That size intrigues I 'll watch your progress.
IF I might suggest? 45 the 90 degree corners.
Easy to cut /fit (even now) and will get you most of the curved effect
IF I might suggest? 45 the 90 degree corners.
Easy to cut /fit (even now) and will get you most of the curved effect
Actually sharp corners are desireable here to act as low pass filters so that the mids and highs are removed and only bass escapes.
Too late, I've already closed up both speakers with gorilla glue. They're not coming apart now.
I was debating where to put the amp, either attach it onto the right speaker or build a separate enclosure to locate it remotely. A remote enclosure means tracking down some more wire, which I may be able to scrounge off of something else. I also need to dig in storage for something to use as stuffing. I'm trying not to buy anything else for this project. I might have a bag of polyfill somewhere or a scrap of mattress topper. I wonder how dryer lint or old socks would sound >D.
I think it's only about 58cm, estimating a line down the very center of a horn.
That's funny, I forgot to go down the center of the path. When I redo it, I get 60 cm. Hope that's enough. either way, I'm still interested in hearing your impressions as are many others I'm sure.
So hurry up would ya?
So hurry up would ya?
I got it all put together, but I think I messed up the amp. It sounds very distorted. It's almost as if the highs are filtered out completely and all that's left is a dull warbly mess. Seemed a bit shouty too, but that's probably the amp as well, not the speakers. Hopefully I just shorted out something easy to fix. But, I'm out of time to mess with it tonight.
60cm horn gives a 1/4-wave frequency of only 142Hz, so don’t expect too much bass. It will be good for mid bass and vocals..
The first I made was the 27" and it gave me ***** and giggles from the get-go. I hope yours encourages you to do another. A larger one so you appreciate these things. The 36" I made continues to amaze and I am hoping to fool around with the 48" ones so I get to feel the magic again.
Has anyone tried designing/making the Cornus with a circular face and back rather than square? Would it still work as intended? I’m thinking circles (especially larger ones) would have more WAF appeal than squares, particularly if they looked more art-like.
Simplified Micro Cornu
Cal, those pentagons are really cool. It looks like a lot of work to shape all those smooth curves. I bet they sound nice.
Craig, well every "W" in "WAF" is different. Mine prefers simple, sleek, ultra modern, straight lines, right angles... so squares are be better in my case.
I drew up a new version of the simplified (straight line) micro cornu. It uses a constant cross section and doesn't flare until the final turn/exit of the horn, so it packs a lot more length into the same space. It's just a tiny smidge over 110cm per horn, so should have a 1/4 wavelength tuning of about 78Hz. Again, this is completely unsimulated/modeled, and it has never been built, so use at your own risk.
Cal, those pentagons are really cool. It looks like a lot of work to shape all those smooth curves. I bet they sound nice.
Craig, well every "W" in "WAF" is different. Mine prefers simple, sleek, ultra modern, straight lines, right angles... so squares are be better in my case.
I drew up a new version of the simplified (straight line) micro cornu. It uses a constant cross section and doesn't flare until the final turn/exit of the horn, so it packs a lot more length into the same space. It's just a tiny smidge over 110cm per horn, so should have a 1/4 wavelength tuning of about 78Hz. Again, this is completely unsimulated/modeled, and it has never been built, so use at your own risk.
Attachments
With constant cross-section it is now a TL not a horn, and so really not a cornu-clone.
Cal, i suspect better response will be had in those pentagons if the little deflectors to smooth the corners were removed. You don’t want HF coming out the horn mouth. And in the labyrinth part is there a constant expansion… on 1st look it doesn’t look like a horn shape… how do they sound?
dave
Cal, i suspect better response will be had in those pentagons if the little deflectors to smooth the corners were removed. You don’t want HF coming out the horn mouth. And in the labyrinth part is there a constant expansion… on 1st look it doesn’t look like a horn shape… how do they sound?
dave
Yes, the Penthorn is a constant expansion.
I think you're right about the reflectors but it was together before that thought came to mind.
Those were made in 2013. They use the WR from CSS and a small tweet to top it off.
I think you're right about the reflectors but it was together before that thought came to mind.
Those were made in 2013. They use the WR from CSS and a small tweet to top it off.
The Penthorn is too short. Low end suffers.
That WR driver is a real workhorse. Probably the most robust driver of that size I've come across. It can get annoyingly loud. 🙂
That WR driver is a real workhorse. Probably the most robust driver of that size I've come across. It can get annoyingly loud. 🙂