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Old 9th November 2006, 08:20 PM   #1
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Default Whizzer patent...

found this last night. U S Patent # 2004 0197998
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Old 9th November 2006, 08:51 PM   #2
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Can you try again on tha patent number -- it finds an application for a "split-gate flash memory cell"

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Old 9th November 2006, 09:11 PM   #3
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Default Sorry these are Application numbers...

PUB. APP. NO. Title
1) 20040197008 Whizzer cone for a loudspeaker for producing uniform frequency response

2) 20020102006 Whizzer cone for a loudspeaker
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Old 9th November 2006, 09:17 PM   #4
tvi is offline tvi  Australia
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US2004197008
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Old 9th November 2006, 09:27 PM   #5
lgreen is offline lgreen  United States
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Default Not a patent

Technically its not a patent but rather a patent application that got published.
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Old 21st November 2006, 10:40 PM   #6
T11 is offline T11  Slovenia
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Default it works also

I used this when tried to modify fe206e by all means. I tried Morays tweak, some dammar and shellac coating (with my quite unique method, seem to work...). Nevermind the damping of the magnet and basket, I wanted more of the uniformity and substanec in the sound (not that the lower frequencies were lacking (I used them in front tractrix horn). I found these patent but as I recall it was about tubes. maybe I forgot, anyway it worked- highs are now less strident and sound is more together. What you also get is when wheezer gets smaller some of the nastiness from the main cone comes up-then dammar and shellac came in... Anyway mids more open, glare tamed with shellac+dammar, highs smoother, sound is more natural and less sterile. Recommend.

!!
T
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Old 22nd November 2006, 02:29 AM   #7
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Default Re: it works also

Quote:
Originally posted by T11
Anyway mids more open, glare tamed with shellac+dammar, highs smoother, sound is more natural and less sterile. Recommend.
Can you describe exactly how you did this mod?

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Old 22nd November 2006, 02:49 AM   #8
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Default Duct seal deal...

don't discount the impact that a few pounds of Duct Seal will have on your driver, it's not just in the bass. Air flow in and out of the basket and flowing around the magnet structure can be inproved a lot. The DS damping will eat up a lot of stray resonance. It can be impressive. Try it on the back side of a sealed back tweeter. The effects are far reaching. Regards Moray James.
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Old 22nd November 2006, 03:24 AM   #9
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Default Re: Duct seal deal...

Quote:
Originally posted by moray james
Duct Seal
should be part of every diy speaker builders toolkit.

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Old 22nd November 2006, 03:59 AM   #10
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Default Ahh Men !!! nt.

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