In Reply to: Re: 6dB gain fron double power? posted by SSL Tech on December 18, 2002 at 12:23:23:
Thanks for not doing the usual when this subject comes up, which is denying the physics of it. Actually, when you double drivers (or cabinets)with a parallel connection while maintaining voltage output two things happen. Halving the impedance doubles the power, giving you 3dB. The other 3dB comes from increasing the radiation efficiency of the system. This holds true up to the point where the radiating area is about 2 times a wavelength squared, beyond which there are no further increases in radiation efficiency and each doubling gives only 3dB. This is why in very large concert systems tweeters require more sensitivity to keep up with the woofers, the opposite of the situation in small systems.
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Follow Ups
- Close-here's the real dope. - Bill Fitzmaurice 16:33:26 12/18/02 (4)
- Re: Close-here's the real dope. - SSL Tech 07:52:06 12/19/02 (3)
- Re: Close-here's the real dope. - Bill Fitzmaurice 13:13:02 12/19/02 (2)
- Re: Close-here's the real dope. - SSL Tech 06:36:23 12/20/02 (1)
- efficiency relative to radiating area - Bill Fitzmaurice 18:32:00 12/20/02 (0)