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Old 3rd December 2009, 01:04 AM   #11
bwaslo is offline bwaslo  United States
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The class D amps I'm using sound better than any Class A amps I've had (tube, MOSFET). Go figure (or go listen to one before saying they suck. They don't)
 
Old 3rd December 2009, 02:57 AM   #12
Bonsai is offline Bonsai  Taiwan
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I agree 100% with you Tinitus. This subject is much more complex than it seems at first. Just like the move to 'lead free' electronic components. The lead is out, but the solder joint takes much more energy to produce. Maybe that nice new Mercedes is 30% more fuelm efficient than the model from last year . . . but if it took 2 x the energy to produce maybe its not that good after all.

However, bottom line is we are generating too much energy from fossil fuels. Period.
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Old 3rd December 2009, 02:59 AM   #13
Bonsai is offline Bonsai  Taiwan
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"The class D amps I'm using sound better than any Class A amps I've had (tube, MOSFET). Go figure (or go listen to one before saying they suck. They don't) "

OK, I was a bit provocative.

Personally, I'll stick with class AB
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Last edited by Bonsai; 3rd December 2009 at 03:06 AM.
 
Old 3rd December 2009, 03:16 AM   #14
Thunau is offline Thunau  United States
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The really messed up thing is, lead in circuit boards is illegal, but hunting with lead shot is still perfectly fine. Lead stays confined in the circuit board for decades, while lead shot once fired falls directly on the ground and starts to pollute. They sell it in 50 pound bags and one hunter can go through a bag in a season. How many circuit boards does it take to use up 50 pounds of lead?
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Old 3rd December 2009, 04:06 AM   #15
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I think most of us here don't put a lot of faith in spice simulations, in terms of absolute numbers they produce.
Now think how more complex it is to model the global environment. To make predictions based solely on CO2 emissions is almost rediculous.
That is like making predictions on amp performance based solely on bias current.
Meteorologists have trouble forecasting tommorrows weather, let alone what will happen in 30 to 50 years.
I am a scientist, and most of us don't know sh*t, so I wouldn't be putting too much faith in what you see on tv. The media like to scare the sh*t out of us so we will keep watching.

Anyway, I have nothing against trying to reduce CO2 emmissions.
We would probably be better off stopping deforrestation and planting new trees rather trying to limit everyones use of electricity, etc.

That is my 2c.

Last edited by Melon Head; 3rd December 2009 at 04:18 AM.
 
Old 3rd December 2009, 05:27 AM   #16
cbdb is offline cbdb  Canada
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How can anyone think that 6 billion people (and counting) burning fossil fuel dosnt effect the environment? The funny (sad) part is that nature dosnt care, it will evolve and recover (there have been many environmental traumas and mass extinctions in the past). Its the human race that will suffer. But go ahead and drive your hummers, use your class A, it will be your children or grandchildren that will have to pay.
 
Old 3rd December 2009, 05:34 AM   #17
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Quote:
Now I know why everybody is going to Class D - When will Nelson be forced?
By whom? Fascist stormtroopers?

Quote:
However, bottom line is we are generating too much energy from fossil fuels. Period.
Fine. Then let's go to nuclear power plants like France has done.

Btw, I'm more committed to energy conservation than most. I heat my house with a geothermal heat pump. I return all my water back to the earth. But I will do all I can to prevent hucksters like Al Gore (did you know he's already made 100 million US dollars off the global warming scam? - follow the money), the number cooking charlatans at the UEA, or others who are trying to use the (Enron!) Cap and Tax legislation to bully and fleece the private citizen under the phony ruse of anthropogenic global warming when there's been over a decade of global cooling, no measurable sea level rises in the last hundred years and the best science says that the earth will warm by no more than 1 degree C in the next hundred years by which time the world'll be leaving carbon based energy production purely due to market forces.

Besides, 2.5 billion Chinese and Indians (that's 40% of the world's population) are giving HopenChangen a big fat middle finger and daring the warmingistas to do something about it. If they can tell when something's rotten in Denmark, maybe the rest of us should get a clue before the rest of us in the US and Europe are gang raped big time by the Socialist Warmingista control freaks.

Last edited by thoriated; 3rd December 2009 at 06:02 AM.
 
Old 3rd December 2009, 05:47 AM   #18
ra7 is offline ra7  United States
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A handful of people switching to class D from class A is not going to make any difference. You can save more energy simply by removing some extra weight from your car.
 
Old 3rd December 2009, 05:56 AM   #19
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Class-D is not all bad. At least it does not try to force transistors to act as something they are not - linear devices! :P


(Well, the output transistors, anyway).
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Old 3rd December 2009, 05:59 AM   #20
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