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My BassHorn VS Martin WSX

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mykey View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2008 at 7:56am
......will also give you a bigger throat chamber
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Amano View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amano Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2008 at 9:06am
Originally posted by mykey mykey wrote:

Amano! your throat would be 597cm2 not 420cm2

so this would aslo shorten the length of the horn



I don't understand! Confused Why? explain me please!
Lets try to imagine horn like this:

...and where is the point of throat? X1 or maybe X2? Shocked
My horn is the same....


Edited by Amano - 22 October 2008 at 9:08am
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mykey View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2008 at 12:15pm

where it says 111mm and not 78mm

lets imagine your lungs are the rear chamber and the throat is your throat

your lungs are have a 'large' volume of air, and the air from them has to get sqeezed through your 'small' throat

The area that is the large hole in front of the driver (baffle cut out) is 1250 cm2 or there abouts? which is larger than 111 x 538 =  597cm2, so this becomes your throat
not the area that says 78 x 538 = 420
 
you also have 4.5 litres of volume in the cone it self, plus the area in front of the driver (throat chamber) before it gets to the throat, this all becomes the throat chamber, so you also have to take that into account
 
I'll check if you have added this on
 
I said the point that says 111 because your sketch of the X1 and X2 is a bit extreme, but it would be X2, if your drawing wasn't so wide at that point


Edited by mykey - 22 October 2008 at 12:33pm
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mykey View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2008 at 12:27pm
just checked and I don't know how you have come to 11 litres for throat chamber
 
This is what you have to put in now for throat chamber
 
4.5 litres for inside cone and baffle (rough estimate) then you have to put in 19.28 litres for the area in front of the driver, these both being the throat chamber
 
111mm x 538mm x 646mm = 38.57 litres the divide by 2 = 19.28 + 4.5 = 23.78 litres
  
you have 11 litresErmm
 
atleast  alzheimer's won't kick in early for meSmile


Edited by mykey - 22 October 2008 at 12:44pm
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Centauri View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Centauri Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2008 at 3:00pm
Originally posted by mykey mykey wrote:

where it says 111mm and not 78mm


And how do you arrive at that conclusion?  The throat would be the smallest point between the driver and mouth where there is positive expansion towards the mouth, which would be the 78mm point (or arguably even further towards the pointy end from this).  As the driver is loaded into the side of the horn and is a small distance from the end in relation to the wavelengths involved, the effective length of the horn would also be right up into the top corner.

@Amano : how is any of these designs easier to build than the WSX?
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Deadbeat View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Deadbeat Quote  Post ReplyReply Direct Link To This Post Posted: 22 October 2008 at 3:03pm
I can't see any designs. photofile.ru ain't working either. Could someone put these on mediafire or something, I'd like to have a look.
Away on extended leave.
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Amano View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amano Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2008 at 4:01am
Originally posted by Deadbeat Deadbeat wrote:

I can't see any designs. photofile.ru ain't working either. Could someone put these on mediafire or something, I'd like to have a look.


2 designs:
http://amanosempai.narod.ru/web/like_wsx.htm


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Amano View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amano Quote  Post ReplyReply Direct Link To This Post Posted: 31 October 2008 at 4:58am
Look at new version of my horn...Wink




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mykey View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mykey Quote  Post ReplyReply Direct Link To This Post Posted: 31 October 2008 at 7:03am
very nice amono
throats small?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amano Quote  Post ReplyReply Direct Link To This Post Posted: 31 October 2008 at 9:25am
Yes. It's 414 sq cm... and TC volume is ~19 litres. Length of horn ~2m. It's longer than an original WSX horn length.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Amano Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2008 at 6:20pm
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Deadbeat View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Deadbeat Quote  Post ReplyReply Direct Link To This Post Posted: 27 November 2008 at 6:28pm
Clap Congratulations.

Real nice double 18 push-push.

One thing you might want to do is consider the angle on the drivers.

No rear chamber?


Edited by Deadbeat - 27 November 2008 at 6:31pm
Away on extended leave.
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