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Get familiar with the reaction system: Introducing the Reaction System
Jaekels, Versabox design #4, NE180-4/CAT378...
Did the model 3-4 years ago now. Constructed xover from model, but I'm sure tweaks will happen.
Versabox shiny white like in Monoculus, swapping baffles and networks for these below. Saw some acacia butcher block cutting boards at Walmart that were inexpensive. Cut to size, chamfered edge, applied Danish oil, let dry, cut holes, and applied polyurethane. There were no voids in these, and the poly soaked in several times.
Yep, this is a series xover as I did not get a parallel with as few parts that I liked the look of.
and 2 others.
Comments
Those are going to be some wild and awesome looking baffles!
Neato!!
Those baffles look sick!
This is what the model and information looked like when I did it:
InDIYana Event Website
I thought the horn loaded CAT378 tweeter would push the AC rearward enough to get closer to the AC of the deep cone of the NE180-4. Real measurements to follow...
Of note, I will be mocking up another project at roughly the same time. The Acacia block baffles were thick enough that I could route the opposite side of the boards for another set of drivers. The NE 5-hole and CAT 3-hole being non standard hole patterns allowed for a standard hole pattern to be used in opposition. The other side will be called Itasca, named after a lake in Minnesota. It will use the Misco Bold North BDT-290 and BWX-6501 drivers.
The Jaekels have a small chamfer on the edge, and the Itasca have a small roundover, just for identification sake.
InDIYana Event Website
That's really a very nice F3 with a 180mm woofer and 15L box.
How is that 35 bump sounding though?
I would agree, Don, especially for a midbass. Subwoofer specific woofers can do it and lower, but not many in that box and tuning.
Baffle images with tweeters and midbasses just sitting in the rebates:
InDIYana Event Website
That was with the initial box sim in tow, and a larger box with lower tuning. It won't be there at all since the Versabox volume and tuning simmed above will get utilized.
No listening has been done as yet.
InDIYana Event Website
Looking again, if I may have misunderstood your meaning, Nick, and you meant the 3.5k tweeter bump, I have revisited the simulation since what is seen above and tweaked some values. Since I have yet to take real FR whoops, this will likely change a little and is why I have not posted the modeled schematic. The top-end can easily be level adjusted, and I'm hoping the suckouts and peaks are not that severe as shown in the simulation.
InDIYana Event Website
Ironically rebuilding new cab for those NE180's, though I have 8 ohm version that scored off fleabay, shew back in May24 I think. Re-pair with the seas titan 27tac's. In slightly bigger box since my small listening area and thus lower spl allows me to tilt toward bass heavy. Feel better seeing that 1.4k ish drop like I did, i'm not insane heh. Then noticed when tinkered with modeling it was sticky at that point, like boost coil, tilt down but the point stick. There are so many observations I'd wanna pick someone's brain on if could better articulate what I was asking. Luckily, here there's lots of free open thoughts and absent of crazy people dragging things into left field missing the point of discussion - so appreciate that.