My BassHorn VS Martin WSX |
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mykey
Old Croc Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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......will also give you a bigger throat chamber
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Amano
Registered User Joined: 06 October 2008 Location: Russia Status: Offline Points: 219 |
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I don't understand! Why? explain me please! Lets try to imagine horn like this: ...and where is the point of throat? X1 or maybe X2? My horn is the same.... Edited by Amano - 22 October 2008 at 9:08am |
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mykey
Old Croc Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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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
Old Croc Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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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 litres
atleast alzheimer's won't kick in early for me Edited by mykey - 22 October 2008 at 12:44pm |
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Centauri
Old Croc Joined: 29 November 2004 Location: Newcastle Aus Status: Offline Points: 1792 |
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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
Old Croc Joined: 12 March 2008 Location: Singularity Status: Offline Points: 3167 |
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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.
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Away on extended leave.
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Amano
Registered User Joined: 06 October 2008 Location: Russia Status: Offline Points: 219 |
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2 designs: http://amanosempai.narod.ru/web/like_wsx.htm |
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Amano
Registered User Joined: 06 October 2008 Location: Russia Status: Offline Points: 219 |
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Look at new version of my horn...
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mykey
Old Croc Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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very nice amono
throats small?
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Amano
Registered User Joined: 06 October 2008 Location: Russia Status: Offline Points: 219 |
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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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Amano
Registered User Joined: 06 October 2008 Location: Russia Status: Offline Points: 219 |
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Deadbeat
Old Croc Joined: 12 March 2008 Location: Singularity Status: Offline Points: 3167 |
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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 |
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Away on extended leave.
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