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-   -   Now I know why everybody is going to Class D - When will Nelson be forced? (http://www.diyaudio.com/forums/pass-labs/156047-now-i-know-why-everybody-going-class-d-when-will-nelson-forced.html)

coloradosound 2nd December 2009 07:29 PM

Now I know why everybody is going to Class D - When will Nelson be forced?
 
Mr. Green's Efficiency Watch - Q4 2009
http://now.eloqua.com/es.asp?s=1264&...167ae19348b8#2

Audio/Video Specification : ENERGY STAR
http://www.energystar.gov/index.cfm?...dio_video_spec

Nelson Pass 2nd December 2009 08:16 PM

:cool:

bear 2nd December 2009 09:53 PM

I suppose when they start to ration electricity Class A will not be something that anyone other than those with off grid energy sources or have wealth can use. Until then, who cares about "Energy Star" consumer junk specs??

_-_-bear

stinius 2nd December 2009 10:02 PM

1 Attachment(s)
Quote:

Originally Posted by bear (Post 1999786)
who cares about "Energy Star" consumer junk specs??

_-_-bear


stinius 2nd December 2009 10:23 PM

Quote:

Originally Posted by bear (Post 1999786)
who cares about "Energy Star" consumer junk specs??

_-_-bear

Polar bears resort to cannibalism as Arctic ice shrinks - CNN.com

FrankWW 2nd December 2009 11:26 PM

This is about to get "POLITICAL" a Bad Thing, I think
 
Quote:

Originally Posted by stinius (Post 1999815)

I won't comment myself but here is a quote from a paper to be found here:

Arctic warming goes with the floe « Watts Up With That?

Quote:

On the 2nd of November 1922, The Washington Post published the following story: “Arctic Ocean Getting Warm; Seals Vanish, and Icebergs Melt”. The corresponding report in the Monthly Weather Review of November 1922 (Ifft, 1922:589) had also stated that the ice conditions in the Northern North Atlantic were exceptional; in fact, so little ice has never before been noted.
Well, I will comment only to say such conditions have existed before and no blame was laid to anthroplogically caused global warming. The most notable period was that of the Medieval Warming Period during which they were growing wine grapes in Norway, grain as far North as the 70th parallell, and that was the period in which Greenland got its name. I fear there is a loss of judgement on the part of folk who are munching down at the trough of public funding - this is very bad for Science.

Bonsai 2nd December 2009 11:36 PM

Well, ice cores from glaciers in the northern and southern hemisphere tell a very different story. The data avaiable from these core extractions goes back 800 thousand years and we are currently experiencing the warmest period based on this information. In the last 60 years, the carbon content in the atmosphere has gone from 271ppm to >350ppm and the increase carbon going into the atmosphere has DOUBLED in the last 10 years. At the current rate, the atmospheric carbon content will hit 450ppm by 2050. The warm peiod in the middle ages was driven by a different mechanism - the current warming is driven by an increase in atmospheric carbon. If you want to see just how bad the problem is, take a look at the latest National Geographic - they have a nice graphic depiction near the front of the magazine.

I don't know about you, but in my books this is serious sh1t.

I agree, class D sucks. Class A above 10W will contribute to the problem above. So go for Class AB and save the planet.

Fuling 2nd December 2009 11:44 PM

Quote:

Originally Posted by Bonsai (Post 1999882)
class D sucks. Class A above 10W will contribute to the problem above. So go for Class AB and save the planet.

...or class A below 10W and speakers above 100dB/W:)

Thunau 2nd December 2009 11:46 PM

Please take the GW discussion elsewhere. It's become more about politics than science long time ago.

I'm pretty happy with combination Class TD amp (Lab Gruppen C10:8- 8x125W installation amp) It's rather efficient and sounds great. Awesome low end and smooth as silk highs.

tinitus 3rd December 2009 12:26 AM

Well, a major problem with energy is really that at certain times of day and night a lot more energy is produced than really needed
Their best solutions is to store this "waste" energy to pump up water, and use that water to pump turbines when needed again
Problem right now is that the very long energy transport isnt sufficiently dimensioned to do it

Another paradox is that an electro motor driven car polute just as much as any other normal car, as long as energy comes from common powerplants
And how many cars do you think it would take to polute as much as one single moped
In Germany theres quite a lot "waste" money iven to people who buy new better cars
But that means they have exstremely many "old" cars that arent really old at all, but quite fine cars, but now just waste

If I use say a Pass F5 in all of the cold winter months, it wouldnt surprice me if I actually would save money on that
You also need to think about the energy used to produce all the components that goes into any design, and all transport issues
Also consider whether its rebuildable, or just waste when burned or out of date
A tubeamp could last forever

This constant buy and throw away is far more worse
And this "panic" could really become much more dangerous
Dont forget that very many product that are advertised to save energy, arent really holding specs
Some clever people are just using these circumstances to make huge profit, and really only making things much worse


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