Well, if you buy an intense wine, what else can one expect? A typical red in Australia is not like that, is about 1/5th the price. A decent Merlot, for a quick meal out, can be got for 1/20th the price ...
I may have blabbed too much about my approach. Oh well, snooze and lose. They will probably still screw it up. And as Keynes said, In the long run we are all dead.
But at least I have some documentation about priority.
There are spectacular deals on motor oil WAIT I was thinking of the other thread.
But seriously---I am drinking an Italian non-vintage red right now, 12.5% (non-Parkerized) and an unidentified mix of varietals that is really quite outstanding. Ocarossa "Cuvee Rosso" (well it is red alright). Astonishing value. It's firing on all cylinders WAIT wrong thread again. Five bucks, plus tax. Gotta get more.
Keynes did IMO enormous damage. But he was a bright guy. But this is veering too close to politics. And I am listening to Stan Getz and Kenny Barron, the 7 CD People Time sets, which Trumps (oooops there I go again) damn near everything.
What was the litany quoted by iirc Dan Sheingold in a very early Analog Dialogue: The Hall effect is a small effect ( in connection with the difficulty of using it to make analog multipliers)?Hmmmm , how could we apply "beer cooler tech" to our audio ?
Oh well , time to glue some hall effect sensors onto my loudspeakers ,
while I mull over the last question. (I'll "reckon" it all out).
OS
Being cool is great, at least for majority carrier devices, until you get carrier freezeout (for silicon JFETs somewhere around 100 Kelvin is optimal).
Cool the voice coil.....or even better, supercool itHmmmm , how could we apply "beer cooler tech" to our audio ?
For current drive, closer to zero resistance the better. But don't try this with voltage drive - (distant sound of 'phut'.......)......
A lot of countries are getting their acts together these days - as an example of excellent value for money our way, there's this fellow, https://www.danmurphys.com.au/product/DM_350029/jamiesons-run-billy-s-shadow-cabernet-sauvignon. Remarkable depth of character, I got a shock when I found out its price.
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Content? from America? Little chance that will change in our life time..... But, for really great stories and unique ways to tell them... great (real) photography, etc The foreign films get my attention. Streaming HD Netflix most of the time. Dropped cable to basic.
-RM
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MEMS accelerometers?
Some are with analog and some with digital out. Two-three axis and some with an enormous 22kHz bandwidth
Wait for this
"Characterization of a sensor showed a giant ME coefficient of 2390 (V/m)/(A/m) and a corresponding sensitivity of 3800 V/T in resonance at 7.1 kHz. A minimum resolution of 30 pT and noise levels as low as 27 pT/Hz1/2 have been reached in resonant operation." (Fraunhofer Institute for Silicon Technology in Itzehoe).
George
Attachments
Slightly OT:
Found an article by Bode, from 1940, and the abstract shows that Mr. Bode had a nice sense of humour/reality, as well as excellent command of the language, witness:
"THE engineer who embarks upon the design of a feedback amplifier must be a creature of mixed emotions. On the one hand, he can rejoice in the improvements in the characteristics of the structure which feedback promises to secure him. On the other hand, he knows that unless he can finally adjust the phase and attenuation characteristics around the feedback loop so the amplifier will not spontaneously burst into uncontrollable singing, none of these advantages can actually be realized. The emotional situation is much like that of an impecunious young man who has impetuously invited the lady of his heart to see a play, unmindful, for the moment, of the limitations of the $2.65 in his pockets. The rapturous comments of the girl on the way to the theater would be very pleasant if they were not shadowed by his private speculation about the cost of the tickets."
Jan
Found an article by Bode, from 1940, and the abstract shows that Mr. Bode had a nice sense of humour/reality, as well as excellent command of the language, witness:
"THE engineer who embarks upon the design of a feedback amplifier must be a creature of mixed emotions. On the one hand, he can rejoice in the improvements in the characteristics of the structure which feedback promises to secure him. On the other hand, he knows that unless he can finally adjust the phase and attenuation characteristics around the feedback loop so the amplifier will not spontaneously burst into uncontrollable singing, none of these advantages can actually be realized. The emotional situation is much like that of an impecunious young man who has impetuously invited the lady of his heart to see a play, unmindful, for the moment, of the limitations of the $2.65 in his pockets. The rapturous comments of the girl on the way to the theater would be very pleasant if they were not shadowed by his private speculation about the cost of the tickets."
Jan
Just a note in real pro loudspeakers voice coils are cooled. JBL uses what they call vented gap technology or in simple terms slits in the magnet structure to allow more air movement. Community Sound has even used fan cooling. Of course better thermal conduction is one of the benefits of ferro-fluid. Then there are the patents on using alloys that don't have a positive resistance coefficient.
Of course there are also the decorative fins on the magnet structure of some transducers.
ES
Of course there are also the decorative fins on the magnet structure of some transducers.
ES
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