the newbie and the jaguar - Alpair BVR construction - Page 2

human.bin · 16th November 2009, 08:47 PM

thanks rj, i'm diving into the threads you suggested, this forum is a "good infinite"...

thanks Dave, do you know if changing the geometry this way of the mouth is simply ok or will affect the behaviour?

planet10 · 16th November 2009, 08:55 PM

Change of mouth geometry?

dave

Scottmoose · 16th November 2009, 08:58 PM

It'll screw it up.

human.bin · 16th November 2009, 09:11 PM

i intend making it straight as per picture since i don't care having a higher enclosure: just like the lotus^2 bvr.

i now noticed this post:
Highly rated 4"
maybe i should not ask about getting it trapezoidal... if so, sorry guys.

i think i'll be an happy custoumer of wooden designs we it open its doors

human.bin · 19th November 2009, 10:12 PM

Scott, when you find the time, please confrim me if making the very end of the mouth straight would screw it up or not, i don't intend to 'change the geometry' in any other way.

Can i ask if there is any reason the frequency response simulation is not show anymore on frugel-horn? it was quite informative to people choosing projects

planet10 · 19th November 2009, 10:21 PM

Quote:

Originally Posted by human.bin

Scott, when you find the time, please confrim me if making the very end of the mouth straight would screw it up or not, i don't intend to 'change the geometry' in any other way.

You have me confused. You'll need to skecth what you are changing.

dave

Scottmoose · 10:56 PM

I think he's refering to the flare profile of the mouth[s]. Yes, changing it will mess it up.

Re the FR graphs, we decided to pull them largely for that reason -contexts were tending to get overlooked, with apples being compared to oranges. I suppose it's a problem largely of our own making, as there are lots of different types of boxes on the FH site, and many of them were intended for different things, which was not always obvious in a simple FR plot, if at all. Eventually, we decided that they were starting to cause confusion, and that it was time for them to go. They might make a comeback at some point, but don't hold your breath -time is the enemy.

human.bin · 19th November 2009, 11:04 PM

this is it: everything else (inclination, dimensions, distances) being the very same except the detail in the red circle.

anyway thanks for a very fast reply

i know things look a little messed up and different in my sketch, but they are not.

planet10 · 19th November 2009, 11:36 PM

As long as you maintain the red bit, it shouldn't matter if you have the top bit, or whether you extend the red bit to be flat-faced as if it replaced the front of the top bit.

(hope that makes sense)

dave

human.bin · 19th November 2009, 11:45 PM

yes, it makes sense, so i can do it. i tought it could be a problem since the original jaguar was ending with a parallel piece at end of the mouth, but this last drawing is exactily want...

i would explain my self better first if my english was not so lacking... you know, when i'm not under osx i don't have that precious oxford dictionary coming out of spotlight and i'm lost...

thanks people! i'll be cutting wood soon

16th November 2009, 08:55 PM	#12
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Change of mouth geometry? dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

19th November 2009, 10:45 PM	#17
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	I think he's refering to the flare profile of the mouth[s]. Yes, changing it will mess it up. Re the FR graphs, we decided to pull them largely for that reason -contexts were tending to get overlooked, with apples being compared to oranges. I suppose it's a problem largely of our own making, as there are lots of different types of boxes on the FH site, and many of them were intended for different things, which was not always obvious in a simple FR plot, if at all. Eventually, we decided that they were starting to cause confusion, and that it was time for them to go. They might make a comeback at some point, but don't hold your breath -time is the enemy. Last edited by Scottmoose; 19th November 2009 at 10:56 PM.

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16th November 2009, 08:47 PM	#11
human.bin diyAudio Member Join Date: May 2008	thanks rj, i'm diving into the threads you suggested, this forum is a "good infinite"... thanks Dave, do you know if changing the geometry this way of the mouth is simply ok or will affect the behaviour?

16th November 2009, 08:58 PM	#13
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	It'll screw it up.

16th November 2009, 09:11 PM	#14
human.bin diyAudio Member Join Date: May 2008	i intend making it straight as per picture since i don't care having a higher enclosure: just like the lotus^2 bvr. i now noticed this post: Highly rated 4" maybe i should not ask about getting it trapezoidal... if so, sorry guys. i think i'll be an happy custoumer of wooden designs we it open its doors

19th November 2009, 10:12 PM	#15
human.bin diyAudio Member Join Date: May 2008	Scott, when you find the time, please confrim me if making the very end of the mouth straight would screw it up or not, i don't intend to 'change the geometry' in any other way. Can i ask if there is any reason the frequency response simulation is not show anymore on frugel-horn? it was quite informative to people choosing projects

19th November 2009, 11:45 PM	#20
human.bin diyAudio Member Join Date: May 2008	yes, it makes sense, so i can do it. i tought it could be a problem since the original jaguar was ending with a parallel piece at end of the mouth, but this last drawing is exactily want... i would explain my self better first if my english was not so lacking... you know, when i'm not under osx i don't have that precious oxford dictionary coming out of spotlight and i'm lost... thanks people! i'll be cutting wood soon

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