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tapped horn design |
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MarjanM 
Old Croc 
Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7816 |
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 Posted: 02 February 2007 at 9:48am |
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How does it look inside?
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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mykey
Old Croc
Joined: 18 August 2005 Location: UK/Indonesia Status: Offline Points: 9680 |
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Posted: 02 February 2007 at 10:07am |
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very dark! sorry it's my living, cant be doing that hope you understand
by the way guy's these have superb throw unlike the traditional scoop
anyone with pd186's loaded into this box would come in their y-front's Edited by mykey - 02 February 2007 at 10:25am |
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Mark James
Old Croc
Joined: 15 January 2006 Location: rig side Status: Offline Points: 5309 |
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Posted: 02 February 2007 at 10:20am |
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fair play mykey!
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me so horny me love you long throw
horn loaded for her pleasure |
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moray james
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Joined: 07 September 2005 Location: Canada Status: Offline Points: 141 |
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Posted: 02 February 2007 at 2:15pm |
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Myke: while you called it a scoop don't you think that it has turned into a Tapped Horn? Where is the turning point? That really what i was on about with the "what's a scoop anyway" thread. Tuck that driver into the mouth and the load impacts the drivers values. Good lookin box.
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moray james
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Tom Umney
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Joined: 26 February 2004 Location: United Kingdom Status: Offline Points: 4954 |
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Posted: 02 February 2007 at 4:28pm |
And load it with a PD1850, and it would blow my bollox off?  Edited by Tom Umney - 02 February 2007 at 4:29pm |
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MarjanM
Old Croc
Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7816 |
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Posted: 02 February 2007 at 4:39pm |
 it's OK mykey.
Cheers
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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TRE4U2NV
Old Croc
Joined: 21 May 2005 Location: home Status: Offline Points: 2592 |
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Posted: 02 February 2007 at 6:11pm |
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NORLINGTON BOYS DO IT AGAIN HE HE HE HE HE HE HE |
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IM SO SECRETIVE BUT I CANT TELL YOU WHY
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jethrocker
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Joined: 07 June 2006 Location: Chiapas, Mexico Status: Offline Points: 1942 |
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Posted: 02 February 2007 at 8:52pm |
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I've informed mikey that patent is pending on the plan I posted some weeks back... |
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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: 03 February 2007 at 1:12am |
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well i wish my indian dinner last night was a concept, because my arse is flowing
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staiper
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Joined: 26 February 2004 Location: Croatia Status: Offline Points: 545 |
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Posted: 09 February 2007 at 3:36pm |
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Hello,
Initiated with mykey post I have searched a bit my hard disk and found this one. Something is jammed with my msn-group so I must host pics on other location.. This "HOG" scoop is flat (+/-2db) from 35 to 110Hz with sensitivity of 100db-per watt/1m @ 33Hz and average 104db 1W/1m from 40Hz to 105Hz.. – with SD18 ground plane. I have built four of those last summer for a customer and got them only 2 days finished before a man come with van (and money ;) ) to pickup them. I have to say that this one is one of few that really scared me at full power (stacked 2on2). On this pic only outer dimensions are noted (it is not big philosophy and anyone can estimate internal) ..Internal will be published once when I catch some time to finally sort and upload my site. Bass unit is mounted on horn mouth panel but this does not make this cabinet a "tapped" horn design.  Best wishes, Stipe |
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Rog
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Rogers Archive Posts Joined: 23 March 2010 Status: Offline Points: 2166 |
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Posted: 09 February 2007 at 8:27pm |
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Yep, spot on Stipe.
I've really quickly drawn one up and the path length is 2.4 meters, which equates to 35.16Hz.
Really nice design, I think you have just pushed the whole cause a big step in the right direction. I can see this becoming the best DIY sub build and it will hold that title for a long time to come.
 Best wishes,
Rog.
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Rog
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Rogers Archive Posts Joined: 23 March 2010 Status: Offline Points: 2166 |
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Posted: 09 February 2007 at 8:46pm |
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Just done a sim,
Used these parameters:
Horn Length 2.4 m
AT (throat size) 890 sqcm
VFC (front chamber) 35 litres
Mouth 5700 sqcm
I didn't do the sim in hornresp, but akabak and another program I use say it should work well. A larger throat will give more output lower down and the dip in response at 115Hz can be made smaller by decreasing the front chamber volume.
I modelled the design using an SD 18, but also tried the V18-1200 and the V18-1200 gives a lot more output below 55Hz.
Rog.
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mykey wrote: