Funny thread on the Rockford forumn.
http://www.rockfordfosgate.com/forum...23&whichpage=1

I still don't see how the snail shell is any different than a well designed horn-loaded enclosure. Horns have the benefit of being able to basically tune themselves over a broader range than a regular ported box which tunes itself at one frequency. They are also generally many more dB efficient than a ported box. IMO they are more of a horn in nature than a TL but get that Wizard kid to admit that. Impossible.

^It strikes me the same way, as a clever horn loaded system. It's description is not unlike the B&W Nautilus... hopefully it works that well

From what I can gather on the companies website (their forumn) it isn't a TL or Horn Loaded design, it looks like a ported box with a port that doesn't have a constant width. for example the port would seem to have a width of say (I am just making the actual numbers up) 3 inches at the throat and 5 inches at the mouth. It can't be horn loaded if the sub is on the baffle and there is nothing in front of it.

Also if you go to the multimedia section and look at some of them they sure don't seem like much of SQ boxes to me, and they make alot of excuses on why their SPL is lower than the others in the competitions they filmed.

Also the part about "servoing" two subs together is baffling.

Sure it can. A rear-loaded horn has a continuously expanding throat area that starts behind the woofer and extends to the outlet, usually of which is on the same plane as the speaker. A chamber is built behind the woofer, like a typical box, then a small throat lets the frequences out of that chamber to a mouth that is larger in area.

Here are some links:
http://www.speaker-online.de/bauen/naumann/
http://www.atatan.com/~s-ito/sp/makizou.html
These are pretty funky http://www.carfrae.com/pages/frameset.html
http://www.spnet.ne.jp/~hasehiro/

I got lots more. Some really neat stuff out there. My theory is the powered4sound kid came upon one of these little-known designs and capitalized on it. Here ia a great diagram complete with dimensions:
http://www.plasmatweeter.de/images/jericho/horn.gif

[ June 16, 2004, 11:36 AM: Message edited by: SUX 2BU ]

Threads on the "snailshell" remind me of another premade vented design from about 8 years ago that was the be-all and end-all. I can't even remember the company that made them... [img]graemlins/freak.gif[/img]

this one?? http://www.decware.com/whorn.htm

[. It can't be horn loaded if the sub is on the baffle and there is nothing in front of it.

incorrect, you can have folded horns that have the woofer mounted on baffle, with a tuned horn that can wrap around the top, bottom, or sides, check out team shadows dodge shadow, a perfect example of a horn that the woofers are mounted on a baffle and the horn wraps around the side [img]tongue.gif[/img]

The way I see the diagram that Sux posted I don't see a "real" horn, to me a real horn has the driver mounted in the throat and the enclosure flares from there to a mouth.

That box that is posted looks to me like a ported box with a varying port diameter.

Anyways the thing that really got my attention is that two drivers couple to "servo"?

i would define it as a transmision line with the port being that long
its somebody trying to reinvent the wheel
it was posted for a long time on termpro
now i haven't seen any posts on it for a while

That's not it - although that box is definitely one on my long list of "gotta do that one day" projects.


The boxes I mention "appeared" to merely be largish vented boxes with oversize slot ports. They were put together with rabbets and dowels in lieu of screws/nails. Of course the company and it's followers swore up and down that there was some funky resonance/alignment thing going on and it was no ordinary vented box - much like the Snailshell...

Lol, You SPL guys and your funky boxes.

I've never even heard of a snail shell box.

What ever happened to a REAL big box, 40 amps and a bunch of 15's...now with the box designs you guys have, your hitting 150 with a 10. WTF?

That's progress :D

i built a horn box,but it tuned too high.
they are quite difficult to build properly.
i have a speadsheet of 100 measurements to be made for every cm of length.
it was actually a tectrix design,but it also takes 6-8 cubic ft of air to make it work with my car.
the folded horn i built wound up peaking way over 100hz.
a horn can be very efficient but WILL use an enormous amount of room.
for a given space, a conventional ported box will be louder,and way easier to make correctly.
there is so many ways to make a terrible sounding horn.(been there , done that :( )
the single driver webpage is great,a halfsack,couple sheets of mdf,and a table saw,can keep you entertained for days :cool:
good luck to any that dare try a tectrix or exponential design. May the Schwartz be with You [img]tongue.gif[/img]

I attempted an ABC once...I think it hit about 153 at 250Hz lol, it was REAL bad....really really loud at high frequencies but lows were horrid.

Uhh... the SS is not an SPL box. It's intended design was for SQ. It's supposed to have a very flat responce.

It just also happens to be very efficient for a SQ box.

(this is all stuff that I've heard.. never seen one of these boxes before)

Another thing, they talk about how great it is for SQ, yet on all the videos they are playing gangsta rap, they don't even know what SQ is. Also they get beat at SPL comps and make excuses. Seems like a waste of time to me.

^ Exactamundo. All they have is the hype they pitch on their videos. If it's so incredible for a pair of 6.5s, why don't they go balls out and do a pair of 15s or something and rock everybody? Because the design ain't all that ;)

What's loud to the ear, is not always loud at the microphone/sensor. :cool:

i reasearched horns when building our box. all ifound is that there are a millions different tyopes and that they are all custom jobs that take a long time to build. we based our box on a folded horn. a horn guy wuill laugh at our box, a vented guy would laugh at our port. either way i designed it to do a specofic job and it does it for us. it hits a pretty ok number, but if you ask people that hear music thru our box , they would say it sounds pretty loud all around. no its not perfect and i didnt say it was. but we looked into the snail shell and the wicked one, klipsche, and every other horn out there, i even emailed a few diy and got some insight into why and how come, and why not. I built it with a horn in mind and it pounds great, at least i think so. i wil tell you this the snail shell, would have been our second choice, and if you ask defro, we are planning on building a big ass horn this year. i mean big ass. i can keep you posted if you like. i was hoping to start a "camp horn" jus need to find me a vehicle (any oner wanna donate their vehicle to camp horn?)

[ June 18, 2004, 10:33 PM: Message edited by: Team Shadow ]