Tubes have a couple of differences to transistors in practical circuits. Firstly, for moderate power levels, tube power amplifiers are often "single ended", which has the second harmonic as its strongest harmonic. Transistorised amps, including MOSFETs are usually configured as a complementary pair, which tends to cancel out even harmonics. Not the best musicians, who want those even harmonics. Tube aplifiers also almost aways have transformer coupled outputs, which are another source of distortion (fo better or worse), due to their iron core. Modern (hi fi) amps are generally coupled to the speakers.
transistors, and CMOS JFETS have been observed behaving harmonically similar to vacumm tubes. Even among basic bulk components such as op amps there are folks who swear one vendor's version of the same chip sounds way better even though their specs are slightly different.
It also depends on the exact circuit design used.
... Dachshund kennel ad: Get a long little doggie.Speaking of high end audio, I remember a challenge presented by the Amazing Randi to a maker of high end audio cables. He challenged them by saying even i self proclaimed and well established audiophiles would not be able to tell
On 09-21-19 00:43, Moondog wrote to Vk3jed <=-
Speaking of high end audio, I remember a challenge presented by the Amazing Randi to a maker of high end audio cables. He challenged them
by saying even i self proclaimed and well established audiophiles would not be able to tell the[ difference between their high end cables and a set of Monster cables he picked up at Best Buy. The problem was none
of these "audio experts" would suc bmit to a blind test because
choosing the cheaper cable may ruin their reputations. I also recall Denon or a simialr company was trying to market a proprietary cable
format to compete with HDMI, and they were charging $300 for a 6 foot cable. The product reviewer needed a longer cable in order to perform
his testing, so he asked a friend to figure out the wiring scheme. The "proprietary format" turned out the same pinout as a CAT 6 patch cable.
Vk3jed wrote to Moondog <=-
format to compete with HDMI, and they were charging $300 for a 6 foot cable. The product reviewer needed a longer cable in order to perform
his testing, so he asked a friend to figure out the wiring scheme. The "proprietary format" turned out the same pinout as a CAT 6 patch cable.
Hmm, a fool and their money.... ;)
I have several older AC/DC albums, Nazareth, Eagles, Foriegner, Bob Seagar, Styx, plus some others I recovered that were older, like some Johnny Cash, Janis Joplin, Young Rascals, the Animals, and Rolling Stones. I think there's some Beatles stuff in the cabinet.
Yeah, there was a lot of dodgy stuff going on with cables. The truth, AFAIK as long as the impedance of the cable is low enough not to be significant, t cable should be audibly "transparent". Heavy enough elevtrical wire should the trick.
On 09-22-19 06:57, poindexter FORTRAN wrote to Vk3jed <=-
The Denon "Digital Audio Interconnect" cable (3 foot cat6 cable) on
Amazon for $499 got reviewers to pile onto it - it's an entertaining
read if you can find it.
On 09-22-19 16:06, Moondog wrote to Vk3jed <=-
The company making the claims would support their quality claims by showing loads of graphs depicting frequency reponse and attenutation, however Randi said that was immaterial since he wanted a human
"expert"to tell them apart in a blind test, not an oscilloscope. They
may have been better in the ways of materials and manufacturing,
however the doubt was if their $500 cable was more noticeable than a
$25 cable. The audio guy I worked with said price was no concern,
since a guy spending $10k on a set of speakers isn't going to bother
with nickle and diming over the price of a cable.
The Denon "Digital Audio Interconnect" cable (3 foot cat6 cable) on
Amazon for $499 got reviewers to pile onto it - it's an entertaining
read if you can find it.
On 09-22-19 16:06, Moondog wrote to Vk3jed <=-
The company making the claims would support their quality claims by showing loads of graphs depicting frequency reponse and attenutation, however Randi said that was immaterial since he wanted a human "expert"to tell them apart in a blind test, not an oscilloscope. They
Well, the product is marketed for use by humans, so actual double blind listening tests makes the most sense.
may have been better in the ways of materials and manufacturing, however the doubt was if their $500 cable was more noticeable than a $25 cable. The audio guy I worked with said price was no concern, since a guy spending $10k on a set of speakers isn't going to bother with nickle and diming over the price of a cable.
Yes, I reckon they would easily sell them. Me? I have too much Scots in my ancestry. I'm prepared to spend money for quality, but I'd still pay $50-$1 for decent electrical cable (copper is still somewhat expensive) than wastin $500 on something of dubious benefit.
... A wholesome mind is wasted potential.
Re: Re: 3d printing
By: poindexter FORTRAN to Vk3jed on Sun Sep 22 2019 06:57 am
The Denon "Digital Audio Interconnect" cable (3 foot cat6 cable) on Amazon for $499 got reviewers to pile onto it - it's an entertaining read if you can find it.
Recently I was at a store and saw a cat5 ethernet cable in a package that sa
Nightfox
On 09-23-19 14:32, Moondog wrote to Vk3jed <=-
You pay extra for the fancy braided cable sheathing and direction
arrows embossed in the connectors.
On 09-23-19 14:32, Moondog wrote to Vk3jed <=-
You pay extra for the fancy braided cable sheathing and direction arrows embossed in the connectors.
Not the sort of thing I'd pay extra for. ;)
... I don't do drugs. I get the same effect just standing up fast.Not my cup of tea either, but some dig all the extra bells and whistles
One thing I think is funny is that some music (I thought most music these da
was recorded digitally, but I've seen FLACs going around that were recorded at the quality has more to do with the electronics of the player than the st
On 09-24-19 11:59, Moondog wrote to Vk3jed <=-
Not my cup of tea either, but some dig all the extra bells and whistles
Recently I was at a store and saw a cat5 ethernet cable in a package that said "streaming internet cable".
Nightfox
Re: Re: 3d printing
By: Nightfox to poindexter FORTRAN on Mon Sep 23 2019 10:09 am
Recently I was at a store and saw a cat5 ethernet cable in a package that said "streaming internet cable".
Nightfox
It's sad, a whole new generation of lemmings are being raised with a level o abstraction that insulates them from what/how things communicate in the digi world. My daughter doesn't understand how some apps on her phone(if not all could use data. She doesn't understand IP address and why they're needed. It's like we're evolving into the people in the movie, "Wall-E". All they k is that layer of abstraction and no comprehension of what lies below it. Ju sad.
James
It's sad, a whole new generation of lemmings are being raised with a leve abstraction that insulates them from what/how things communicate in the d world. My daughter doesn't understand how some apps on her phone(if not could use data. She doesn't understand IP address and why they're needed It's like we're evolving into the people in the movie, "Wall-E". All the is that layer of abstraction and no comprehension of what lies below it. sad.
James
lol. 35 years ago I wrote a report in school on how computers will become a common an appliance as a TV or telephone, and even more when every gets acce
to a high speed data line. Teacher gave me B because I had a good imagination, but otherwise said the idea was ridiculous. Who would want to carry around a computer, let alone have more than one? No one would want on in their living room. I ran into him a couple of years ago, and all he had to say was, "yep. You were right."
It's sad, a whole new generation of lemmings are being raised with a level o abstraction that insulates them from what/how things communicate in the digi world. My daughter doesn't understand how some apps on her phone(if not all could use data. She doesn't understand IP address and why they're needed. It's like we're evolving into the people in the movie, "Wall-E". All they k is that layer of abstraction and no comprehension of what lies below it. Ju sad.
James
On 10-02-19 05:18, Nitewaves wrote to Jamestyree <=-
James, I'm sorry, but it's always been that way and it's absolutely ridiculous to expect otherwise. We geeks live in a bubble that's tinier than we'd like to admit, made full with our obsessive drive to
understand minutae. We are fools to expect that from other people, especially end users that just want the damn technology to work. And I wouldn't have it any other way -- call it job security.
And these same people we could easily criticize for not knowing tcp/ip
and 802.11 will surprise you with skills, talents, insights, and
hobbies most geeks wouldn't imagine.
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