2. amps-preamps
  3. 153225-130247

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
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.
georgehifi's avatar
georgehifi
10,312 posts
 
You don’t seem to have actual amplifier architecture design experience.


Have a better look, and include Class-A and water cooling.
http://corrimalregion.unitingchurch.org.au/wp-content/uploads/2018/10/image2.jpg


You adapted the compression circuit from mixers to make a pre-amp billed as passive, though technically not passive.
Wrong again, once again you’ve gone "completely off thread subject" and dare to attack my product (remember what happened last time), again do a search back to the 1970’s when I first introduced it into audio.

Also the signal goes through nothing but a passive device called a Cadmium Photo Cell (CdS cell) that chemically changes it’s characteristics with any sort of light exposure, and which has no electrical active properties running through it at all. https://ibb.co/JmQS31T
All this little baby needs is light to make it work, so it’s totally passive
https://ibb.co/Q6jKBGZ

Maybe this is a more apt description.
https://image.shutterstock.com/image-photo/scared-ostrich-burying-head-sand-260nw-232433350.jpg
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