Having one end closer to line speeds up settling time. If the source is very low and the load matches line, the delay will be exactly one transit.
Matching source to load for speakers is not a good idea power wise.
For a speaker that wildy varies across the audio band, the settling time will be frequency dependent. Not so bad as long as the settling time doesn't climb over that which we can discern.
jn
I dunno, it seems like it's the same old stuff recycled (even the adjectives), perhaps for a new generation of stupid people who were unaware of earlier frauds. I'm disappointed in the lack of innovation in scams.
They badly need a copy editor. No hope that they'll ever get a conscience or integrity.
They badly need a copy editor. No hope that they'll ever get a conscience or integrity.
😱 I certainly do hope that every single electron is spin corrected !
This is indeed a staggering piece of technology. I even wonder why they did not call it "The Sound Wave Magnet" ? I am going to suggest this name when I place my order.😎
At this rate of oil pumping, snakes will become extinct sooner than expected.
Serge
This is indeed a staggering piece of technology. I even wonder why they did not call it "The Sound Wave Magnet" ? I am going to suggest this name when I place my order.😎
At this rate of oil pumping, snakes will become extinct sooner than expected.
Serge
It raises the old question of how people who are sufficiently stupid to buy this stuff are apparently sufficiently clever to earn the money to pay for it. They can't all be gangsters or bankers.
Just thought: professional footballers! They must be the target audience.
Just thought: professional footballers! They must be the target audience.
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No. Train and lorry drivers get paid more than many physicists. The problem is that our bosses know we would work for free if we could afford to. Fortunately we don't have to spend our money on audio gizmos.
Not really a problem at AF. Don't confuse RF impedance matching with low AC power transmission.
You need to rethink the problem, as I've certainly not confused the two.
As I stated, the settling time when both source and load are very low with respect to the line impedance will be two to three orders of magnitude longer than a properly terminated line. That can bring it into the realm of localization.
Please understand what has been written before speaking on this.
edit: there is one very simple concept you need to understand. A transmission line can only send signals which match the line impedance at it's prop velocity. An 8 ohm speaker requires 1 ampere for every 8 volts. A 100 ohm cable cannot satisfy an 8 ohm load after 1 transit, it is a violation of some dead guys law (you know, the one with the bad hair).
jn
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What is a 100 Ohm cable at audio frequencies made out of? Carbon cotton spark plug wire? 99.95 Ohms of it will be DC resistance. Or do you have a wire that has several thousand uF hung off of every foot and it is wrapped around a feritte rod? Your math is fine, pleas look into the physics a bit more.
BTY, 75 Ohm coax makes a very, very good speaker cable. So does 300 Ohm twin-lead. I would not swear to it, but maybe slightly better than 16 ga zip cord. At AF, it's impedance is fractions of an Ohm.
BTY, 75 Ohm coax makes a very, very good speaker cable. So does 300 Ohm twin-lead. I would not swear to it, but maybe slightly better than 16 ga zip cord. At AF, it's impedance is fractions of an Ohm.
DF96
I don’t mean to start a debate and I will not feed a discussion as I am not up to this but I would like to ask you if you are aware of Heaviside’s writings over this ‘misconseption’ .
George
More fun to study microwave. Down a square wave guide:
Propagation between the short sides
Propagation between the long sides
Skin on the inside
Skin on the outside
Corkscrew down the middle
All at different frequencies.
Is it any wonder all of the old Navy radar guys I knew were not quite right? I did get some snow sled HBO antennas to work though. 2.6 gig. At 2.6gig, impedance matching is everything! at 2.6K, it is nothing.
Propagation between the short sides
Propagation between the long sides
Skin on the inside
Skin on the outside
Corkscrew down the middle
All at different frequencies.
Is it any wonder all of the old Navy radar guys I knew were not quite right? I did get some snow sled HBO antennas to work though. 2.6 gig. At 2.6gig, impedance matching is everything! at 2.6K, it is nothing.
Ah, so the strawmen and red herrings begin. I would have thought you knew better, so please discontinue the stupidity.
A zip cable is roughly 100 ohms, with an effective dielectric coefficient of about 4. This gives the cable a prop velocity of .5 lightspeed, one foot in two nanoseconds.
Are you claiming that a 20 foot piece of 100 ohm zip can deliver energy to a 4 ohm load in 40 nanoseconds?
It will be closer to 4 microseconds.
If you wish to have this discussion, you need to learn a tad more.
jn
butter, salt, or both?
Sigh...I know.
You've no idea how many times I have to teach this.
jn
I got an "A+" in Microwave class.....hope I can keep up with this!
Kinda like a Tennis match but without the side to side movement, rather it's a up & down movement w/text.
I just got some Popcorn this Afternoon...dogs will eat the spillage.
______________________________________________________-Rick...........
Kinda like a Tennis match but without the side to side movement, rather it's a up & down movement w/text.
I just got some Popcorn this Afternoon...dogs will eat the spillage.
______________________________________________________-Rick...........
John, the issue might be a confusion in terminology, conflating wire resistance with characteristic impedance.
Viz:
Viz:
That is certainly one possibility. However, since he did actually use the proper terminology here::
He does indeed know what a line impedance is. He would not say a 50 ohm cable has 50 ohms series resistance (at least I don't think he would), so to suddenly go off with 99.9 resistive ohms as the conductor resistance of a zip cable as I stated is certainly looking like a wild attempt to divert from the actual discussion.
And as I re-stated;
I used the term "properly terminated", which is again, t-line theory. Settling time is part of control systems theory, very heavily taught in the digital domain as well due to finite sampling intervals, the lag time.
The basic problem is the fact that most are taught simple concepts in e/m class, but never much in the way of critical thinking. The settling time "concept" as applied to low frequency sub wavelength t-lines that are horribly mismatched is a combination of t-line theory and control theory.
One very important concept I repeat here:
Sigh... you know, I've come a long way on the thermal paper, but honestly, I believe more and more that I should probably write up some t-line theory and apply it to this audio domain..
jn
No, never said that. You are the one who is claiming the cable has an impedance of 100 Ohms at audio frequencies. When I went to school, impedance was still a function of frequency.
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