Hi. For a tapped how en we have a number of internal bends in the horn path. Is it worth while to chamfer/round over/soften the corners?
It's a lot more work and it may actually make the path slightly shorter, so maybe it's a bad idea?
Any thoughts on this?
Kind regards TroelsM
It's a lot more work and it may actually make the path slightly shorter, so maybe it's a bad idea?
Any thoughts on this?
Kind regards TroelsM
Danley Sound rounds the corners of their TH and FLH internal pieces, though it does require more work.
I have always rounded internal horn parts and mouth exits, though never tested whether rounding the corners actually reduces "wind noise" or diffraction or turbulance effects, but it makes painting a lot easier, and makes me feel like the speaker will sound better, even if it doesn't 😎
Art
I have always rounded internal horn parts and mouth exits, though never tested whether rounding the corners actually reduces "wind noise" or diffraction or turbulance effects, but it makes painting a lot easier, and makes me feel like the speaker will sound better, even if it doesn't 😎
Art
If you're talking about doing something like putting 45's in the corners, it's not really needed in a horn designed for subwoofer duty. I think the same Tom Danley of Danley Sound tried doing it in a LAB12 and he said that it was not worth doing it.
Ultimately the efficiency of a subwoofer at the lower end of its passband is dependent on the net volume, so the lower the volume, the lower the efficiency will be.
Ultimately the efficiency of a subwoofer at the lower end of its passband is dependent on the net volume, so the lower the volume, the lower the efficiency will be.
I think the minimum net benefit of 45 deg turns is a slgiht stiffening of panels, but not by much. I do believe you'll reduce response ripple higher up with the reduction of cross sectional errors using 45s. I found this to be the case with the last tapped horn I built.
Round-overs ideally need to be a WL long, so in most horns it only increases/smooths its HF response, and if using simple plates, they ideally need to be angled such that they only promote forward air column movement, otherwise normally best to not use them and let the corner 'air pocket' act as a low pass filter, damping some/all of its HF distortion.
If wanting to strengthen outside corners, put the 45 deg plates on the outside.
If wanting to strengthen outside corners, put the 45 deg plates on the outside.
The corners can also be used for tuned/resonating absorbers. Like for example a helmholtz tuned to a problematic peak above the intended frequency range. But that would require a bit more work and measurements and may not be worth it.
Swedish No frills Audio that’s sadly no longer is operational did it to a huge back loaded horn called the catacombs. Scroll down for build pic and google translate the Swedish text. http://www.hififorum.nu/forum/pop_printer_friendly.asp?TOPIC_ID=82489
Swedish No frills Audio that’s sadly no longer is operational did it to a huge back loaded horn called the catacombs. Scroll down for build pic and google translate the Swedish text. http://www.hififorum.nu/forum/pop_printer_friendly.asp?TOPIC_ID=82489