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12" eminence scoops....
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login4 View Drop Down
Old Croc
Old Croc


Joined: 03 April 2006
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Points: 1552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote login4 Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2007 at 8:46am
looks quite intresting actually, let me know how it sounds

also bk electronics have got some 250 wrms 8" carbon cones in there catalogue, quite cheep too, and the magnets are huge
CELTIC SUBSONIC SOUND SYSTEMS
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Hugo Biermann View Drop Down
Young Croc
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Joined: 05 February 2005
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Points: 809 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hugo Biermann Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2007 at 1:19pm
Have been phoning around today. No Luck in finding a proper Hi-Fi 8". Fostex drivers are rediculousley priced. f**k that. There is one candidate though. Its a 45w 8" at an electronics shop around da corner. Paper cone, nice big Rubber surround, Huge magnet and textile dustcap. No T/S though. 1m SPL is 90dB supposbly. So, I've been thinking now. Hive my bro my old hi-fi component piece of crap. Then build the 12" scoop with something like the 100W P-Audio HP-12W inside. The boxes will be standing in corners anyways. So that should help with extension. The other thing is the the HP-12W is kak slow with something like an 80 odd EBP value. FS is @ 48Hz so it would probably work for Hi-Fi boxes to rape at parties. Will stick a nice top end in da box with it and x at about 1.8K - 2K. The pioneer reciever boasts with 150W per channel so I will stick them on the 'B' channel.
I basically know f**k-all about scoops so what do ya lot think. Will it work? The bass EQ will also be set HARD. Should I try it?

And the other thing, The box will be huge for hi-fi so it will look moer impressive fo everyone else when the see the 'big horn' standin in my lounge as 'mains'. Will build it with ply and spray it with polurethan varnish.
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login4 View Drop Down
Old Croc
Old Croc


Joined: 03 April 2006
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Points: 1552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote login4 Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2007 at 2:57pm
sounds nice epecially if you run a nice large round over piece around the edge on the router and use 13 lam ply she would look a beut,,

 the only thing iv found with using pa speakers on hifi is they tend not to have such a good frequancy responce as a hifi cone, hifi cones are usually alot easyer to move thus alowing then to go alot deeper,

i was going to give you a few links to some comapies that supply 12" hifi drivers but realized your from South Africa,,,

the other thing is you could mount the tweeter or two in the top corners of the cabinet, that way the whole thing would be in one box....
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Tekasis View Drop Down
Old Croc
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Joined: 03 July 2006
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Points: 6492 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tekasis Quote  Post ReplyReply Direct Link To This Post Posted: 04 January 2007 at 4:46pm
Originally posted by login4 login4 wrote:


the other thing is you could mount the tweeter or two in the top corners of the cabinet, that way the whole thing would be in one box....
 
Not such a good idea I don't think, although I've seen it before.
 
Wouldn't it be better to have the tweeter in a separate box at head height level or better still over head height ?
Having it/them in the scoop at low level would muffle your top end sound especially if someone stood in front of it or passed by in front of it.
 
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Hugo Biermann View Drop Down
Young Croc
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Joined: 05 February 2005
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Points: 809 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hugo Biermann Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2007 at 2:30am
The cabs wont be used as the main system. They will be used when I want to make a noise. I've got a set of 10" SEAS' as mains, but they are just not loud enough for parties.
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login4 View Drop Down
Old Croc
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Joined: 03 April 2006
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Points: 1552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote login4 Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2007 at 5:02am
i was just thinking because of the use being home hifi you want the tweeter to be as close to the main driver as possable as not to sound too separated, most hifi cabinets have them as close as they can get them, some like tannoy, kef, etc use dual concentric drivers where the tweeter is in the middle of the driver itself, thats how concous about the theory thay are...

hope this helps
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Mircea Bartic View Drop Down
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Joined: 18 February 2005
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Points: 2589 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Mircea Bartic Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2007 at 5:57am
Hp-12W is a driver more suited for a satelite than a Scoop sub
My advice is to look at something else
general manager & head designer at nexus-acoustics research
http://www.facebook.com/nexus.acoustics.research

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Tom Umney View Drop Down
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Points: 4954 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom Umney Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2007 at 2:19pm
PD.12SB30 is a good scoop driver for a 12 inch scoop.

For an 8 inch scoop use either PD.8BM20 rated 200w rms, 2 inch vc [4.5mm xmax,BL 13,Qts 0.34] or B&C 8 PS21 rated 200w rms, 2 inch vc, [5mm xmax, BL 12.6,Qts 0.33] or Beyma 8G40 rated 250w rms, 2.5 inch vc[ 4.5mm xmax, BL 14.1,Qts 0.31]

The Beyma 8G40 seems like the best one with highest power handling, 2.5 inch vc, highest BL, lowest Qts, 2nd highest xmax.

 
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login4 View Drop Down
Old Croc
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Joined: 03 April 2006
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Points: 1552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote login4 Quote  Post ReplyReply Direct Link To This Post Posted: 05 January 2007 at 10:11pm
my self for hifi use i would use sommthing like this:

http://www.bkelec.com/HiFi/Drive_Units/Alcone/AC12SW.htm

it would just go so much lower
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Tom Umney View Drop Down
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Points: 4954 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Tom Umney Quote  Post ReplyReply Direct Link To This Post Posted: 06 January 2007 at 6:36pm
Originally posted by login4 login4 wrote:

my self for hifi use i would use sommthing like this:

http://www.bkelec.com/HiFi/Drive_Units/Alcone/AC12SW.htm

it would just go so much lower


Very impressive BL of 27 on the 8 ohm version for an 8 inch driver.


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Hugo Biermann View Drop Down
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Joined: 05 February 2005
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Points: 809 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Hugo Biermann Quote  Post ReplyReply Direct Link To This Post Posted: 07 January 2007 at 12:51pm
I'm going to use these cabs to play loud music @ parties @ my house and probably f**k them up. It's to much of a hassle to carry my 15" cabs in and to wire the whole ting every time. I'm looking for something that I can run off my receiver. It needs to be in the 100-200w region and have a sens. of about 95dB odd. I'm not going to buy expensive drivers to just go and f**k up. PD isn't available in S.A. and beyma's too expensive for what I want to do. The shops in Cape Town stock all sorts of woofers without any T/S parameters. What parameters should I look for anyways for what I want to do?
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Strange Daze View Drop Down
Old Croc
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Joined: 14 July 2006
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Points: 2861 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Strange Daze Quote  Post ReplyReply Direct Link To This Post Posted: 09 January 2007 at 10:54am

totally forgot about this thread for the last week or so....

for those of you thinking hi-fi...matt puzzle scaled down the 12" to a 6" and it sounded ace :-)
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