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Paul doestn't seem to have a high opinion of patent attorneys... hehehe. Good point though - if you're not sure if someone else has already patented your idea / invention you might want to check that first on your own. When you actually go to draw up your patent, however, i suggest you get an...

I can certainly attest to them being very strict about their rules. My brother is a patent examiner for the USPTO. He examines only Biomedical patents - like implants and medical devices. But he tells me a lot about how he rejects patents with the most basic devices out there. It all depends on...

Thanks guys. I actually did see that thread there about the clone. I'm mostly in need of generic theory though - what frequency to use for the half wavelength, whether to line the walls AND stuff the line, whether the ending shape of the line matters, how large to make the initial mouth of the...

I'd like to start modeling my B&W Nautilus clones. I will most likely be making a three way design, rather than the four way of the actual Nautilus. This will consist of the big spiral TL for the bass unit that will not contain a terminus. The mid and tweeter will also be TL, though with a...

Daniel - you suggested that i check out tansmission line designs. This made sense to me initially. However, don't transmission line designs terminate in a port? These speakers do not appear to be ported - it would seem the port would have to be at the very center of the spiral. Is the port not...

Thanks Daniel, i'll start my research. Though i still won't be able to really start my models until i've selected drivers... I'm in the northern VA area. Chantilly to be more specific.

Joe - i love fiberglass too, which is why i want to attempt this! Unfortunately i'm a part owner of two small software companies, and time is something that i DON'T have a lot of. However, if i can get a few products we're working on out the door by the beginning of 2004, i'll probably take a...

Thanks Thomas! Those are excellent! Maybe i'll contact the guy that originally posted those pictures to see if he can give me a little more in-depth info.

I've done quite a few car audio installs, and i'd like to try my hand at DIY home speakers. I have a strong urge to make some sort of crazy enclosure. Right now i'm seriously contemplating trying to make a replica of the B&W Nautilus Prestige. Probably not the best idea for my first home speaker...