array or sweet sixteen?

adason · 12th September 2006, 12:13 AM

Hi gents,

I really can't decide...need your advice.

I have recently obtained 18 midrange drivers, they are nothing special, 4" , 5.8 ohm midrange from foster, they sound ok though, definitely need tweeter.

http://cgi.ebay.com/ws/eBayISAPI.dll...MEWN%3AIT&rd=1

I alredy have tweeters, mounted in two sets of six as short array, Linaeum, nice tweeters..

Now the problem is I can't decide between two configurations, both will be used with subwoofer.

Each has cons and pros, we can discuss it. I am open. Looking for your kind advice/suggestions.
Thanks, ed

Here are two options:

zobsky · 12th September 2006, 01:30 AM

choose the line array

planet10 · 12th September 2006, 03:03 AM

Sweet Sixteen is a very specific 4x4 configuration... you could build 1, but i wouldn't bother, they aren't very good... build a line array -- or a bipole or an omni -- you have enuff drivers to do an EPI Tower-style design with an MTM on each of the 4 faces. You could also fill the faces of a dodecahedron... (i'd leave the bottom one blank for a stand and the bottom back for input, using the top and front (up) for a pair of tweeters)

dave

planet10 · 12th September 2006, 03:13 AM

Sweet Sixteen 2,6 MB

wrenchone · 12th September 2006, 03:37 AM

My spekers are a heaxonal prisms loaded with (16) 5" drivers and 3 tweeters each side - sort of an omni approach, with drivers on 5 faces of the prism. I've had them for a quarter century.

planet10 · 12th September 2006, 03:45 AM

Pictures please....

wrenchone · 12th September 2006, 04:08 AM

They be ugly...

planet10 · 12th September 2006, 06:03 AM

Quote:

Originally posted by wrenchone
They be ugly...

Sounds like 99% of the ones i build.

Don't be shy

dave

Jim Griffin · 12th September 2006, 01:39 PM

The Sweet Sixteen array is a plenty dumb design. Line arrays are the way to go. See my white paper.

Near Field Line Array White Paper

adason · 12th September 2006, 02:51 PM

Hi Gents,

thanks to all of you for the response.

Zobsky, Jim, yes, I will go ahead with array. Now what exact array....I will have to decide/ might need more help.

Dave, thanks for info about the sweet sixteen, I know it from Roger Russels web pages, and I was using the term very loosely. I did not mean to built one with sixteen drivers, but two sweet eight with tweeters. Anyway, just did not know better how to call it. I guess the rational behind my configuration "A" would be more coherent source.

No way am I going to built dodecahedrones, dave and wrenchone, first those 18 drivers I have are realy only midranges, not full ranges, so they would need aditional tweeters on each side. I do not have that many tweeters and those six are already mounted together. Plus, I am quite a lazy guy!

Thanks all,
I will have some more questions about the arrays, I am sure.

So the array it is. (my first!)

ed

12th September 2006, 01:30 AM	#2
zobsky diyAudio Member Join Date: Mar 2002 Location: Dallas, Tx, USA	choose the line array __________________ "Any fool can know. The point is to understand" - Albert Einstein

12th September 2006, 03:03 AM	#3
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Sweet Sixteen is a very specific 4x4 configuration... you could build 1, but i wouldn't bother, they aren't very good... build a line array -- or a bipole or an omni -- you have enuff drivers to do an EPI Tower-style design with an MTM on each of the 4 faces. You could also fill the faces of a dodecahedron... (i'd leave the bottom one blank for a stand and the bottom back for input, using the top and front (up) for a pair of tweeters) dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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12th September 2006, 03:13 AM	#4
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Sweet Sixteen 2,6 MB

12th September 2006, 03:37 AM	#5
wrenchone diyAudio Member Join Date: Feb 2004 Location: Silicon Valley	My spekers are a heaxonal prisms loaded with (16) 5" drivers and 3 tweeters each side - sort of an omni approach, with drivers on 5 faces of the prism. I've had them for a quarter century.

12th September 2006, 03:45 AM	#6
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Pictures please....

12th September 2006, 04:08 AM	#7
wrenchone diyAudio Member Join Date: Feb 2004 Location: Silicon Valley	They be ugly...

12th September 2006, 01:39 PM	#9
Jim Griffin diyAudio Member Join Date: Jun 2003 Location: Tennessee	The Sweet Sixteen array is a plenty dumb design. Line arrays are the way to go. See my white paper. Near Field Line Array White Paper

12th September 2006, 02:51 PM	#10
adason diyAudio Member Join Date: Nov 2004 Location: home sweet home	Hi Gents, thanks to all of you for the response. Zobsky, Jim, yes, I will go ahead with array. Now what exact array....I will have to decide/ might need more help. Dave, thanks for info about the sweet sixteen, I know it from Roger Russels web pages, and I was using the term very loosely. I did not mean to built one with sixteen drivers, but two sweet eight with tweeters. Anyway, just did not know better how to call it. I guess the rational behind my configuration "A" would be more coherent source. No way am I going to built dodecahedrones, dave and wrenchone, first those 18 drivers I have are realy only midranges, not full ranges, so they would need aditional tweeters on each side. I do not have that many tweeters and those six are already mounted together. Plus, I am quite a lazy guy! Thanks all, I will have some more questions about the arrays, I am sure. So the array it is. (my first!) ed

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