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Old 21st June 2012, 06:33 PM   #24041
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Quote:
Originally Posted by 1audio View Post
TeraHertz VNA? That's impressive. And even ADI only rents the stuff. Does anyone actually buy it?

At the time I think it was over $200,000, we frequently rent things like 22G BERT's since some are over $300K each. Yes, Corning for one buys this stuff to qualify long haul fiber, etc. I haven't seen it but someone here said they have a complete 140G lab setup that spares no expense.
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Old 21st June 2012, 07:33 PM   #24042
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Originally Posted by 1audio View Post
TeraHertz VNA? That's impressive. And even ADI only rents the stuff. Does anyone actually buy it?
Then there was the fellow who figured he would put that kind of stuff into his annual budget, so when he got only part of it, he could still buy everything he really wanted. Well the budget went through without any cuts. After 2 years even his boss figured out he hadn't even opened the boxes! He went and the gear went to a surplus sale. They got almost 3% of the purchase price!
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Old 21st June 2012, 09:08 PM   #24043
SY is offline SY  United States
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Quote:
Originally Posted by john curl View Post
Maybe he could start a new business, and supply quality demos. It would be a service to the audiophile community...
Not interested in a business. I give them away for free, with the musicians' permission. At least one very high end company is using them for demos, you're certainly welcome to.
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Old 21st June 2012, 10:02 PM   #24044
gpapag is offline gpapag  Greece
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Quote:
Originally Posted by jacco vermeulen View Post
Ah, that's what it is ?
You've been reading the brochure ?
Decorating an already fetishistic (*) piece of equipment is indicative of the way they think (Kitsch).

On the commercial part of it, the “return” of the open reels (used equipment) will generate a lot of money. Only the restoration/repair of the transport mechanism, replacement of parts, alignment and testing, promises a business with a very high profit margin, for they are few that know how to do it properly. Good for them.

A wealthy customer (**) will not be hurt by the milking of some thousands from his wallet. He will pay for having the equipment delivered and connected, he will have a precious tape correctly rooted through the capstans and heads, he will have been shown which knobs to press for the miracle to start. The tape will last for the whole social meeting.
Someone will ask there: “Where did you get it?” The answer will be: “20 grands from XX. They custom rebuilt it for me. And I had to wait for 3 months”.
The one that asked the question, will gladly pay 40 to the same XX for another piece, custom decorated of course, set-up and delivered for his -next week-social meeting. He will expect to be asked the same kind of question.

That’s life, but what all this has to do with diy?

If one here has an open reel, he knows very well what it is capable of, despite all it’s technical (mechanical) shortcomings. Just like vinyl TT.(***)

Master tapes? Well, how many are available, at what price and of which musical content? Just like vinyl reference recordings.

R2R for live recordings? Yes and no. The majority of practitioners have started with open reels. Some continue to do so, some use it in parallel with A/D recording, some have abandoned using R2R altogether.

Magnetic tape (beneficial?)compression?
High freq. extension?
30ips?
Diy?

Why not turn to home video recorders?
Magnetic tape compression, High freq. extension, rotating heads, much less mechanical issues.
Take off the electronics you don’t like and stuff it with your own good guts.(****)




Quote:
Originally Posted by scott wurcer View Post
We have these capabilities but usually you need an expert driver for the tools. Garbage in garbage out. Our modeling folks are now supporting us at up to 50G with some amazing fits to the data. I think they rented a 90G network analyser at the time to verify, I think there are 1050G ones now.
Sure you do.
But I was expecting some response on the highlighted phrases (lack of displacement current terms and wave behavior).

George


(*)Size, shape and positioning of the reels

(**)Not the case of vinyl or tape collectors who listen to their collection.
I have yet to meet one that is sitting unconfortably in his chair when thinking of his playback (good but not top)equipment. I would like to hear of your experience with serious music collectors.

(***)It becomes a bit of irony that in both cases –vinyl and tape- most (both in number and severity) of the technical problems are of mechanical origin. Yet the focus is on the electronics side.

(****)But whatever can be done, a VCR will never become the wonder of the evening. And a video cassette has it’s bobins smaller and well hidden.
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Old 21st June 2012, 10:23 PM   #24045
brianco is offline brianco  Ireland
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[QUOTE=gpapag;3067922]

..........................................
(**)Not the case of vinyl or tape collectors who listen to their collection.
I have yet to meet one that is sitting unconfortably in his chair when thinking of his playback (good but not top)equipment. I would like to hear of your experience with serious music collectors...........................[QUOTE]


An older "audiophile" died. His estate included a very large collection of albums and his TT based system was at the highest level of cost. When his widow asked a serious music friend to catalog the collection, it was found that the 'collection' was chosen almost entirely for the attractiveness of the female models/performers illustrated on the covers!! There were less than a couple of dozen records lacking such covers.....and they were of typical singalong crooners.

I am not suggesting that many collectors fall in this category!
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Old 21st June 2012, 10:30 PM   #24046
1audio is online now 1audio  United States
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Quote:
Originally Posted by scott wurcer View Post
At the time I think it was over $200,000, we frequently rent things like 22G BERT's since some are over $300K each. Yes, Corning for one buys this stuff to qualify long haul fiber, etc. I haven't seen it but someone here said they have a complete 140G lab setup that spares no expense.
I thought you said (and meant) 1040G.

In my world it seems the sales guys can buy the good stuff (we have a 7Gb Bert and Tek DSA that spend more time on the road in front of stereo sales guys than in the lab). Engineering must make do with whatever they can squeak out.
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Old 21st June 2012, 11:50 PM   #24047
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For completeness: The entire repro circuit for a 30 ips analog recorder.
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Old 22nd June 2012, 12:47 AM   #24048
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Quote:
Originally Posted by 1audio View Post
I thought you said (and meant) 1040G.

In my world it seems the sales guys can buy the good stuff (we have a 7Gb Bert and Tek DSA that spend more time on the road in front of stereo sales guys than in the lab). Engineering must make do with whatever they can squeak out.
Aglient lists a 1050G network analyzer (extension on a 110G one actually) no price which probably means made to order. Just a comment on the most extreme stuff around. There are several instruments that we have been unable to rent because there are none made without someone paying the full price.
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Old 22nd June 2012, 12:49 AM   #24049
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[QUOTE=brianco;3067940][QUOTE=gpapag;3067922]

..........................................
(**)Not the case of vinyl or tape collectors who listen to their collection.
I have yet to meet one that is sitting unconfortably in his chair when thinking of his playback (good but not top)equipment. I would like to hear of your experience with serious music collectors...........................
Quote:


An older "audiophile" died. His estate included a very large collection of albums and his TT based system was at the highest level of cost. When his widow asked a serious music friend to catalog the collection, it was found that the 'collection' was chosen almost entirely for the attractiveness of the female models/performers illustrated on the covers!! There were less than a couple of dozen records lacking such covers.....and they were of typical singalong crooners.

I am not suggesting that many collectors fall in this category!
Remember the Volkswagen hubcap cover on the Ring cycle?
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Last edited by scott wurcer; 22nd June 2012 at 12:53 AM.
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Old 22nd June 2012, 02:58 AM   #24050
bcarso is offline bcarso  United States
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[QUOTE=scott wurcer;3068069][QUOTE=brianco;3067940]
Quote:
Originally Posted by gpapag View Post

..........................................
(**)Not the case of vinyl or tape collectors who listen to their collection.
I have yet to meet one that is sitting unconfortably in his chair when thinking of his playback (good but not top)equipment. I would like to hear of your experience with serious music collectors...........................

Remember the Volkswagen hubcap cover on the Ring cycle?
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