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New Sub-Horn plan?

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Young Croc
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    Posted: 19 March 2006 at 7:29am

Ive been messing about on paint to come up with a new 18" Folded horn to be used for true sub bass (like the lab sub) as apposed to the rib breaking kick of an 1850 horn say.

I have tried to achieve this by making the horn length quite long (about 3m) . Im quite a novice in this field so any critisisms are more than welcome so i can modify it etc. also would an 18" driver be suitable for such a large horn length?

heres the general layout:

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Jay Lawless View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jay Lawless Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2006 at 12:10pm
a large horn length just extends the lower f3 a little more. more horn path = lower frequency, but a bad part i see here is that you'r horn mouth is much too small. extend the front by about 15.25cm and add a bit more to the horn mouth to bring out the kick *SPL*. also i would sugjest using the rearchamber of a 1850horn for refference for you'r rearchamber. the rearchamber of a 1850horn is just about 70L, base you'r design off of that and the drivers ment for the 1850horn to get you started.
Previously known as NeverWinter

Background: Automotive, Live and Home Custom Design. mid/high level based design and feild experience. Bass specialist
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote al_x Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2006 at 1:12pm

how about this.... bigger horn mouth.

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ceharden View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2006 at 3:44pm
Um, it's getting a bit big!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Heathrow_B_line Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2006 at 4:08pm

isnt that nearly as big as a lab?

 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote norty303 Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2006 at 4:24pm
Your horn path appears to tighten and expand in different sections too
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Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote al_x Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2006 at 5:11pm

Originally posted by ceharden ceharden wrote:

Um, it's getting a bit big!

yeh thats what i thought.

its just a very first idea tho. i did it on paint in 5 minutes

back to the 'drawing board'

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Jay Lawless View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jay Lawless Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2006 at 11:56pm
try something like this, though maybe not as many lines but something simular. try a HxD of 90.25cm high and 90.25cm deep. and also try a width of about 76.2-76.25cm, that should give you plenty of room.





Edited by NeverWinter - 19 March 2006 at 11:57pm
Previously known as NeverWinter

Background: Automotive, Live and Home Custom Design. mid/high level based design and feild experience. Bass specialist
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Mircea Bartic View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2006 at 2:56am
I see a whole lot of wasted space in there...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2006 at 3:40am

if thats your design! i wouldnt use the word sub!!

and the mouths to small.

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Jay Lawless View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jay Lawless Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2006 at 3:42am
Originally posted by Nexus_3 Nexus_3 wrote:

I see a whole lot of wasted space in there...


exactly why i said not to really go by those folds.

personaly i think it's a little much... but hey, who ever said you couldn't try you know...


Previously known as NeverWinter

Background: Automotive, Live and Home Custom Design. mid/high level based design and feild experience. Bass specialist
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jimbo Quote  Post ReplyReply Direct Link To This Post Posted: 20 March 2006 at 11:44am

Do your simulations, decided on your compromises and when your satisfied, build a prototype.  This being said from someone who is in this as a hobbie.  Building them is more than half the fun.  If size doesn't matter (depends on who you talk to), why not?

If you have access to AutoCAD, Graeme has a very cool program for doing horn foldings on his sight.

Jim

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