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12 inches |
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Strange Daze 
Old Croc 
Joined: 14 July 2006 Location: United Kingdom Status: Offline Points: 2861 |
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 Topic: 12 inchesPosted: 02 July 2009 at 4:26pm |
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Hey there, I’m just curious, if anyone has any 12” scoop designs handy, or recommended. Cheers, C |
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Ibex
Young Croc 
Joined: 27 May 2009 Status: Offline Points: 1013 |
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Posted: 02 July 2009 at 4:39pm |
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Maybe these designs will fit...
http://www.speakerplans.com/FORUM/forum_posts.asp?TID=27673&title=peshkov-sub--scoop--tapped--arls greez |
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Strange Daze
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Posted: 02 July 2009 at 4:44pm |
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awesome. Thank you. Did you just scale all the dimensions down...or was there any adjustments?? Cheers!! Edited by Strange Daze - 02 July 2009 at 4:48pm |
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levyte357
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Joined: 10 May 2004 Location: UK, London Status: Offline Points: 11743 |
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Posted: 02 July 2009 at 4:48pm |
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What are the lowest freqs you are expecting to reproduce? |
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"Who am I? I'm the guy who does his job.. You must be the other guy".
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adambomb
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Joined: 10 April 2006 Location: United Kingdom Status: Offline Points: 3220 |
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Posted: 02 July 2009 at 5:39pm |
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cos it won't be that low.
I could understand a 12" scoop... if it still had the path length and mouth size of a full size...
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Ibex
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Joined: 27 May 2009 Status: Offline Points: 1013 |
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Posted: 02 July 2009 at 5:53pm |
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Just downscaled, no adjustments... Which Eminence driver do you wanna use? |
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bitzo
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Joined: 20 November 2007 Location: Italy Status: Offline Points: 977 |
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Posted: 02 July 2009 at 7:03pm |
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check the eminence book, it's good start point.
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rich_gale
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Joined: 18 February 2008 Status: Offline Points: 2697 |
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Posted: 02 July 2009 at 7:35pm |
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scaling a hog down to fit a 8/10" driver in, what sort of response are we talking? 90hz and up? or higher? want to make a 'kick' bin with a direct radiating driver to allow up to a 90-800hz response. will a scaled down scoop of this size have any efficiency benefits in the 90-800hz region when compared against a reflex cab tuned and high passed at around the 90hz point? this will be used as a single cab with a horn dealing with 800hz and up.
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REFLEX ALL THE WAY.... (however, im playing with horns again...) That ok Mister Valiant? :)
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bassmish
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Joined: 28 October 2007 Location: MAAAANCHESTER Status: Offline Points: 1333 |
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Posted: 04 July 2009 at 1:33am |
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I think the question should be 'how loud do you want the low f response?'... I'm pretty sure that the main influence of having a smaller driver will not be that it will not play as low but rather it will not play low notes as loud.. you could make a 12'' scoop with extremely similar freq response to 18'', it just wouldn't play the low notes as loud. gotta remember that 5'' reflex hi fi speakers will still play down to like 40hz. Just not as well. |
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levyte357
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Posted: 04 July 2009 at 11:49am |
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A Correctly tuned 2x12" reflex cab, using Eminence LF drivers, will easily go low enough to play organ notes, at suitable SPL for a house. Few of us had similiar to this in our bedrooms when we were teenagers, rattling the letterbox downstairs.  |
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"Who am I? I'm the guy who does his job.. You must be the other guy".
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fat_brstd
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Joined: 23 August 2008 Location: Melbourne, OZ Status: Offline Points: 2126 |
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Posted: 06 July 2009 at 12:41pm |
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I have a pair of 12 inch scoops that we use for smaller partys and pub back gardens that sort of thing. They do drop low as low as larger driver scoops but they are the same sort of sized box. The spl produced is not as good as that of a bigger driver when driven with the same amount of power.
For a house its pretty pointless as they are still massive boxes. Scalling the design down will just make the horn shorter and thus the frequencies it can hit higher. for really low note you need a really big box.
I would always go with a tuned reflex box for a house if you wanted silly volumes compared to a hifi speaker
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Strange Daze
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Joined: 14 July 2006 Location: United Kingdom Status: Offline Points: 2861 |
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Posted: 06 July 2009 at 1:28pm |
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I have a pair of Celestion Truvox 1225e lying around not being used. As these are only for my Hi-Fi...I may change them at a later date...
sorry...I should have been more clear in my first post. I have the eminence book, but am looking for other options also... I may use a car driver thinking about it....they are only for my lounge. Fat Barstard....Its the 'look' im after more than anything. One either side of my TV :) |
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Strange Daze wrote: