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#1
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Teflon Film Tin Foil capacitors
Hi RATs!
http://v-cap.com/tefloncapacitors.html never mind the mumbo-jumbo deluxe chatter: These things sound better than her saying this is your lucky night ... sell your Mother down the river and get what you really need: some new capacitors. Happy Ears! Al Marcy PS These sound too good for some people. You know who you are ... |
#2
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Teflon Film Tin Foil capacitors
No capacitors sounds as good as no capacitor. It's ALWAYS possible to
modify a circuit to make it fully DC-coupled. wrote in news:1153465184.529998.299200 @i42g2000cwa.googlegroups.com: Hi RATs! http://v-cap.com/tefloncapacitors.html never mind the mumbo-jumbo deluxe chatter: These things sound better than her saying this is your lucky night ... sell your Mother down the river and get what you really need: some new capacitors. Happy Ears! Al Marcy PS These sound too good for some people. You know who you are ... |
#4
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Teflon Film Tin Foil capacitors
wrote in message
oups.com... Hi RATs! http://v-cap.com/tefloncapacitors.html never mind the mumbo-jumbo deluxe chatter: These things sound better than her saying this is your lucky night ... sell your Mother down the river and get what you really need: some new capacitors. I have wanted to try a pair because everybody who has raves about them. However, I can't get past the prices. Can someone explain to me why the price goes up so significantly as the cap value increases? For example: a ..10uf costs $49.99 and a .47uf costs $139.99. Thanks. Gerry |
#5
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Teflon Film Tin Foil capacitors
GerryE123 wrote: I have wanted to try a pair because everybody who has raves about them. However, I can't get past the prices. Can someone explain to me why the price goes up so significantly as the cap value increases? For example: a .10uf costs $49.99 and a .47uf costs $139.99. Thanks. Gerry All the extra smoke and mirrors that need to be stuffed inside the cap... 4.7 x as many. Peter Wieck Wyncote, PA |
#6
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Teflon Film Tin Foil capacitors
Al wrote
Hi RATs! http://v-cap.com/tefloncapacitors.html never mind the mumbo-jumbo deluxe chatter: These things sound better than her saying this is your lucky night ... sell your Mother down the river and get what you really need: some new capacitors. Hi Al, Missed your updates. What else is in your circuit these days? cheers, Ian |
#7
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Teflon Film Tin Foil capacitors
GerryE123 wrote
...Can someone explain to me why the price goes up so significantly as the cap value increases? For example: a .10uf costs $49.99 and a .47uf costs $139.99... Nearly 5 times the ufs for less than 3 times the price... what a bargain. Manufacturing time per uf must reduce as size increases. Possibly due to set-up or other dead time per cap. cheers, Ian |
#8
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Teflon Film Tin Foil capacitors
"Ian Iveson" said:
...Can someone explain to me why the price goes up so significantly as the cap value increases? For example: a .10uf costs $49.99 and a .47uf costs $139.99... Nearly 5 times the ufs for less than 3 times the price... what a bargain. Uhm....yep ;-) Manufacturing time per uf must reduce as size increases. Possibly due to set-up or other dead time per cap. Simple, really. It takes more naked Balinese virgins to make larger caps at midnight and full moon, as naked Balinese virgins are the only ones who dare touch the fragile silver foil that is gained from an unknow Peruvian silver mine. Any other being touching the foil, as well as any other time than midnight with full moon would ruin the soundstage. A silver mine, mind you, that was supposed to be dried up since the time of the Conquistadores. Imagine the difficulties in exploiting this mine, and the near impossibility to smuggle the pure silver out of Peru and into Bali.......... Yep, these are definitely a bargain. Get them now, before stock is exhausted! My pile of Mundorfs suddenly became worth nothing, I guess I'll just have to use them in my amps, instead of keeping them as a future investment. ( Hi Al, this is all tongue in cheek, in case you don't remember me!) -- "All amps sound alike, but some sound more alike than others". |
#9
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Teflon Film Tin Foil capacitors
Hi RATs!
Oh, um, yes, I have some bananas ... I had not posted for a year or so. Time flies when you get lost in the instant future Internet Waltz Now using Google Groupies - seems much too cool for an old geek like me. Now Playing in the Audio Dungeon: 80 Hz ehorns with Lambda 15" "Get Out of Khrma Free" and 4.25 mH choke. Sony 400 DVD changer - factory stock, except for the weird discs in the rack. KEF Coda 9.2 Ubid specials. Basically, New Old Stock. Cartons are a bit weathered, but the music is quite something. These cost less than the new caps Amp is Ella, from diyhifisupply.com in Hong Kong. I have changed the tubes. I converted it to triode mode. I snipped the NFB loop. I put an SS diode between each output plate and screen stopper. Cathode toward screen. Then, yesterday, the tftf caps arrived in their silk and mink shipping booties and I soldered them in after snipping the 0.22uF Obbligato Copper out of the circuit. I awoke to Music a bit louder than usual. I think the new caps are breaking in, or the Music is beaking out ... Still sound OK ... Happy Ears! Al PS OK, OK, not really silk and mink booties, just wrapped in sticky bubble wrap in a big box of foam pellets ... Ian Iveson wrote: Hi Al, Missed your updates. What else is in your circuit these days? cheers, Ian |
#10
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Teflon Film Tin Foil capacitors
Hi RATs!
Mom was a hottie ... she was cremated a few years back Why does spending the equivalent of a carton of cigarettes on a really good sounding capacitor become an unholy expense which needs to be guffawed as a crime against humanity by so many? How much money are you planning on taking with you when you die? My kid finished college, so, now I can finish the projects I started in when I was in college. I know, I could send your kid to college, but, then my kid would have to fight him for a job. Sorry. Besides, these caps sound really good ... *really* something, as Rev C. put it. Prices are only exciting once. Quality feels good as long as you can perceive it. Happy Ears! Al Jon Yaeger wrote: Hi Al, Your mother had better be a real hottie to fetch the prices needed for these caps. Say, I thought you'd be the very last one to advocate super-expensive parts. Do they really make your ears that happy? Jon |
#11
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Teflon Film Tin Foil capacitors
GerryE123 wrote: wrote in message oups.com... Hi RATs! http://v-cap.com/tefloncapacitors.html never mind the mumbo-jumbo deluxe chatter: These things sound better than her saying this is your lucky night ... sell your Mother down the river and get what you really need: some new capacitors. I have wanted to try a pair because everybody who has raves about them. However, I can't get past the prices. Can someone explain to me why the price goes up so significantly as the cap value increases? For example: a .10uf costs $49.99 and a .47uf costs $139.99. Thanks. So they can make even more money ripping you off mainly. Graham |
#12
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Teflon Film Tin Foil capacitors
" wrote: Hi RATs! Mom was a hottie ... she was cremated a few years back Why does spending the equivalent of a carton of cigarettes on a really good sounding capacitor become an unholy expense which needs to be guffawed as a crime against humanity by so many? Because all film capacitors sound the same. The only difference is marketing ********. And purchasers' gullibility. Graham |
#13
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Teflon Film Tin Foil capacitors
" wrote: Hi RATs! Mom was a hottie ... she was cremated a few years back Why does spending the equivalent of a carton of cigarettes on a really good sounding capacitor become an unholy expense which needs to be guffawed as a crime against humanity by so many? Why do ppl buy girls' soiled knickers too ? That's what I'd like to know ! Graham |
#14
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Teflon Film Tin Foil capacitors
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#15
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Teflon Film Tin Foil capacitors
" wrote: wrote: Why does spending the equivalent of a carton of cigarettes on a really good sounding capacitor become an unholy expense which needs to be guffawed as a crime against humanity by so many? Al: I think you answered your own question using the Cigarette Analogy. Film caps are film caps are film caps.... The rest is smoke, mirrors and profit. LOTS of profit. No crime in it, but the fools are not the producers of these goods. In any case, you are entitled to do as you see fit. There are those who purchase expensive Vodka when the entire point of that particular alcohol delivery system is that it has no taste at all. After a certain level of quality (no keytones, contaminants, residual oils or chemicals), the rest is.... well... profit. Well......... You say that about vodka but I can taste a difference. The best I've ever had was http://www.wyborowa.com/ from Poland It has a truly smooth flavour - not chemical at all like Smirnoff for example. It's actually nice to drink neat and very well chilled. Graham |
#16
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Teflon Film Tin Foil capacitors
Hi RATs!
OK, since all wise men know everything in Audio is BS, then anybody who thinks they hear something is crazy. Fair enough. And since all wise men know Vodka cannot have any beneficial effect on your palate, by Law!, it is all BS, too. Good thinking. And Music only sounds good if you think about it properly, just like you do. Sure. That line of reasoning is elegant in its simplicity Now, please explain why we have to ask you what we may or may not hear? Is it because nobody ever can have any fun unless you say so? Great plan. Good luck. If you are the only non-fool, we are mostly fools, so only you know anything useful. I don't mind. Why do you think I care if you do? Happy Ears! Al wrote: Film caps are film caps are film caps.... The rest is smoke, mirrors and profit. LOTS of profit. No crime in it, but the fools are not the producers of these goods. In any case, you are entitled to do as you see fit. There are those who purchase expensive Vodka when the entire point of that particular alcohol delivery system is that it has no taste at all. After a certain level of quality (no keytones, contaminants, residual oils or chemicals), the rest is.... well... profit. Peter Wieck Wyncote, PA |
#17
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Teflon Film Tin Foil capacitors
" wrote: Hi RATs! OK, since all wise men know everything in Audio is BS, then anybody who thinks they hear something is crazy. Fair enough. You may be hearing 'something' but you've been brainwashed into thinking it's about some nebulous unspecified kind of 'quality' All capacitors have a tolerance on their value for instance. For film caps used in audio are typically +- 5 or 10% So, a 0.47uF cap may actually be 0.43 or 0.52 uF, worse still for 20% tolerance part. If it's used in an appication that's particularly value sensitive like a filter stage there will indeed be obvious differences in performance ( frequency response most obviously ) that are easily measured such as turnover frequency and slope. Of couse the uneducated hear a difference and jump to the conclusion that their shiny new capacitor is *better*, because they know no better and of course because that's what they've been told to think. And since all wise men know Vodka cannot have any beneficial effect on your palate, by Law!, it is all BS, too. Good thinking. And Music only sounds good if you think about it properly, just like you do. Music can also sound better under the influence of certain substances, proving beyond doubt that all human perception is subjective and fallible on a day to day basis. Sure. That line of reasoning is elegant in its simplicity Now, please explain why we have to ask you what we may or may not hear? Because you might be interested in the underlying science - which I can assure you is the most effective way to first-class reproduction rather than Silly Billy fiddling with components maybe ? Is it because nobody ever can have any fun unless you say so? Great plan. Good luck. If you are the only non-fool, we are mostly fools, so only you know anything useful. I don't mind. Why do you think I care if you do? If you're happy being a gullible fool, more power to you ! Spend more on those magic components ! Graham Pro-audio designer ( that's the stuff that *makes* the recordings you listen to btw ) for 30 years |
#18
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Teflon Film Tin Foil capacitors
Eeyore wrote: Because you might be interested in the underlying science - which I can assure you is the most effective way to first-class reproduction rather than Silly Billy fiddling with components maybe ? Well, a reproduction system is just a bunch of parts. If none of the parts have any effect on the sound, what can Lying Science, under, over or parallel, do for us? It all must sound the same ... at least to honest, educated people. Happy Ears! Al |
#19
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Teflon Film Tin Foil capacitors
" wrote: Eeyore wrote: Because you might be interested in the underlying science - which I can assure you is the most effective way to first-class reproduction rather than Silly Billy fiddling with components maybe ? Well, a reproduction system is just a bunch of parts. If none of the parts have any effect on the sound, what can Lying Science Your disinterest in what actually makes stuff work marks you out as a clot. , under, over or parallel, do for us? It all must sound the same ... at least to honest, educated people. Uh ? Who said it would all sound the same. I know it doesn't. I also know most of the reasons why. Graham |
#20
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Teflon Film Tin Foil capacitors
snip
Well......... You say that about vodka but I can taste a difference. The best I've ever had was http://www.wyborowa.com/ from Poland It has a truly smooth flavour - not chemical at all like Smirnoff for example. It's actually nice to drink neat and very well chilled. Graham Chopin is very good as well. Both potato vodkas. Maybe that's the key. RK |
#21
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Teflon Film Tin Foil capacitors
Hi Graham,
You live where stuff works in spite of all the wretched parts. Fine. Enjoy yourself. I live where things work as a system. No part of any working system is inert. You are clearly inert. Therefore, you are not part of a working system. What you think of as good sound is not interesting to me. I doubt it is to you, either. Thank you for expressing yourself as best you can. Don't worry, your secrets of great electrical engineering are stone safe from my prying mind. Forever and ever. Happy Ears! Al Eeyore wrote: Your disinterest in what actually makes stuff work marks you out as a clot. Uh ? Who said it would all sound the same. I know it doesn't. I also know most of the reasons why. Graham |
#22
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Teflon Film Tin Foil capacitors
Raymond Koonce wrote: snip Well......... You say that about vodka but I can taste a difference. The best I've ever had was http://www.wyborowa.com/ from Poland It has a truly smooth flavour - not chemical at all like Smirnoff for example. It's actually nice to drink neat and very well chilled. Graham Chopin is very good as well. Both potato vodkas. Maybe that's the key. RK Possibly so. It's the stuff that *isn't* alcohol that gives it the flavour. I also once bought a really cheap vodka that tasted decent too. It had probably never ever been near a proper ditillery but seemed to have been concocted in a lab more likely. That too contained some kind of 'vegetable flavouring'. Graham |
#23
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Teflon Film Tin Foil capacitors
" wrote: Hi Graham, You live where stuff works in spite of all the wretched parts. Fine. Enjoy yourself. I live where things work as a system. No part of any working system is inert. Everything is a system. Assigning magic properties to inanimate objects like capacitors is just plain retarded though. You are a testament to the failures of modern education. Btw - has it never crossed your mind that (a) I care about quality sound too and (b) I might actually know what I'm talking about ? A capacitor is simply defined by the laws of physics. Those can take account of material properties too. If OTOH you prefer magic to science, good luck to you - shame about your wallet ! Graham |
#24
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Teflon Film Tin Foil capacitors
Hi Eyesore,
Not everything is a system. Much of what is purported to be conversation is just a racket. As in, unscrupulous activity. You think you know the True Path to Fine Sound. Great. Every jerkoff thinks he is the world's greatest lover. Whatever keeps your ass from freezing to the toilet seat is Hot ****. Capacitors are not Magic. Neither is your asshole. Just little machineries in a big Universe. I like the sound of mine. The sounds you type are putrid pretense. You have no value. Please spare me further exposure to your fine UK education. I am old and sick and not partial to self-important pukes. Happy Ears! Al Eeyore wrote: Everything is a system. Assigning magic properties to inanimate objects like capacitors is just plain retarded though. You are a testament to the failures of modern education. Btw - has it never crossed your mind that (a) I care about quality sound too and (b) I might actually know what I'm talking about ? A capacitor is simply defined by the laws of physics. Those can take account of material properties too. If OTOH you prefer magic to science, good luck to you - shame about your wallet ! Graham |
#25
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Teflon Film Tin Foil capacitors
" wrote: Hi Eyesore, Not everything is a system. Much of what is purported to be conversation is just a racket. As in, unscrupulous activity. You think you know the True Path to Fine Sound. Great. Every jerkoff thinks he is the world's greatest lover. Whatever keeps your ass from freezing to the toilet seat is Hot ****. Capacitors are not Magic. Neither is your asshole. Just little machineries in a big Universe. I like the sound of mine. The sounds you type are putrid pretense. You have no value. Please spare me further exposure to your fine UK education. I am old and sick and not partial to self-important pukes. You're also an idiot. Graham |
#26
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Teflon Film Tin Foil capacitors
Sander deWaal wrote in
: Simple, really. It takes more naked Balinese virgins to make larger caps at midnight and full moon, as naked Balinese virgins are the only ones who dare touch the fragile silver foil that is gained from an unknow Peruvian silver mine. Any other being touching the foil, as well as any other time than midnight with full moon would ruin the soundstage. LOL! |
#27
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Teflon Film Tin Foil capacitors
http://v-cap.com/tefloncapacitors.html ** Err - does " tin foil " = aluminium foil, here ?? ....... Phil |
#28
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Teflon Film Tin Foil capacitors
wrote: Hi RATs! http://v-cap.com/tefloncapacitors.html never mind the mumbo-jumbo deluxe chatter: These things sound better than her saying this is your lucky night ... sell your Mother down the river and get what you really need: some new capacitors. Happy Ears! Al Marcy PS These sound too good for some people. You know who you are ... Yeah, I get these dudes saying this and that cap sounds the best, they say they like teflon, then they move to oilers, film this that then foilers and then finally Auricaps and Hovelands and Jensen et all and they don't ever keep an identical system with reference caps to see if the cap change was worth all the expense and soldering. Whener I have changed a capacitor I have heard nothing different, and was unable to get a reliable preference made by a customer more than random 50% chance would predict; Ie, I ask someone to identify which channel has cap X or Y and nobody chooses correctly better than 50% of choices. But nevertheless, if directed, I will solder in whatever caps ppl want. I just cannot see what the heck is so special about teflon, except that its great in frying pans. But Hi Al!!! you have been missing for a long time you old son of a gun! And my mother is priceless. The world's least said sentence:- "Just you come over here sonny, these fancy caps are cheap." The world's second least said sentence:- "Jus youse lie down here luvvy, it won't costyer anyfink". Patrick Turner. |
#29
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Teflon Film Tin Foil capacitors
Patrick Turner wrote in
: teflon, then they move to oilers I don't get the oil thing at all, seems inconsistent to me -- oil has a high dielectric constant, just the opposite of what the reasoning for using Teflon seems to be (and of course the dielectric constant of polypropylene is even lower than Teflon). The only thing that makes sense is that foil would be better than film, for the same reason Vishay makes metal foil resistors along their metal film line (they have a white paper explaining why it matters, to what extent it's just marketing I can't judge). |
#30
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Teflon Film Tin Foil capacitors
??? Tin is a completely different element from aluminum.
Makes for a great non-stick coating on the nice thick pure-copper French cookware you can buy. It's the one good thing to come out of france, besides the recipes. There's even a retinning shop here, where you can take your copper cookware when the tinning wears off and they heat it on the torch and swirl molten tin in it. And tin is a trace element that the body uses anyways. Off-topic enough for ya?! XD "Phil Allison" wrote in news:4ie5gcF36alkU1 @individual.net: http://v-cap.com/tefloncapacitors.html ** Err - does " tin foil " = aluminium foil, here ?? ...... Phil |
#31
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Teflon Film Tin Foil capacitors
"Prune" ??? Tin is a completely different element from aluminum. ** Idiot. http://en.wikipedia.org/wiki/Tin_foil |
#32
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Teflon Film Tin Foil capacitors
Phil Allison wrote: http://v-cap.com/tefloncapacitors.html ** Err - does " tin foil " = aluminium foil, here ?? Makes you wonder doesn't it ? Graham |
#33
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Teflon Film Tin Foil capacitors
Prune wrote: Patrick Turner wrote in : teflon, then they move to oilers I don't get the oil thing at all, seems inconsistent to me -- oil has a high dielectric constant, just the opposite of what the reasoning for using Teflon seems to be (and of course the dielectric constant of polypropylene is even lower than Teflon). The only thing that makes sense is that foil would be better than film, for the same reason Vishay makes metal foil resistors along their metal film line (they have a white paper explaining why it matters, to what extent it's just marketing I can't judge). Foil is used for high currents to avoid internal heating. Graham |
#34
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Teflon Film Tin Foil capacitors
Hi RATs!
Yes, we are fickle old rotters It is a bit of a cognitive stretch to think I have been occasionally pushing my limits forward for half a century ... it may well be it is impossible I ever have pushed anything but money and solder ... oh, well, it is fun playing Doktor Audio in my Audio Dungeon, heh heh ha ha hoo hee hoo ha ha. I mean, what did I think I was hearing thru the earpod of the crystal Heatkit radio I built in 1959? Music? You Oz dudes got me into the screen stopper diode madness, as well. This is for triode wired 6550, and all those fine old deviants Somebody, sorry, I am legally brain dead, remember, so I forgot who, sent me a tiny email that said try an SS diode from the plate to the screen stopper resistor ... cathode to the screen end. So, I trucked on down to the Fry's Electronics mega-big box and bought four matching diodes. They carry hundreds of diodes, I bought the only one they had four of on the huge rack ... 600V 6A, perhaps a bit overspec. No chance it is more than 0.1A Yup. Another freaking miracle of sonic enrichment. _____ Is there no end in sight? Remember, I was in Nam ... that "light at the end of the tunnel" was just a luminous fungus infection in the asshole of the GI in front of me _____ Three most common lies told in USA: 1. I gave at the office. 2. It is in the mail. 3. I won't come in your mouth. Happy Ears! Al Patrick Turner wrote: Yeah, I get these dudes saying this and that cap sounds the best, they say they like teflon, then they move to oilers, film this that then foilers and then finally Auricaps and Hovelands and Jensen et all and they don't ever keep an identical system with reference caps to see if the cap change was worth all the expense and soldering. Whener I have changed a capacitor I have heard nothing different, and was unable to get a reliable preference made by a customer more than random 50% chance would predict; Ie, I ask someone to identify which channel has cap X or Y and nobody chooses correctly better than 50% of choices. But nevertheless, if directed, I will solder in whatever caps ppl want. I just cannot see what the heck is so special about teflon, except that its great in frying pans. But Hi Al!!! you have been missing for a long time you old son of a gun! And my mother is priceless. The world's least said sentence:- "Just you come over here sonny, these fancy caps are cheap." The world's second least said sentence:- "Jus youse lie down here luvvy, it won't costyer anyfink". Patrick Turner. |
#35
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Teflon Film Tin Foil capacitors
" wrote: Hi RATs! Yes, we are fickle old rotters It is a bit of a cognitive stretch to think I have been occasionally pushing my limits forward for half a century ... it may well be it is impossible I ever have pushed anything but money and solder ... oh, well, it is fun playing Doktor Audio in my Audio Dungeon, heh heh ha ha hoo hee hoo ha ha. I mean, what did I think I was hearing thru the earpod of the crystal Heatkit radio I built in 1959? Music? You Oz dudes got me into the screen stopper diode madness, as well. This is for triode wired 6550, and all those fine old deviants Somebody, sorry, I am legally brain dead, remember, so I forgot who, sent me a tiny email that said try an SS diode from the plate to the screen stopper resistor ... cathode to the screen end. So, I trucked on down to the Fry's Electronics mega-big box and bought four matching diodes. They carry hundreds of diodes, I bought the only one they had four of on the huge rack ... 600V 6A, perhaps a bit overspec. No chance it is more than 0.1A Yup. Another freaking miracle of sonic enrichment. Making a radical change to the circuit arrangement will of course be audible. AIUI your mod increases distortion which some ppl find audibly pleasing. This may indeed 'enrich' listening for you but it has absolutely nothing to do with hi-fi or sonic accuracy. Indeed for precisely these kinds of reasons - recording studios own all manners of outboard effects to provide this kind of 'enhancement'. Your method is akin to wiring in an such a processor permanently with no way of turning it off so as to hear the original. Graham |
#36
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Teflon Film Tin Foil capacitors
Anyone quoting wikipedia is an idiot. Don't you know any ****tard can edit
articles on that site? I can go and write bull**** on a page as well. Hmm, I should make an article about Phil Allison... "Phil Allison" wrote in news:4ie870F3d7g8U1 @individual.net: "Prune" ??? Tin is a completely different element from aluminum. ** Idiot. http://en.wikipedia.org/wiki/Tin_foil |
#37
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Teflon Film Tin Foil capacitors
I was talking about this:
http://www.vishay.com/docs/49435/49435.pdf Much of it is marketing, of course, but Table 1 is interesting and they say these are measured results of this current noise (as opposed to the regular thermal noise) they are talking about. Eeyore wrote in : Prune wrote: Patrick Turner wrote in : teflon, then they move to oilers I don't get the oil thing at all, seems inconsistent to me -- oil has a high dielectric constant, just the opposite of what the reasoning for using Teflon seems to be (and of course the dielectric constant of polypropylene is even lower than Teflon). The only thing that makes sense is that foil would be better than film, for the same reason Vishay makes metal foil resistors along their metal film line (they have a white paper explaining why it matters, to what extent it's just marketing I can't judge). Foil is used for high currents to avoid internal heating. Graham |
#38
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Teflon Film Tin Foil capacitors
Oops, my mistake, not table 1 but the numbers in the headings on the
subsequent pages. Prune wrote in 4.76: I was talking about this: http://www.vishay.com/docs/49435/49435.pdf Much of it is marketing, of course, but Table 1 is interesting and they say these are measured results of this current noise (as opposed to the regular thermal noise) they are talking about. Eeyore wrote in : Prune wrote: Patrick Turner wrote in : teflon, then they move to oilers I don't get the oil thing at all, seems inconsistent to me -- oil has a high dielectric constant, just the opposite of what the reasoning for using Teflon seems to be (and of course the dielectric constant of polypropylene is even lower than Teflon). The only thing that makes sense is that foil would be better than film, for the same reason Vishay makes metal foil resistors along their metal film line (they have a white paper explaining why it matters, to what extent it's just marketing I can't judge). Foil is used for high currents to avoid internal heating. Graham |
#39
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Teflon Film Tin Foil capacitors
Prune wrote: Anyone quoting wikipedia is an idiot. Don't you know any ****tard can edit articles on that site? I can go and write bull**** on a page as well. Hmm, I should make an article about Phil Allison... Just because you *can* edit it doesn't mean it happens often. I find it a valuable information resource. If the article is patently wrong then it will soon be noticed and corrected. That gives a level of confidence. Your argument incidentally could also be levelled at idiots with their own websites. As in any ****tard can put their own website online. There is *no* safeguard about these whatever and indeed they pose a greater risk. Graham |
#40
Posted to rec.audio.tubes
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Teflon Film Tin Foil capacitors
Prune wrote: Eeyore wrote in : Prune wrote: Patrick Turner wrote in : teflon, then they move to oilers I don't get the oil thing at all, seems inconsistent to me -- oil has a high dielectric constant, just the opposite of what the reasoning for using Teflon seems to be (and of course the dielectric constant of polypropylene is even lower than Teflon). The only thing that makes sense is that foil would be better than film, for the same reason Vishay makes metal foil resistors along their metal film line (they have a white paper explaining why it matters, to what extent it's just marketing I can't judge). Foil is used for high currents to avoid internal heating. Graham I was talking about this: http://www.vishay.com/docs/49435/49435.pdf Much of it is marketing, of course, but Table 1 is interesting and they say these are measured results of this current noise (as opposed to the regular thermal noise) they are talking about. That's about resistors though, not caps. Using good quality resistors especially in the critical locations is critical to first class performance. I'm happy with metal film for those applications. Mind you, there's good metal film and cheap and nasty too ! Graham can I encourage you not to top-post btw ? |
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