What’s wrong with metal cones? Nothing. It’s the crossover (that’s the problem). Metal cones and “soft” cones require different treatment . . . most crossovers that seem adequate with soft cones simply will not sound good with metal.

All cones break up (for a number of reasons, and in a number of ways). All cones beam (some more than others). Soft cone drivers address the issues with internal damping and “controlled” decoupling, to greater or lesser success . . . and sometimes ...

Quote:
orginally Posted by johnnyrichards
"Now, the fun part - correlating the squiggles with what you like to hear"

Yep . . . problem is we generally don't measure what we hear.

There are, somewhat generally speaking, three frequency response curves that matter. The forward "on axis" curve that we typically design to is just a small part of what defines how a loudspeaker sounds, although it often comes close (if one ignores diffraction) ...

So I think I'm back on track with my upper enclosure mold and hopefully should be casting before x-mas, took a little longer than expected because I got sidetracked with the idea of making my own drivers, or at least part of one. Looking into making the motor for a conventional speaker is not in my means, so I'm looking into something along the lines of MBL or HEIL drivers using the motor from a cannibalized conventional driver, trying different "cone" materials over the past couple weeks ...

Okay, so I made a stupid mistake... got all the foam layers glued together and sanded down the rough edged, went to "seal it up", was going to use shellac but didn't have any so went to use some clear urethane, but of course it was out of a spray can and yes of course it attacked the foam... ruined... but now that I have the cnc process down, re-doing it is a snap, plus I thought that the shape was pretty generic anyways so thought I would update it.
So here's what the new form ...

Was hoping to be further along by now... actually finished by now, but It took a while to figure out the whole cnc process, I was going to update my machine and ordered parts, but they where taking forever to come in and some of the parts were wrong, (in fact I'm still waiting for parts) but I got it working good enough to finally go ahead.
This is the plug for the main body of the upper enclosure. For reference the enclosures behind it have cutouts for 8" woofers(though these are not ...