Transmission-line speakers

[Everett T]

The drawings note w/ tweeters. Not that into it, but is it not to meant without?

I'm not sure, it's why I asked. The top end with an 8" driver (most) won't look so pretty. I'd rather a two way in a TL enclosure than a single driver personally.

 

[Salt]

You can go for a, as example, Visaton 8" fullrange with a TML sufficiently, if the room supports the drawbacks of directivity in higher frequency range (or distance to speaker as well as toe in compensates it).

 

[MartinV56]

I'm not sure, it's why I asked. The top end with an 8" driver (most) won't look so pretty. I'd rather a two way in a TL enclosure than a single driver personally.

A dome tweeter with 1 or 2mf capacitor is recommended

 

[Head_Unit]

Nautilus (snail) is more marketing than technical advance in speaker design, with no advantage over the simple closed box.

Having been co-opted into Marketing frequently I'll partly agree. But isn't at least part of the Nautilus thesis (and others over time) that the internal arrangement of baffling/shape and absorption is superior to a plain parallelepiped? I would sure think so from an acoustic intuition point of view. The rear sound physically cannot just bounce off a parallel rear wall and re-radiate through the cone.

 

[MAB]

Having been co-opted into Marketing frequently I'll partly agree. But isn't at least part of the Nautilus thesis (and others over time) that the internal arrangement of baffling/shape and absorption is superior to a plain parallelepiped? I would sure think so from an acoustic intuition point of view. The rear sound physically cannot just bounce off a parallel rear wall and re-radiate through the cone.

There are really cheap ways of making the walls non-reflective. Jute mat does the trick really well. So does a diffuser.

If the Nautilus design does as good a job as simple methods, fine. But the B&W look horrible.

 

[Head_Unit]

the B&W [Nautilis] look horrible.

Better watch out for assassin snails, they're coming for you!
I gotta say, beauty is in the eye of the beholder, but the Nautilis definitely look expensive which can have a certain appeal. Or you could get http://www.norh.com/Norh_Loudspeakers/Norh.html
instead...

 

[Vladimir Filevski]

Having been co-opted into Marketing frequently I'll partly agree. But isn't at least part of the Nautilus thesis (and others over time) that the internal arrangement of baffling/shape and absorption is superior to a plain parallelepiped? I would sure think so from an acoustic intuition point of view. The rear sound physically cannot just bounce off a parallel rear wall and re-radiate through the cone.

For higher frequencies, yes - it is a good solution, But we are talking about low frequencies, where wavelength is very large, so there will be reflection from the end of the snail tail.

 

[Vladimir Filevski]

There are really cheap ways of making the walls non-reflective. Jute mat does the trick really well. So does a diffuser.

Not for the low frequencies we are talking about.
Ideal diffuser reflects back whole sound wave, it just diffuses/spreads back a band of the frequency spectra,

 

[Head_Unit]

For higher frequencies, yes - it is a good solution, But we are talking about low frequencies, where wavelength is very large, so there will be reflection from the end of the snail tail.

Mmmm...yes, very good point! ...then again at very long wavelengths is it really reflection or pressurization? I guess first reflection then pressurization. Anyway less upper frequency crud coming through I would think.