very unlikely Ramallo 1 watt at 2 meter would be 90 db you would need 2.5
True
(3,2W for one speaker 1,6W for every speaker)
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Yup. It only needs to charge for about 30 minutes to 1 hour on average per day actually doesn't matter if it's summer or winter.
My system usually draws less than 1.2W all included when online.
The more ecologic is a class D with a high sensitivity speakers
Actually ecologic, or perhaps even environmentally friendly would be class B rather than class D which usually has a rather high standby consumption.
My NCC200 which is biased almost into class B, runs much cooler than my ICE, and if one uses an SMPS the standby consumption is even higher...
No school of olde is much greener
sorry, but you need to prorate the cost of those panels over 10 years and then come back with a number. Solar energy isn't exactly free.
edit: seems other people have already mentioned this.
My computer isn't part of my sound system. As said before. The system is completely off-grid, has a portable FLAC player with digital output to an external DAC. Combined current draw of the entire system with normal listening levels is 100mA.
Ok, cost of electricity per year including cost of panels is then €1. I calculate with 20 years of running time for the panel because that's what they're rated at. 80% efficiency after 20 years of use.
If we're really going to do this properly, then you have to account for the energy spent in manufacturing the panels, mining the silicon, bringing it to the manufacturing plant and so on.
At the end though, PV looks pretty good compared to fossil electricity. But that's another thread, and probably another forum.
The impact of using a Class A amp on the environment is minimal. Don't drive as much, take a walk to the convinience store every so often, and you're good. For those of you who fly often, you can live happily knowing that a lifetime of Class D use is not even going to get you 1% of what you've spent.
At the end though, PV looks pretty good compared to fossil electricity. But that's another thread, and probably another forum.
The impact of using a Class A amp on the environment is minimal. Don't drive as much, take a walk to the convinience store every so often, and you're good. For those of you who fly often, you can live happily knowing that a lifetime of Class D use is not even going to get you 1% of what you've spent.
Saturnus said: There's absolutely nothing in the principle of a class D amp that even hints at it being digital in any way.
I'd have to say it's because it is switching. That's just my perspective, though.
I tended to think of Class-D as a sort of novelty. Then I got a Tripath and listened to it. "World-class" is certainly debatable, but the price/performance ratio most certainly not.
I don't think Class-D will spell the end for other types, except in the mainstream marketplace.
I'd have to say it's because it is switching. That's just my perspective, though.
I tended to think of Class-D as a sort of novelty. Then I got a Tripath and listened to it. "World-class" is certainly debatable, but the price/performance ratio most certainly not.
I don't think Class-D will spell the end for other types, except in the mainstream marketplace.
Class D can be a bit of a black art and isnt as well served as AB yet.
I would guess that class D will be vital in mass manufactured equipment due to its efficiency.
A search on ebay doesnt bring up many class d modules as yet.
Right. And any power conscious device would also shut down the power amplifier when a signal is not present. Of course you can do this with a class AB amp too, but if a class D happened to have a higher quiescent dissipation then a comparative class AB amp, it would become somewhat irrelevant if both are turned off.
Well then one needs to play music on it constantly to make it sound right...
Nothing sounds good when cold - unless it is supposed to run cool
In my experience there is no difference in sound between a "cold" and "warm" Class-D amp, at least not with ICEpower and Hypex.
In the "old days" when I had tube amps and transistor class-A, there certainly was a difference. Or at least I thought is was...
The sound of my ICEPOWER based amp, do certainly differ alot from cold to warm. Maybe its down to its powersupply more than the actual amplification...
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