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will an x-tro comfortably meet a LAB horn?
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Mark James View Drop Down
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Joined: 15 January 2006
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Points: 5306 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark James Quote  Post ReplyReply Direct Link To This Post Posted: 03 December 2006 at 1:30pm
yes please cut list v.much wanted...
insert silly sentence here
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biotec View Drop Down
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Joined: 07 June 2004
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Points: 2932 		Post Options Post Options   Thanks (0) Thanks(0)   Quote biotec Quote  Post ReplyReply Direct Link To This Post Posted: 03 December 2006 at 1:43pm
http://www.filefactory.com/file/de2a86/

here ya go
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Mark James View Drop Down
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Joined: 15 January 2006
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Points: 5306 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark James Quote  Post ReplyReply Direct Link To This Post Posted: 06 December 2006 at 8:10pm
nice .... anyone any ideas on horn resp for this cab?????????
insert silly sentence here
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ceharden View Drop Down
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Joined: 05 June 2005
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Points: 11851 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 06 December 2006 at 9:17pm
Bit of messing around suggests f3 at about 80Hz, sensitivity just over 105dB (2Pi space)
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Mark James View Drop Down
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Joined: 15 January 2006
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Points: 5306 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mark James Quote  Post ReplyReply Direct Link To This Post Posted: 06 December 2006 at 9:36pm
what range will it play flat and what drivers were you moddeling
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biotec View Drop Down
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Joined: 07 June 2004
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Points: 2932 		Post Options Post Options   Thanks (0) Thanks(0)   Quote biotec Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2006 at 4:38am
I'm modellling using the B&C 15NDL76 but the PD154 gives similar results.
 
Hornresp shows a sharp rolloff at 300Hz but walt suggested 400Hz as the upper cut-off? I'm inclined to ignore hornresp's results at the upper end because I find it hard to believe that any 15inch driver (especiially a neo one with a rising response) in a straight horn will lose volume so low down.
 
I've sent walt a PM asking for advice but I haven;t heard anythuing back yet. I'm unlikely to use the cab below 100 but I suspect it'll play nicely below it. When I have time I'll model it as a bandpass box and see what happens (small front chamber with large port?)
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Contour View Drop Down
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Joined: 03 March 2004
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Points: 677 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Contour Quote  Post ReplyReply Direct Link To This Post Posted: 07 December 2006 at 2:03pm
Hello Biotec,
 
As I have mentioned several times on this forum, this specific kick-bin design did not perform exactly the way I had hoped for. I have given you mine ideas on how to improve this bin while keeping the lay-out and dimensions the same, but in no way this is a guarantee your bin will give the results you hope for, but we will see what it does. I think you have about 75% chance this bin turns out well. Important: use some kind of wadding in the rear chamber of the 2x15". You have to prevent sound reflecting from the backwall trough the thin cone into the horn.
 
As for the upper frequency range, the 400Hz value I got from AJ-Horn. Of course this is driver dependent.
 
Best regards,
 
Walt
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Hi_Varu View Drop Down
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Joined: 17 January 2008
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Points: 181 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hi_Varu Quote  Post ReplyReply Direct Link To This Post Posted: 11 June 2008 at 12:57pm
so how it works?
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biotec View Drop Down
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Joined: 07 June 2004
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Points: 2932 		Post Options Post Options   Thanks (0) Thanks(0)   Quote biotec Quote  Post ReplyReply Direct Link To This Post Posted: 11 June 2008 at 1:44pm
I built something similar but more tailored for my needs in the end.
 
me so horny, me love you long throw.
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pfly View Drop Down
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Joined: 25 October 2007
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Points: 2827 		Post Options Post Options   Thanks (0) Thanks(0)   Quote pfly Quote  Post ReplyReply Direct Link To This Post Posted: 17 June 2008 at 6:01pm
Haha, that 2x15" looks like there's enough wasted space to build acces panels / doors on both sides of the bin and store your speaker cables and stuff like that in there. LOL

Edited by pfly - 17 June 2008 at 6:02pm
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