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12" scoop build for hifi |
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pre67 
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Joined: 06 December 2011 Location: bedfordshire Status: Offline Points: 168 |
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 Topic: 12" scoop build for hifiPosted: 23 October 2013 at 10:49pm |
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hello i started a thread asking for plans with no a massive about of feed but from what i have seen on the net small scoops are quit often used in hifi's so i found a plan for a 12"scoop and went for it not a clue if its going to sound any good but just building it for fun really so hear we go :)
This is the thread i stated off asking for plans http://forum.speakerplans.com/ported-mid-horn_topic82893.html hears the spec so fair i managed to get 2 really nice sounding 12" drivers that will be powerd of a 2x30watt valve amp celestion full range twin cone loudspeakers model ps 12 tc 1798 15ohms 20watts   the plan use shoure what its call the if any one could fill us in on that  the angels where missing so had to draw it to scale to find them out  and this is where i have got to so fair :D my 1st scoop's   all i need now is 2 nice horns or bullets but i need them to be really efficient low wattage high ohm's tho same as the 12" drivers. I havent got a lot of power to play with |
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pre67
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Joined: 06 December 2011 Location: bedfordshire Status: Offline Points: 168 |
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Posted: 23 October 2013 at 10:53pm |
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one last photo of where i am up to i am awaiting on boroing a saw to do the angels but should hopefully be testing them by the weekend fingers crossed
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T-Bone
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Joined: 27 December 2005 Location: Tampa, FL USA Status: Offline Points: 297 |
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Posted: 24 October 2013 at 2:12am |
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Pre67 I have my fingers crossed because I want to build 12' Eminence Scoops for low mid to mid range (90-990 Hz) if possible loaded with a pro 12" driver. Please let us know the results, thanks!
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BASS, how low can you go!
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pre67
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Posted: 24 October 2013 at 7:12pm |
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Will do t bone what driver is it you where thinking of useing I think I might build a 3rd for a sub but haven't got a driver So could and Consider anything
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Lad
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Joined: 01 February 2013 Location: Slovakia Status: Offline Points: 153 |
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Posted: 24 October 2013 at 8:35pm |
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T-Bone, go for it! I've got 12" scoop fitted with RCF L12P520, on top goes RCF N300 driver, sounds sweet and the 12" goes down to 65 Hz nicely.
Originally built for home hi-fi, I got it from the builder and use it for live gigs. |
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with regards, Ladislav
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odc04r
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Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5469 |
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Posted: 24 October 2013 at 10:38pm |
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Fair play for having a crack. You can't go too wrong really! It will make some noise regardless.
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b grade
Young Croc 
Joined: 05 October 2012 Location: Portland OR USA Status: Offline Points: 1333 |
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Posted: 24 October 2013 at 11:06pm |
My toy sized 10 inch scoops do not sound right over 300 at all. They were roughly based on the eminence as well, and they are fun for midbass but kinda lousy for mid. Around 320 there is an annoying honk that jumps right of the page in freq response. I cut them off at 200 or lower with 12db/oct and then squash above 300 with a parametric eq shelf. Not saying it can't be done, just that I have not done it. For midrange, I don't see a scoop being the right pick. |
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T-Bone
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Joined: 27 December 2005 Location: Tampa, FL USA Status: Offline Points: 297 |
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Posted: 25 October 2013 at 1:04am |
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I am planning on using a new Faital Pro 12FH530 it's got weather protected cone and demodulating ring, low Le, low Qts, Bl 19, and cone is medium weight for horn loading OR I can use the industry standard JBL 2206? Any thoughts I also get great pricing on Faital Pro, it's good to know people from the industry.
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BASS, how low can you go!
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T-Bone
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Posted: 25 October 2013 at 1:07am |
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Pre67 you can try a 12" tapped horn from DIY audio or Marc's site he's got a nice 12" tapped horn. Can go nice to 120 Hz.
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BASS, how low can you go!
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odc04r
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Posted: 25 October 2013 at 9:56am |
That Faital driver looks like a driver that would be quite at home in a mid or midbass horn but then Fs says that if you design a scoop well I expect you would get a decent response down to 60Hz ish. Would be worth chucking the parameters into a simulator and seeing what happens. |
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T-Bone
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Posted: 25 October 2013 at 4:30pm |
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Unfortunately I do not know or have access to a simulation program if someone in the forum can try please let us know. Thanks!
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BASS, how low can you go!
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odc04r
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Posted: 25 October 2013 at 8:48pm |
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Akabak is free for personal use, horn response is free too. Loads of tutorials round the web! Draw a plan and have a go.
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T-Bone wrote: