$6800./pair or maybe ~ half that from Athos would be my only options. Are they now in use? Drivers?
Do they sound more spacious than smaller versions of similar horns you may have heard?
What was your process for coating the gyroid infill with the casting resin? I'm printing an ES-600 and considering filling the horn with resin, will probably use bondo spot putty and filler paint for the outside of the horn.
bpark99, I drilled big enough holes in the 3d printed parts (not with a normal drill bit - that ripped the layers apart; I used a conically shaped step-drill-without-steps). Then I filled in some casting resin and closed the hole with masking tape. Then I moved around the part every half hour or so until I knew the resin would harden (left some resin in the mixing cup). Not rocket science.
These days I'm not sure if all that is really needed. Print wil six wall layers - that should be plenty stable and resonance free.
These days I'm not sure if all that is really needed. Print wil six wall layers - that should be plenty stable and resonance free.
Great project! I also have experience with 3D printing a horn. My thought about your horn is this: a lot of printing has nothing to do with the horn contour itself. To save on countless hours of printing and filament, wouldn't it be a good idea to print just the horn contours (that what counts soundwise) and use cheaper materials like concrete to make it a solid object that you can mount on top of a box?
You could do that, yes. I played around with that and often the minimised contour needed lots of additional support structures to print properly; and in the end that didn't save as much time for printing (or took even longer to print). Swings and roundabouts...
