Scott, what Bob Carver did was obvious, and a bit disappointing. He is in YOUR CAMP when it comes to what people can really hear, so he ignores 'perfection' for visual excitement, and/or a good story. He apparently feels that he needs to make a good living, and this approach has helped him over the decades.
KBK,
I can and have worked on all kinds of cars and have had many different kinds of cars. Worked on some older Toyota's that were a pita with all the vacuum hoses everywhere, and gladly they have come a long way since those days and have had to rewire a Maserati that someone had hacked the wires in the car for some reason. now why they were all black someone else can answer that one? As far as the BMW, while it may be safer than some other cars I don't know that they are any better than many other well designed cars. But in a good hit you can count on that the car will be a total loss, but that is okay if you survive the accident. At the same time I can say that on a long ride I was more than happy to get out of the terrible seats in the 325I that is for sure. And the runflat tires are horrid, they just kill the ride even if you don't have to worry about a flat. Give me a normal tire and at the cost of over $500 dollars per tire I'll take the chance of a flat for a better ride. I wasn't to please with inside trim pieces falling off or the outside turn signal light doing the same thing. And the positioning of the wiper switch always peeved me when reaching for the start button. so you can love the car, I didn't in the least except for the fact it looked nice and was frugal with the fuel on the freeway, but definitely not on the street. Try and change something as simple as the H5 headlight bulb sometime, nothing great about the serviceability of those cars.
I can and have worked on all kinds of cars and have had many different kinds of cars. Worked on some older Toyota's that were a pita with all the vacuum hoses everywhere, and gladly they have come a long way since those days and have had to rewire a Maserati that someone had hacked the wires in the car for some reason. now why they were all black someone else can answer that one? As far as the BMW, while it may be safer than some other cars I don't know that they are any better than many other well designed cars. But in a good hit you can count on that the car will be a total loss, but that is okay if you survive the accident. At the same time I can say that on a long ride I was more than happy to get out of the terrible seats in the 325I that is for sure. And the runflat tires are horrid, they just kill the ride even if you don't have to worry about a flat. Give me a normal tire and at the cost of over $500 dollars per tire I'll take the chance of a flat for a better ride. I wasn't to please with inside trim pieces falling off or the outside turn signal light doing the same thing. And the positioning of the wiper switch always peeved me when reaching for the start button. so you can love the car, I didn't in the least except for the fact it looked nice and was frugal with the fuel on the freeway, but definitely not on the street. Try and change something as simple as the H5 headlight bulb sometime, nothing great about the serviceability of those cars.
On the subject of a good model for a loudspeaker why is that such a seemingly impossible task? With the simplified models used to do Thiel-Small analysis for speaker properties why couldn't a back EMF model be modeled as an AC motor in effect or ac solenoid? I'd think someone could come up with some sort of model for the waveform output for a moving coil in a magnetic field?
The comments on the bigger and much more expensive model was not complimentary also...
Black Profit 1 ....
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Sorry A.Wayne but the 3 series BMW's are on the list of cars that have a high number of quality issues, I am not making this stuff up. Nice car if you get one that was put together well but to many aren't. If the car is so great why is the warranty so short? You aren't going to convince me they are great, I have talked to many other owners saying the same thing. Beautiful car with issues of quality control.
Quality control .... Always
Bad seats and poor ride .. no
Never heard that, been around that game along time, all German cars suffer from Quality control. Audi and Porsche is the best at it IMO, with Porsche being tops, BMW and Merc the worst, they are all Mechanically stout and great driving machines, Jap cars on the otehr hand have great quality control and digital driving enjoyment.
Want transportation ..... Buy Japanese
Want pure driving enjoyment .... Buy Italian
Want almost pure driving enjoyment and reliability ... Buy German
Want to feel patriotic ....... Buy American, Korean and Chinese
In a nut shell ....
I hope you were treated with respect at the party. I know the host Paul was happy you would be there.
Then we're all knee deep in it...
Get yourself a good cvr and a driver, measure the difference between the blocked response of a two tone signal vs a free air response. Use a 20 and 1K signal pair.
Blocked, you see the non velocity eddy losses of the 1K signal.
Free air, you see the impact cone velocity has on the eddy losses of the 1K signal.
For single tone, compare blocked rs vs freq with unblocked. Ignore the low end, the meter doesn't understand the diff between mechanical storage and magnetic.
jn
A.Wayne,
The ride with the run flat tires reminded me of a lowered car with really stiff springs, not a great thing for a daily driver. Just changing to a standard tire makes a big difference in the ride, I have been in other BMW's that didn't have the run flat tires and they are much nicer as far as the ride, better handling also. As for the seats I guess that is an individual thing, but again I have been in cars with the optional Recaro seats and they were much better than the standard seats. That is just my opinion on that one. Give me Shiel or Recaro any time if I have a choice.
The ride with the run flat tires reminded me of a lowered car with really stiff springs, not a great thing for a daily driver. Just changing to a standard tire makes a big difference in the ride, I have been in other BMW's that didn't have the run flat tires and they are much nicer as far as the ride, better handling also. As for the seats I guess that is an individual thing, but again I have been in cars with the optional Recaro seats and they were much better than the standard seats. That is just my opinion on that one. Give me Shiel or Recaro any time if I have a choice.
Some is covered here (lite reading
)http://files.clanbazis.com/BOOKS/Ac...On Frequency Response (W. Marshall Leach).pdf
Another, more intriguing question is: can we capture this loudspeaker equivalent model in conventional mathematical terms?
The reason for posing this questions is that two loosely coupled resonators can display chaotic behaviour. Everybody knows this toy, which is fine example Space Shuttle Orbiting The Moon Motion Sensory Perpetual Desk Toy | eBay
Now, compare this to Newton's attempt to corner the executive desktop toy market, which is rather straightforward to model.
A loudspeaker consists of a number of nested mechanical resonators coupled to a number of nested electrical ones.
For that reason, chaotic behaviour may be expected, and an accurate model should display the same.
Actually, that is what I asked.
You're giving an example where all the variables are not considered. Without details on all the state variables, all one can do is use chaos theory.
A loudspeaker is not that bad.
I believe you're overthinking the problem.
ps...bet ya never though you'd hear me say that..
jn
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