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---MINI-SCOOP-IDEA--- |
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tweeter box 
Old Croc 
Joined: 21 October 2007 Location: United Kingdom Status: Offline Points: 6784 |
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 Topic: ---MINI-SCOOP-IDEA---Posted: 27 October 2007 at 12:04pm |
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From previous thread;
Im trying to design my own *hybrid b-line mini scoop
 * box to load with a V18-1200, just needed some advice and opinions on;a) what depth/length piece of wood A should be?
b) what angle/length piece of wood B should be?
 If its any good will be building a pair of them, can i also mention that im not using any programing software so please keep your comments not to technical
Thanks in advance
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mykey
Old Croc
Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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Posted: 27 October 2007 at 1:02pm |
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What do you want from it? high bass? low bass?
or a bit of both?
Looking at the drawing the length of he horn is to much for the mouth size
you could get away with a 1.5 mtr horn length i reckon, what length is that 1.8/9?
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tweeter box
Old Croc
Joined: 21 October 2007 Location: United Kingdom Status: Offline Points: 6784 |
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Posted: 27 October 2007 at 1:18pm |
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Im after some REALLY low bass!
Would this design do it? Am i on the right track?
The height of the mouth would be 14", do u think this will be to tight??
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mykey
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Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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Posted: 27 October 2007 at 1:19pm |
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Do you have to have that specific size?
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tweeter box
Old Croc
Joined: 21 October 2007 Location: United Kingdom Status: Offline Points: 6784 |
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Posted: 27 October 2007 at 2:09pm |
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doesnt have to be that size just thought it would be convenient carrying/storage n what not!
How much difference will it make if the mouth size is bigger/smaller?
Im guessing a tighter throat would be better for punchy bass and a larger throat be better for deep???
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Jhodas
Young Croc 
Joined: 04 June 2007 Location: United Kingdom Status: Offline Points: 1244 |
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Posted: 27 October 2007 at 3:34pm |
You'll need a bigger box. |
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Until the Lions have their own historians, tales of hunting will always glorify the hunter.
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tweeter box
Old Croc
Joined: 21 October 2007 Location: United Kingdom Status: Offline Points: 6784 |
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Posted: 27 October 2007 at 4:17pm |
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Bloody hell how big exactly do u think i should make it?
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mykey
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Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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Posted: 28 October 2007 at 5:20am |
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what about 38 x 30 x 24 why not just build the DubPass? |
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tweeter box
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Joined: 21 October 2007 Location: United Kingdom Status: Offline Points: 6784 |
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Posted: 28 October 2007 at 6:59pm |
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Whats wrong with the dimensions ive got already? |
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AlfieDring
Young Croc
Joined: 04 September 2006 Location: Bath, UK Status: Offline Points: 842 |
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Posted: 18 December 2007 at 5:33pm |
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"Im guessing a tighter throat would be better for punchy bass and a larger throat be better for deep??? "
Erm, well that box looks like a BigVentReflex to me rather than a horn really. So the opposite rule of thumb will apply, the larger the cross section of the port for a given length the higher the tuning will go. So small port = deep tuning, large port = high tuning. If you want it really chunky it has to be loads longer to compensate. Alf |
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Mark James
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Joined: 15 January 2006 Location: rig side Status: Offline Points: 5306 |
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Posted: 19 December 2007 at 12:21am |
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yes hes right look at the expansion rate of that horn.... more like a port than a horn....
actualy as an aside where the bottom bend is youve actualy got negative expansion, will this area not also act as an extra rear chamber? so a sort of direct radiating bandpass..... |
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tweeter box wrote: