Woofer size and power usage.

[SabreWulf69]

Efficiency and sensitivity are only one part of the picture, then there's damping control, what you want to get out of the speaker to begin with and a whole other range of things to consider.

...OK then, power a Jackhammer with a headphone amplifier, and run a low-pass filter to it, or is it again, 'meant for different things'?. Proper build. I give up, your a genius engineer. Who needs big power for big speakers?, I mean clubs do, and concerts, and big subs, and generally every other large speaker from anyone of significance that can build 'proper' speakers like KEF, Bowers & Wilkins, Wilson Audio just for example. But yeah, your somehow right, and I'm somehow arrogant and dumb. No psuedo sciences for me, just plain 'it makes sense'.

Give a real life example of this miracle massive speaker that can for example be powered by a 1-watt amp and play extremely loudly and clear and then I'll be listening. You sure are re-writing the engineering books on this one and throwing out all the required power rating systems they have on I think every speaker in existence.

I have briefly read the Loudspeaker Design Cookbook by Vance Dickinson plus many more including Audio Engineering - Know it all, Master Handbook of Acoustics, Sound Reproduction - Loudspeakers And Rooms by Floyd Toole, and High Performance Loudspeakers - Fourth Edition by Martin Colloms. In which and where are you referring to your theory, if you can point it out without mincing their words, then I'll listen, until then, small speakers = small power, big speakers = big power. Even with tube amps and electrostatics your theory doesn't work in reality, even though 'normal' drivers is what the OP is talking about.

Trust me I'm willing to listen, if you can convince me otherwise. I'd love to power my dual 12" towers at home without a power thirsty amplifier, I really would. I'm talking about if *everything* is larger on the larger driver.

[Edit]
Technically your saying, maybe 2 *different* drivers of different sizes, and having the magnet and voicecoil on the larger one extremely small and having only the diaphragm, frame and surrounding significantly larger than the small one then it would be in this situation that you would need significantly less power than the smaller one?, or the other way around?, I don't know, I prefer my common sense. I look at this as mincing meanings, when I hear bigger driver, I mean bigger driver overall, I say what I mean as a whole and mention if it is only in part.