Interesting development - true dipole driver (sub) - Adire Parthenon

[dhook17322]

Adire Parthenon driver, Fs of 7 Hz, up to 12" stroke one way, 16 cu. ft displacement with 48" diaphragm, more output than 12 15" high performance subs. Interesting that it requires no enclosure or cab. Doesn't even remotely look like a speaker.

[Altec19]

Hmmm . . . Does it thrust or rotate???

[cclark65]

It appears to Thrust, look as the left photo, the center pole is extended. In the "motor" photo on the right, the pole is collapsed.
I don't understand how it could provide the bass without a cabinet of some sort, unless just by the sheer amount of thrust (12" stroke!)

[cclark65]

http://adireaudio.com/TextPages/Part...eFrameText.htm

[dhook17322]

Got this response from Adire on those questions:
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my questions:
Your article on the Parthenon is fascinating, but it leaves many questions unanswered. First does it require an enclosure to protect the movement, especially the radiating panel. Seems like the panel without enclosure would tend to cancel out with rear emissions to some degree, same reason speakers need an infinite baffle at least to work well. Do you furnish the panel, and how much weight will it handle? Lastly how much power is necessary to drive it to realistic levels (e.g. pipe organ ). Thanks.
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Dave,
Thanks for the e-mail! As shown, it's a dipole driver. No baffle needed. Dipole subs do not use a closed space (or even an infinite baffle) to operate.

We custom build the driver and panel based upon the needs of the client; there is no need to add weight to the panel.

Power required is completely application specific. We custom make the driver for your application, which can include available power levels.

Thanks again,
Adire Tech Support [email protected]
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I submitted additional ques6tions as their response didn't satisfy my curiosity.

[Cal Weldon]

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DIY Parthenon

Cal