I've been looking for some 8" to build a Voigy pipes
for some time: started out leaning toward Goldwood, then
Pioneer. There was a tip that these 8 inchers were being
sold in pairs on Ebay for $10. EventuallY I got the base
bid in and am waiting on shipment.

But the speaks come with no information. The seller
recommends a nearfield or studio monitor config. I'll
have to see how they sound when they get here.

Anyway, just for discussion, here's the link I have.

• Roland piano 8" speakers sold on eBay

Below is the image of one that is 72" overall.

I have another (harder to grab) that's 74" so both are
pretty close. The problem with one of these is that
the driver used has been discontinued.

I also have considered the ide aof mounting the driver on the
slant side and using an angled piece at the port terminus... or
a curved piece which is bent and snapped into place.

Driver mounting should be at 40" for the 74" design,
but if mounted on the slant side, other factors may apply.

A recent _audioXpress_ has a series on why the front
pf speaks should be slanted, so I wanted to apply the concept
to the Voigt and do both techniques at once. I don't know
if this is a good idea but they seemed to go together.

• Voigt Pipes

Maybe it's a phase I have to go through. :-)

From reading I seem to recall that this design is pretty
forgiving and is good with inexpensive drivers. That was my reason
for concentrating on the unusual design. If, indeed, you made the
top less pointy, I'd say it'd be an MLTL.

I am putting a pair of those (MLTL) together-- much smaller
format design -- based on some numbers from GM at Full Range
Driver Forum. These use the FE127e from Fostex. And I can
make them out of 70 cent shelving from the Farm and Fleet.

Before anything, I want to put my line array together
as least a test build.

Thanks for the help. I am not at the stage of doing
from-scratch designs with CAD and spreadsheets. I'm learning
my tools yet. It is pretty slow going.

While this discussion is going, if I made the bottom
square to the base and just moved the taper up past the
vent opening, how would that change things?

There would be a curved piece snapped into place
at the rear to the height of the vent opening. Something like a
piece of rubber floor tile. (?)

(No speak delivery yet today)

http://www.geocities.com/rbrines1