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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
audiozenology
362 posts
 
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. 



georgehifi's avatar
georgehifi
10,312 posts
 
You have no idea, I can see that, keep listening to your $420 3000w Behringer class of amplifiers if it makes you happy.
https://www.storedj.com.au/behringer-nx3000-ultra-lightweight-3000w-class-d-power-amplifier

And look! you can now get it for $350!!!!
https://www.bhphotovideo.com/c/product/1403415-REG/behringer_nx3000_ultra_lightweight_class_d_3000_watt.html
audiozenology
362 posts
 
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.
georgehifi's avatar
georgehifi
10,312 posts
 
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.


audiozenology
362 posts
 
Did my research. Stand by my post. You don't seem to have actual amplifier architecture design experience.  You adapted the compression circuit from mixers to make a pre-amp billed as passive, though technically not passive. No obvious experience with any serious design of BJT or FET amps.
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