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Spreadsheet for Folded Horn Layouts...
Spreadsheet for Folded Horn Layouts...
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Old 3rd December 2017, 11:34 AM   #311
Dhp507 is offline Dhp507
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Quote:
Originally Posted by Brian Steele View Post
What do you mean? Give an example of what you're trying to do..
I am trying to setup 2 drivers in the same enclosure. As per my HR model....
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Old 3rd December 2017, 09:32 PM   #312
Brian Steele is offline Brian Steele  Grenada
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Originally Posted by Dhp507 View Post
I am trying to setup 2 drivers in the same enclosure. As per my HR model....
The workbooks won't display two drivers, but you should be able to adjust the dimensions of the box to fit two drivers.
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Old 3rd March 2018, 04:10 AM   #313
Brian Steele is offline Brian Steele  Grenada
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An update to the "Cyclops" workbook....

I've "improved" the folding at the mouth end of the horn, using a proper flare rather than a stepped section. I've also in the sim used the same driver as that used in the original Cyclops and dimensions similar to the CBE model (I rounded off to the nearest 1/2").

I think the improved layout of those fold should give a slightly better low frequency performance than the original CBE 18, which IMO wastes a bit of valuable box volume in the front by using a mouth that's too wide and a fold that does not take best advantage of the available space.
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Old 3rd March 2018, 03:55 PM   #314
BP1Fanatic is offline BP1Fanatic  United States
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Nice layout Brian!
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Old 4th March 2018, 03:43 AM   #315
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Old 4th March 2018, 11:25 AM   #316
LORDSANSUI is offline LORDSANSUI  Brazil
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Quote:
Originally Posted by Brian Steele View Post
An update to the "Cyclops"
Hi Brian,

Once you have a lot of experience building and simulating, what would be you theoretical assessment for the "Cyclops"? the applications, pros and cons, etc.
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Old 8th March 2018, 02:45 AM   #317
Brian Steele is offline Brian Steele  Grenada
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Default An alternate MLTL

Here's a spreadsheet for an alternate "MLTL" folding. Lots of subwoofers are built with shelf vents that extend along two sides. Looks like it doesn't take much to convert them into MLTLs...
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Old 8th March 2018, 02:53 AM   #318
Brian Steele is offline Brian Steele  Grenada
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Default Boring straight TL

Layout for a boring straight TL. This is probably the worst way to build a TL, but it seems very popular with the car audio crowd, probably because of all the "ringing" that likely takes place at or near the resonance frequency when you use a car audio driver to drive it. Anyway, here it is.
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Old 8th March 2018, 02:57 AM   #319
Brian Steele is offline Brian Steele  Grenada
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And here's a straight TL with an alternate fold. Unlike the usual straight fold used by the car audio guys, this fold allows the driver to be offset enough on the baffle to eliminate the dip caused by the first vent resonance.
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Old 8th March 2018, 03:07 AM   #320
Brian Steele is offline Brian Steele  Grenada
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Quote:
Originally Posted by LORDSANSUI View Post
Hi Brian,

Once you have a lot of experience building and simulating, what would be you theoretical assessment for the "Cyclops"? the applications, pros and cons, etc.
A good question. It's a big box that's tuned high because of how the path is laid out in the box. I'm tempted to widen the box a bit more and sim it with a 21" driver to see if the lowest resonance frequency can be moved closer to 30 Hz with the response remaining relatively damped. Best use is probably permanent install because of the size and weight.
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