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Foam Core Board Speaker Enclosures?
Foam Core Board Speaker Enclosures?
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Old 13th December 2012, 01:36 AM   #651
planet10 is offline planet10  Canada
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Foam Core Board Speaker Enclosures?
Quote:
Originally Posted by klampykixx View Post
Could the spiral in the cornu be squared out
There is one in one of the Fostex speaker enclosure brochures... i couldn't quicky find it.

dave
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Old 13th December 2012, 01:46 AM   #652
planet10 is offline planet10  Canada
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Foam Core Board Speaker Enclosures?
Quote:
Originally Posted by xrk971 View Post
Luck? Yuck? Muck?
Puck!!

We could call the Circular version of the Fibonacci Spiral Cornucopya "The Puck"

dave
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Old 13th December 2012, 02:18 AM   #653
klampykixx is offline klampykixx  Australia
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Quote:
Originally Posted by xrk971 View Post
Klampy,
When you say it has to sound similar to the horns you play on, are you referring to the compression loaded driver horns used for rock band type stage speaker boxes? If that is the sound you are after, I have to say that foam core can be used to make a horn just like those in the speakers you are talking about (curves and all on a tractrix) and mount it to a compression driver. Is that what you are talking about?
Xrk971
kinda... i guess ultimately im not actually sure what i really want... i say i want it to sound like PA gear, but then PA gear is generally coloured somewhat... so then, to go flat response would probably be the preferred option.

when i was living at my parents place, i was using my PA speakers to produce on, and i still believe that was when the recording sounded as close to the reproduction as i was going to get/or have gotten. since then, i have tried numerous different sets of Hifi speakers to produce on, and its just not the same.

this is my setup for producing this minute, a pair of Sony Hifi (i think 7inch) and a pair of JVC hifi. (i think 6inch) between the two pairs (attatched in parallel to the amp) they make a nice sound. but its still very bass heavy in the sound they make, but when i play the recordings on other systems, the bass is well overpowering on the recording also... a few weeks back i attatched an EQ into the system, but now i feel like it just sounds muddy instead.. the room is crap, and the speakers just sound dull.. but, in saying this, maybe my ideals for what it should sound like have changed too, since its been nearly two years since i last got right into the vibe.

Click the image to open in full size.
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Old 13th December 2012, 02:21 AM   #654
klampykixx is offline klampykixx  Australia
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sorry for the tangent, but im wondering if the cornucopya spirals would give me the sort of close range clarity and bass impact im looking for, without going overboard on the any set range of frequencies which would inturn colour the produced music. (i do dance music just incase we werent sure.)
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Old 13th December 2012, 02:21 AM   #655
KyleinCowichan is offline KyleinCowichan  Canada
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Quote:
Originally Posted by planet10 View Post
Anyone want to go at this one? Only one horn length, could be a pentagon, or a circle. Mouth needs some detailing

dave
What size drivers are those meant for Dave?
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Old 13th December 2012, 02:47 AM   #656
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
Quote:
Originally Posted by planet10 View Post
Anyone want to go at this one? Only one horn length, could be a pentagon, or a circle. Mouth needs some detailing

dave
What is the path length, and is this a Fibonacci expansion rate? It doesn't look fast enough, that is, expansion at 1:1:2:3:5:8:13.
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Old 13th December 2012, 02:52 AM   #657
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
Quote:
Originally Posted by klampykixx View Post
sorry for the tangent, but im wondering if the cornucopya spirals would give me the sort of close range clarity and bass impact im looking for, without going overboard on the any set range of frequencies which would inturn colour the produced music. (i do dance music just incase we werent sure.)
You don't want the Cornu's for close range, and they don't have the dance music bass either. They actually seem to work best when you are about at least 7 ft away, preferably more like 10 ft. They are not flat (based on the reviews) and the models so far. You wouldn't want them for studio monitors.
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Old 13th December 2012, 02:55 AM   #658
xrk971 is offline xrk971  United States
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Foam Core Board Speaker Enclosures?
Quote:
Originally Posted by Cal Weldon View Post
Show us please. Mine from moons ago is not a spiral but of course it *uck shaped. I am not near that drawing but will share when I can so you can tell me how wrong I am. It starts as a 4' round ply and doesn't need foam board as it's more of a TL opening to a straight sided horn. Maybe I will try a quick sketch. This is dependant on when my wife gets home and I have to be the man about the house again.
It's a sketch on my notebook, I still have to enlarge to full scale and will show you after it is cleaned up. It is similar to regular Cornu but with round overall profile which makes horn mouths have different exit angle.
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Old 13th December 2012, 03:11 AM   #659
Cal Weldon is offline Cal Weldon  Canada
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Foam Core Board Speaker Enclosures?
Quote:
Originally Posted by planet10 View Post
Anyone want to go at this one?
Dave, that's not fair. You know I make a great Guinea pig, especially the Pentagon. Let me digest it.
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Old 13th December 2012, 03:16 AM   #660
Cal Weldon is offline Cal Weldon  Canada
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My idea is more of a daisy. Too hard for me to actually plot though. I hope you like rum style drawings.
Attached Images
File Type: jpg IMG_0735.jpg (57.1 KB, 485 views)
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