Whizzer patent...

moray james · 9th November 2006, 07:20 PM

found this last night. U S Patent # 2004 0197998

planet10 · 9th November 2006, 07:51 PM

Can you try again on tha patent number -- it finds an application for a "split-gate flash memory cell"

dave

moray james · 9th November 2006, 08:11 PM

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

2) 20020102006 Whizzer cone for a loudspeaker

tvi · 9th November 2006, 08:17 PM

US2004197008

lgreen · 9th November 2006, 08:27 PM

Technically its not a patent but rather a patent application that got published.

T11 · 21st November 2006, 09:40 PM

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

planet10 · 22nd November 2006, 01:29 AM

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?

dave

moray james · 22nd November 2006, 01:49 AM

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.

planet10 · 22nd November 2006, 02:24 AM

Quote:

Originally posted by moray james
Duct Seal

should be part of every diy speaker builders toolkit.

dave

moray james · 22nd November 2006, 02:59 AM

nt.

9th November 2006, 07:20 PM	#1
moray james diyAudio Member Join Date: Aug 2003 Location: Calgary on the Bow	Whizzer patent... found this last night. U S Patent # 2004 0197998 __________________ moray james

9th November 2006, 07:51 PM	#2
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	Can you try again on tha patent number -- it finds an application for a "split-gate flash memory cell" dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

9th November 2006, 08:11 PM	#3
moray james diyAudio Member Join Date: Aug 2003 Location: Calgary on the Bow	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 __________________ moray james

9th November 2006, 08:27 PM	#5
lgreen diyAudio Member Join Date: May 2003 Location: San Diego, USA	Not a patent Technically its not a patent but rather a patent application that got published. __________________ Retired from DIY (2010) but still lurking now and again. My DIY audio projects- PartTimeProjects.com.

21st November 2006, 09:40 PM	#6
T11 diyAudio Member Join Date: Sep 2005	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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9th November 2006, 08:17 PM	#4
tvi diyAudio Member Join Date: Apr 2001 Location: Moonee Ponds, Vic, Australia	US2004197008

22nd November 2006, 01:49 AM	#8
moray james diyAudio Member Join Date: Aug 2003 Location: Calgary on the Bow	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. __________________ moray james

22nd November 2006, 02:59 AM	#10
moray james diyAudio Member Join Date: Aug 2003 Location: Calgary on the Bow	Ahh Men !!! nt. nt. __________________ moray james

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