes' I've noticed a few correlating measurements, I guess some of them will be very controversial from a scientist's viewpoint. Then, unfortunately there are a few that I don't have a clue how to measure for, luckilly it is easy to do a listening test.
janneman said:
The SPL matching theory, it is very overrated. A good system will sound good at any reasonable volume, a bad system will sound good only at one volume. 😀
Joshua_G said:
Wrong, ever heard how good a bad system sound when the volume is turned down completely?
😀 😀 😀
Andre Visser said:
It should be possible to back up your reports with other reports.
If you invited other skilled listeners to your home and they had a choice between two amps or two cables that you know sound different in one particular aspect such as sound stage focus, they should be able to confirm your reports.
The test can be sighted, but you should be absent while they are introduced to the equipment and whilst they swap and listen. They are only told that eg "one of these has a defocussed sound stage, just identify it."
alansawyer said:
Ever notice a blind person seems to hear things others don't?
It's not that their ears suddenly improve ten fold.
It's that they learn to notice the sounds that most of us don't.
So it it with some audiofiles.
They don't have better hearing, they've just learned to notice sounds others ignore.
myhrrhleine said:
Indeed.
Also, it seems to me that the time I worked as a recording 'engineer' have its' effect on training my ears to note subtle nuances.
fredex said:
That is a method I've used quite a lot, mostly I would not say anything and let a friend describe to me what he hear.
myhrrhleine said:
Very true, I've seen a program on TV showing a few blind guys riding their bicycles, making clicking sounds with their tongue while listening to the echo's to avoid obstacles.
janneman said:
Only that one of the most spooky stereo imaging I've heard came from a Gretz cassette portable with detactable open back single drivers sitting each side of the mantle piece. Those Germans knew what they were doing...............my ears were real good then.
🙂
Andre Visser said:
The louder the system, the wider the soundstage and the more spacious it sounds. Spaciousness depends on the audibility of the reflections in the sound which are of much less amplitude. Increase the level, and more and more reflections rise above the audibility threshold. Simple.
Jan Didden
fredex said:
You don't know that "two cables that you know sound different in one particular aspect". That's the crux. You want to do a test to find out.
Such a test you describe would be completely worthless, of course. A step forward would be to say: "I have two cables. Do you think they sound different or not?". But just a step, there's still a long way to go before such a test would be accepted by serious investigators.
Jan Didden
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