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Old 1st March 2014, 10:37 PM   #1
aaadirk is offline aaadirk  United Kingdom
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Default Smaller enclosure patent. Anybody tried it?

For my 12 inch full range speaker i wantend to build small enclosure to make it bookshelf fit. The usual challenges create distortion, but than came accross this patent Loudspeaker systems - Sonic Systems, Inc.. Anybody knows a link to who tried it. It suggest significantly smaller enclosures needed than normal.

Just try to understand if someone is familiar with the design. Regards
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Old 1st March 2014, 10:51 PM   #2
sreten is offline sreten  United Kingdom
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Hi,

The short version is its a patent taken out by a complete idiot.
The longer version isn't much longer, the patentee is an idiot.

rgds, sreten.

Idiot here is used in the context of the technical field addressed,
and a delusional attitude towards having any real comprehension.
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Last edited by sreten; 1st March 2014 at 11:02 PM.
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Old 1st March 2014, 10:58 PM   #3
aaadirk is offline aaadirk  United Kingdom
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Thanks Sreten. That it is not groundbreaking was suspected as the patent is from 2000 but the guys behind it do run a respectable company Soundsphere Soundsphere | The Best Sound Around?. Would you have a bit more backing to your view?
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Old 1st March 2014, 11:07 PM   #4
sreten is offline sreten  United Kingdom
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Hi,

FWIW any half decent 12" full range driver will by definition
require big cabinets, that is basically simply their nature.

rgds, sreten.
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Old 1st March 2014, 11:17 PM   #5
aaadirk is offline aaadirk  United Kingdom
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My comment did not get moderated yet I guess due to the link init. The guys behind the patent have a big business in spherical ceiling speakers which are pretty much sold worldwide. Not completely bonkers they are it seems. The 12 inch full range are ciare vintage ones.
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Old 1st March 2014, 11:45 PM   #6
sreten is offline sreten  United Kingdom
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Quote:
Originally Posted by aaadirk View Post
Would you have a bit more backing to your view?
Hi,

Do I need any ? You can always sell crap to anyone who has
no idea with a good line in marketing BS. Overpriced garbage
is my best guess for their products, and my best guess for
their pictures is temporary trails, no pics of full installations.

They are in all respects useless at addressing real problems.

They are presented as a panacea, for the very gullible.

They may be the leader of omni solutions, simply because
its a poor solution and they are the only idiots peddling it,
and if successful that is because idiots buy into the BS.

rgds, sreten.
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Last edited by sreten; 1st March 2014 at 11:53 PM.
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Old 2nd March 2014, 12:09 AM   #7
sreten is offline sreten  United Kingdom
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Hi,

You need some idea of the driver parameters to design a box.

Fs and Qts can be derived from a free air frequency
sweep and looking at the the impedance curve.

Vas can be derived by repeating the above with a
rear volume, say 1cuft, by the change to Fbox.
Qts to Qbox can be checked for consistency.

With Fs, Qts and Vas you can design the box.

rgds, sreten.
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Old 2nd March 2014, 12:29 AM   #8
dewardh is online now dewardh  United States
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Quote:
Originally Posted by sreten View Post
The short version is its a patent taken out by a complete idiot.
The longer version isn't much longer, the patentee is an idiot.
I'm missing the "novelty" of this "invention" as well. Sonotube (cylindrical) enclosures are prior art. Aperiodic venting has been around (in commercial products) for at least half a century. The only thing remotely "novel" is the reverse dome end cap (although that idea is centuries old as well), and that's because of the idiocy of this particular version. Nobody uses a "hemisphere" because a catenary is stronger and gives greater internal volume. I'm surprised he isn't trying to patent stuffing . . .

And he's simply wrong about "critical damping".
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Old 2nd March 2014, 06:32 AM   #9
aaadirk is offline aaadirk  United Kingdom
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Ok guys thanks sofar. Looks like a not something to put time in.
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Old 2nd March 2014, 07:26 AM   #10
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That was a fantastic rant sreten! i enjoyed that.
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