Any fullrange work in all box types?

[davidallancole]

I everybody,

I plan on picking up a few tools and MJKs MathCAD sheets over the next few months so that I can spend the winter building boxes different types of boxes.

What I am wondering is, is there any one fullrange speaker that seems to work acceptably in all the different box types? I mean something that performs acceptable in a sealed, vented, transmission line, horn (BIB), and MLTL? The CSS FR125 seems to have a lot of different designs out there for it in most of the different types of boxes. Is there anything else out there anybody can think of?

Thanks.

[gmilitano]

Hi David,

On the Prairies, you are supposed to build speakers in the summer and do electronics in the winter !

The Fostex FE127E is a good choice as well and less money too. It can work sealed, small bass reflex, T-Line and likely a few more.

Cheers,
Gio

[davidallancole]

On the Prairies, you are supposed to build speakers in the summer and do electronics in the winter !

Gmilitano you should have told my old man that one! I guess I thought I could do that kind of thing in winter due to the many hours a day I would be holding boards while dad cut them, all outside in the blizzarding snow!

Thanks for the hint there on the FE127E. I see there is a lot of things one can do with that speaker. Their is a BIB design up on Godzillas site and a MLTL as well.

Thanks again.

[chrisb]

a few designs for the FE127E that I quite like:

aperiodic vented:
http://www.planet10-hifi.com/fonken.html

mass loaded (folded) voigt pipe:
http://homepage.mac.com/tlinespeaker...27-MLV-1v0.pdf


call it a "horn/TL hybrid" or whatever you like - it quite nicely works, and the supra baffle is definitely worth the extra effort: http://www.planet10-hifi.com/tom-zHorn.html

[planet10]

FE127 has been put into the Frugel-Horn with reported success, and works in a Metronome.

dave

[davidallancole]

Thanks for the help guys. Any more anybody can think of, maybe a little bigger in size?

[GM]

Greets!

Basically, you want a fairly low Fs with a Qts in the 0.25-35 range and a decent size Vas for the frame size, so the Fostex FE167 or 207E are popular choices that 'fill the bill'.

GM

[chrisb]

Originally posted by davidallancole
Thanks for the help guys. Any more anybody can think of, maybe a little bigger in size?

well then:
for a monopole, Harvey or Mikasa from the would be worth looking at

http://homepage.mac.com/tlinespeaker...ans-030107.pdf

http://homepage.mac.com/tlinespeaker...map-070707.pdf

if you have the budget and physical room for a bipole, the Metronome sounds great, and once you get the angles set right on your saw, a very easy build.

http://www.frugel-horn.com/metronome.html

[davidallancole]

Thanks guys.

Those metronomes look nice. How far away from the wall does a bipole need to be? I can hand around a foot, but any farther and the girlfriend will kill me.

[planet10]

Originally posted by davidallancole
How far away from the wall does a bipole need to be? I can hand around a foot, but any farther and the girlfriend will kill me.

To really be at their best probably a foot plus, but as a counter to that we were listening to Scott Dunn's BiFonkens on Friday night and they were sited about 8" from the wall (althou at a bit of an angle) and sounded FINE

And with Mets -- especially if made from plywood as recommended -- they are not hard to move a bit further out for really serious listening.

dave