For 100 (150?)-1k (900?)
Can I do better than:
https://volvotreter.de/downloads/Conical_77Hz_Midbass_1.0.pdf
A bit taller (1,3m?) would be OK - folded?
HiFi is goal.
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Can I do better than:
https://volvotreter.de/downloads/Conical_77Hz_Midbass_1.0.pdf
A bit taller (1,3m?) would be OK - folded?
HiFi is goal.
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Maybe this?
https://inlowsound.weebly.com/diy-100hz-midbass-horn.html
Other suggestions are welcome 🙂
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https://inlowsound.weebly.com/diy-100hz-midbass-horn.html
Other suggestions are welcome 🙂
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look at John Inlow's 100Hz and 135Hz horns and for a common 12" driver a 12PE32 will just about do it
http://www.inlowsound.com/
come to think of it my baby University Classic horn with a low Q Eminence 10 did pretty well for that range
It was built for me by Triticum audio (Jesse Brunner) as
I don't think I could do those compound thraot angles
https://www.diyaudio.com/community/threads/baby-university-classic-folded-midbass-horn.295730/
http://www.inlowsound.com/
come to think of it my baby University Classic horn with a low Q Eminence 10 did pretty well for that range
It was built for me by Triticum audio (Jesse Brunner) as
I don't think I could do those compound thraot angles
https://www.diyaudio.com/community/threads/baby-university-classic-folded-midbass-horn.295730/
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I'm hoping for a 38cm ATH r-osse-png.1029041
with a https://www.bmsspeakers.com/index.php-172.html?id=5530nd_overview0
But maybe it is to much to hope for... yes...
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with a https://www.bmsspeakers.com/index.php-172.html?id=5530nd_overview0
But maybe it is to much to hope for... yes...
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I think the horn choices are out there. (Fred--didn't you run Bruce's 100Hz fronthorns?) I gotta believe Art has solved this problem a few ways, too. I remember Dennis (djk) ran 12pe32's to meet 1" horns in both his manta-rays and in that push-pull lascala-ey thing he brewed. I think that bms makes it all worth a hack, but I've not heard them. Pro people live this stuff every day so it probably comes down to how big and how loud and what filtering/eq to blend to the rolled-back HF pattern and talking to them. Please keep us posted.
This should be quite a challenge (as in it's a sign if it isn't 😉 ), so you need to lay out and set your priorities as your entire design should depend on what you're prepared to accept.
A straight hypex or expo (maybe conical but probably a compromise) horn with B&C 8pe21 and a big mid horn (600 flare or lower) and a medium format 1.4 or 1.5" driver will work. It could be hifi. I always liked the 800 cycle crossover point but the B&C 8 will work to 1K in a straight horn.
Yes I probably will have to beef up the CD to 1,4" and sacrifice a bit above 15k - that would be OK.
Fiddleing with Hornresp... 1m long would be OK. Its more to this software than initially meets the eye... I feel... insecure 🙂
Is there in general a big penalty to make one turn (fold?) of a horn instead of a straight?
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Fiddleing with Hornresp... 1m long would be OK. Its more to this software than initially meets the eye... I feel... insecure 🙂
Is there in general a big penalty to make one turn (fold?) of a horn instead of a straight?
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It depends how, where along the horn, where in the spectrum. Some bends should be reflected and some guided. Covering 100Hz may run into size limitations or shape constraints, overcoming some of which may run into the 2kHz limitations, such as maintaining a clean wavefront through a larger horn while arriving at a fixed directivity.
Never tried it that high. My old midbass horn was 50-400 and had one gentle 90* bend with a 2m axial length. The new one is a redesign with different driver but very similar.
I'd be reluctant to go much higher than that, though apparently the Show Horn is OK to 500 and has more folding though none are more than 90*.
It will be very hard to cover 100-1k in a single horn and folds are going to be an issue at 1kHz. My midbass horn does 100 - 500Hz with a 15" driver but the driver is exceptionally well suited to horn use. For 1kHz you will need 12" or smaller drivers and phase plugs. You could try plugging drivers into the formula of this paper to see what the upper and lower bounds are on frequency response:
http://www.xlrtechs.com/dbkeele.com...Preprint) - LF Horn Design Using TS Paras.pdf
Here are some more horns for inspiration:
https://centauriaudio.com.au/diy/
http://www.xlrtechs.com/dbkeele.com...Preprint) - LF Horn Design Using TS Paras.pdf
Here are some more horns for inspiration:
https://centauriaudio.com.au/diy/
I run Hornresp in quarter spaxce / pi with good faith. I think loading has priority here. I regard myself as quite math-challenged so I will need something like Hornresp etc to help me get to a design. Drawings would be nice.
I think I will prioritise on the upper band if pressed BW wise.. 10 inch no problem... 8 as well - I don't aim for VERY load - but rather, "grip". I do have a couple of different solutions at hand for -150 Hz.
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I think I will prioritise on the upper band if pressed BW wise.. 10 inch no problem... 8 as well - I don't aim for VERY load - but rather, "grip". I do have a couple of different solutions at hand for -150 Hz.
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