Simple Tapped Horn Tutorial using Hornresp - Page 4

Just one driver per enclosure, but it is probably best to use these in pairs. The Tang Band W6-1139 also works according to the model, but not quite as well as the Anarchy. Total volume is closer to 3 cubic feet than I wanted, but there is 1/2 a cubic foot of wood inside the cabinet as dividers for 13.5 feet of tapped horn all folded up in there. With 1/2" material it is 20.125" X 30" X 8.25" external, and there is zero wasted space inside.

I will post the modeled predictions and comparisons to the actual measurements when I am done. If worthy, rest assured I'll post drawings, plans, details, and a cutlist so that anyone else can play along at home. If my measurements are not what I expected, I will post what I did and what I found so that we can all work together and try to figure out what went wrong so that others do not make the same mistakes.

I have not posted much about this yet because I do not consider my designs done until they are built, measured, and proven. I don't want to waste other people's time with something that may not work.

Width is up to you.

Pretty much the only criteria on setting a width is that the driver needs to fit. I like at least an inch extra, but I have cut things a little closer.



There is about 1/8" of wood left outside the rabbet on this one. As it was, the driver was a snug fit depth-wise, so I needed to design the horn a little bigger.

As far as smoothing things out with multiple drivers - Yes - to a degree would be my qualified answer. I am a big fan of multiple smaller drivers for music applications. For home theater, I have yet to find a small driver that will do the sub-20 Hz stuff at reference level without running into excursion issues, even with 4 in a cabinet. Most run out of gas at around 30 Hz. For these applications, a single larger driver is usually a better choice. The little ones just can't do the lower stuff at high enough SPLs to make it worth my while. Additionally, when you're using 4 of them, the cost adds up pretty quick, and may wind up more expensive than a larger driver that is better suited to the job.

By the way - HornResp now models parabolic flares, which is what 99.99% of us wind up building regardless of what we actually modeled. Select it the same way as conical, just choose "Par".

It will get complicated to keep track of what design is where, but it is easy to do. Just copy all the files into another directory, like C:\\Hornresp2. I do this all the time. I've had 4 instances running at the same time, plus akabak...

Yeah, I'm not well....

12 steps to the fridge, get a beer. 12 steps to the desk, model more horns...repeat. Is that what you were thinking of?

I had to put all four cores to use....

As far as the number of open sims in AkAbak??? That gets ugly fast. At least in a virtualized environment things crash gracefully......