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Double loaded 12" or single
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jethrocker View Drop Down
Old Croc
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Joined: 07 June 2006
Location: Chiapas, Mexico
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Points: 1942 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jethrocker Quote  Post ReplyReply Direct Link To This Post Posted: 25 October 2006 at 12:22pm
I reckon those 12" scoops would sound nice and punchy used above a sub (eg 18" scoop) to play high bass up to say 160Hz..
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DJ Coupé View Drop Down
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Joined: 01 September 2006
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Points: 217 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DJ Coupé Quote  Post ReplyReply Direct Link To This Post Posted: 06 November 2006 at 12:56pm
cheers for the help folks, basically i now have 2 fane collossus 18xb cones in reflex cabs and 4 of the jbl 2206 so ill look into some of these designs and hopefully come up with a nice bass system i also have 2 jbl mpx1200s to run the bass. think id like to build 4 12'' scoops and 2 18" scoops
18" = 40hz - 80 hz maybe 100hz
12" = 100hz - 160hz
tops = 160hz upwards


Edited by DJ Coupé - 08 November 2006 at 3:01am
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DJ Coupé View Drop Down
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Points: 217 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DJ Coupé Quote  Post ReplyReply Direct Link To This Post Posted: 08 November 2006 at 3:03am
Originally posted by Nexus_3 Nexus_3 wrote:

"Not sure if anyone has made any 12" scoops on here yet with todays hi spec drivers installed, but I would say that it would definitely be worth a try or even a 2x12" mini scoop would not be all that big to make.  "


http://www.galerie.poweraudio.ro/?path=./Back%20Loaded%20Horn%20-%20BM12-CXA/


http://www.galerie.poweraudio.ro/?path=./Popute%20Cristian%20-%20back%20loaded%20horn%20-%20Oradea/


Do you think my cones would be happy in this cab as theres an extra 300w rms coming through mine?
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mobiele eenheid View Drop Down
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Joined: 15 August 2004
Location: Netherlands
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Points: 1563 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mobiele eenheid Quote  Post ReplyReply Direct Link To This Post Posted: 08 November 2006 at 7:45am

A 18" scoop ussually has a dip in the frequency respons around 70 - 80 Hz. A 12" downscaled scoop would probably have it's dip around 100-120 Hz.

With the crossover frequencies you propose you would have two dips in the frequency respons, if close enough even just one giant dip, right there in the kickarea. All used in a monostack would flatten those dips out.
You might just like it.
 
Wkr Johan
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