Watts and power


Can somebody break it down in layman's terms for me? Why is it that sometimes an amp that has a high watt rating (like, say, a lot of class D amps do) don't seem to always have the balls that much lower rated A or AB amps do? I have heard some people say, "It's not the watts, it's the power supply." Are they talking about big honkin' toroidal transformers? I know opinions vary on a speaker like, say, Magnepans - Maggies love power, right? A lot of people caution against using class D amps to drive them and then will turn around and say that a receiver like the Outlaw RR2160 (rated at 110 watts into 8 ohms) drives Maggies really well! I'm not really asking about differences between Class D, A, or AB so much as I am asking about how can you tell the POWER an amp has from the specs? 
redstarwraith
Oh come on George, I don’t know any amplifier vendor that publishes independent data, only reviewer data.
When I say that it’s Stereophile, Miller Labs, Newport Test Labs ,ect ect and like that are independent that give you the truth. If you want to believe the BS many manufacturers give you that’s your problem.

As more and more these days the manufacturers are "grossly understating their 8ohm wattage" to make the the 4ohm look like it’s closer to doubling, same goes for the 4ohm to the 2ohm, and Stereophile test confirm it.
And if you don’t know this then you’ve been hiding under a rock, and can’t see the forest for the trees. But I already knew this.

It’s easy to drive into 2 ohms with complimentary MOSFETs.
You will not get anywhere near the current performance what same amount of complimentary BJT’s can do into 2ohms. That’s why all the very best amps that deliver huge current into 2ohms are all BJT (bi-polar) again your under a rock


Oh George, maybe someone will give you a new record for Christmas. Yours appears to be broken. 


You have never actually designed an amplifier. That much seems obvious to me. Guessing you don't know much about speaker performance versus damping factor either.


Your holy grail wrt power doubling from 4 to 2 ohms ... Says more about the power supply AND feedback level than the output devices. An amplifier designer would know this. 



I guess you didn't get a new record for Christmas. Ghi, I think you would be surprised what can be built for a $150 in parts when you purchase in volume.
Yeah whatever, do a search to see what I’ve built in the passed, it may open your eye’s, as for now you can see the forest for the trees, just like in your passed life.