The Corona Wind was Gerald Shirley, whom I met... and saw the original (not functional at the time). I worked at the same place as his son back then, so he took me over to meet him...
_-_-bear
PS. I would love to see the schematic of that amp...?
Scott? Scott Wurcer? The guy whose designs sell more in a day than you've sold in a lifetime?
The irony of this floors me.
Yes, Johnferrier it is that Pattent. It contains other solutions that are aimed to make the amount of bass adjustable and the same time optimising the image. In a nutshell the midrange-treble and bass panel are rotatable against each other so it is modular. One of the drawing i send to the pattent office had a measurement of the phantom image. Imagine a bundeling ELS where you sit on the 90° canceling axis and listen only to the reflexion. I heard about the Iverson speaker but do not know how it worked. There was a report online that Nelson Pass landed in holpital after showing a corona wind wideband on a trade show so Scott you are right. It is a heath hazzard. I heard of the Ostromov Ion speaker that seems to have solved that. The Hill speaker used a cloud of Helium to avoid ozone. i build a version of my phantom source with an ESL panel and people got totally shocked when the heard it. Maybe sometime i will show it in public. The effect is impressive.
I will prepare a little scetch.
I will prepare a little scetch.
Aren't Russell Sherwood and Matthew Bertram carrying on where Mr Iverson left off? Eagle audio is it?
SY, what does that have to do with it? What have YOU sold in the audio industry? If that is what makes one qualified to speak about their colleagues, where is your experience with the making of audio products?
What I am concerned with is the general criticism, without even knowing the person, of people in the audio industry, many of whom I have met and even worked with.
John Iverson was a great circuit designer. I don't say that lightly. However, he WAS eccentric. So was Tesla, and he got much the same treatment, until recent years.
Some people INVENT new ideas, others implement the ideas that have been invented, and work better in corporate culture. I am NOT one of those people, and neither was John Iverson. He worked better, self employed or as a consultant, just like me.
From my experience over decades, excellent circuit design does not take a college degree, but it does take some fundamental instinct as to how circuits work, and this is a rare gift. John Iverson had this gift, and I can count the number of people that I have met in my live experience on one hand with the same ability.
What I am concerned with is the general criticism, without even knowing the person, of people in the audio industry, many of whom I have met and even worked with.
John Iverson was a great circuit designer. I don't say that lightly. However, he WAS eccentric. So was Tesla, and he got much the same treatment, until recent years.
Some people INVENT new ideas, others implement the ideas that have been invented, and work better in corporate culture. I am NOT one of those people, and neither was John Iverson. He worked better, self employed or as a consultant, just like me.
From my experience over decades, excellent circuit design does not take a college degree, but it does take some fundamental instinct as to how circuits work, and this is a rare gift. John Iverson had this gift, and I can count the number of people that I have met in my live experience on one hand with the same ability.
Joachim what was the freq range where this effect can be used? Wouldn't you lose directivity (and beaming) at low freqs?
jd
If you would have known what we knew in those days, you would have slept very lightly, with a suitcase at your side!
In those days, the opinion in NATO was that in order to save Germany, in case the manure hit the ventilator, we would have to destroy it.
People complain about a dangerous world today, but I've never felt so safe in my adult life. YMMV.
I'll stop the /OT now, sorry.
jd
My prototype was a big open baffle ca. 1.4 by 1.4 meter with an ESL panel of ca 40cm by 60cm size and 2 big push-pull woofers per side. I put that on my big ca. 5m by 10m long workbench in my old Sonics factory and fired against a flatt and rigid wall. You had to klimb on that bench to sit there on a chair. I heard NOTHING out of the speakers that where set left and right to the ears in 90°. People got really a kick out of that. Behind the speakers there was also a rigid wall and listened from there, other intesting phenomenons happened. I then went into Source Separation Research and in the end i had 6 dipols playing that could make a stereo signal out of an internet mono radio. I really had to do some electronics in the precedings because i was afffraid to get mad.
SAM = Surface to Air Missile
jd
I know what a SAM is. Were/are they predominantly lauched from land or from Naval Ships.
Just need to know whether I should first focus my attack on naval vessels or the mainland before I send in the bombers.
I know what a SAM is. Were/are they predominantly lauched from land or from Naval Ships.
Just need to know whether I should first focus my attack on naval vessels or the mainland before I send in the bombers.
Sorry missed that question. Land, see below.
jd
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