posted
For many years i dream to build a very big driver, like 24 or 36 inch, but the big problem is that i dont know how i could find the ideal magnet...
Recently i got a motor structure used to move the head of a old hard drive( big like a freezer!! you know..) The magnet is about 80 to 100 pounds and 11W x 8L x 6H inch.I used a HP gaussmeter and i measured 18 000 Gauss(1,8 Tesla !!) where the magnetic field cross the coil!!
It also include a big 4 inch dia coil by 5 inch long(just the wire..!) maybe the xmax can easyly be 1,5 to 2 inch..It's also a dvc 1,2 ohms each.. Can i'll get 5 inch xmech p to p?!.. and does it will be able to handle the kW per vc ??!! ;-)))
Now i am planning to desing and build the rest: it mean... frame (solid!!) cone, spider, surround.. etc..
I think i'll need your help or idea to suggest me the better material i should use for spider and the cone.
Please help...
[ 10-01-2001: Message edited by: Doctorbass ]
-------------------- Street A "not legal but not outlaw!" Score in my integra: -152.34 dB 51Hz TL sensor -157,1dB 51Hz AC mic
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Posts: 643 | From: Quebec city | Registered: Mar 2000
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posted
Well, doctor, I've been doing lots of thinkinga bout reasonable 24+" driver sizes and have several thoughts on them.. As for the spider and such, perhaps a conventional spider is not fitting for the application ? (Hint hint)
Nor, would I suggest using a conventional surround.. Perhaps something that doesn't roll but instead stretches and couples to the area of the driver?
ShadowStar
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Posts: 2578 | From: Somewhere In the Northeast | Registered: May 1999
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posted
Hey Shadow I have been thinking about trying out a new suspension system for sub applications...what kinds of things are you thinking? I have been wondering how ahrd it would be to design a system where the cone is controlled linearly by a regular spring, and laterally by some sort of guide system. Any thoughts? Also, do you know any good materials which may act as a good surround amterial for the stretching idea? Thanks, Ash
-------------------- ****************************** ****************************** Posts: 1130 | From: Los Angeles, CA | Registered: Aug 2001
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