Help Me Clone this Radical Speaker

Ben Reginato · 3rd March 2008, 10:48 PM

Hi All,

I wanted to make a DIY clone of this speaker http://www.wolcottaudio.com/WA_omni.htm
and I was thinking of making it a stuffed U-frame Dipole/T-Line. My questions are
(1)when does a U-frame Dipole become a T-line (2) What are the BSC rules for such a weird Speaker
(3)Will four GR Research M165-X's with a Morel MDT33 give me 92db@8 ohms and go down to about 30hz?
(4) Would a sealed bass section be better?
(5)Could a !st Order series XO work here?

Thanks Ben

nsklavos · 4th March 2008, 03:51 AM

Do a web search for US Patent #4,850,452 and it might help you get some ideas. There are several sites that let you download patents for free...you just need to sign up.

el`Ol · 4th March 2008, 10:05 AM

What they basically do is putting a tweeter between two closely spaced waveguide elements instead of using a reflector in order to get better vertical dispersion, not so different from what Mirage do. But from the simple spherical shape of the waveguide I would expect horn colorations. In my opinion the pyramid-setup of four midwoofers only slightly improves the vertical radiation pattern compared to a traditional one midwoofer plus reflector setup, but on the other hand causes lobing problems. So in my eyes it is a radical radiation pattern über alles concept.
If you really want to clone it, my advice is using a car tweeter with no front plate and four Eighteensound 6ND430 midwoofers (16 Ohm version) in parallel.
http://www.eighteensound.it/index.as...roduct&pid=243
As you can see it has a very nice response 45° off axis and should be OK for the pyramid setup.

3rd March 2008, 10:48 PM	#1
Ben Reginato diyAudio Member Join Date: Aug 2003 Location: S.f. Bay Area	Help Me Clone this Radical Speaker Hi All, I wanted to make a DIY clone of this speaker http://www.wolcottaudio.com/WA_omni.htm and I was thinking of making it a stuffed U-frame Dipole/T-Line. My questions are (1)when does a U-frame Dipole become a T-line (2) What are the BSC rules for such a weird Speaker (3)Will four GR Research M165-X's with a Morel MDT33 give me 92db@8 ohms and go down to about 30hz? (4) Would a sealed bass section be better? (5)Could a !st Order series XO work here? Thanks Ben __________________ All False GODS Demand Some Sort Of Human Sacrifice In The End!

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
radical change to a set of kit boxes	busterno1	Multi-Way	20	17th June 2010 02:32 PM
radical idea for an active digital speaker	_atari_	Multi-Way	19	14th November 2006 01:21 PM
Ready to design a radical box!	Zac_cutt	Car Audio	9	29th September 2006 08:01 PM
Radical PCB design concept	SY	Everything Else	3	10th August 2004 07:31 AM
Radical (insane) PSU ideas	Fuling	Tubes / Valves	21	5th July 2004 05:32 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

4th March 2008, 03:51 AM	#2
nsklavos diyAudio Member Join Date: Feb 2007 Location: California	Do a web search for US Patent #4,850,452 and it might help you get some ideas. There are several sites that let you download patents for free...you just need to sign up.

4th March 2008, 10:05 AM	#3
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	What they basically do is putting a tweeter between two closely spaced waveguide elements instead of using a reflector in order to get better vertical dispersion, not so different from what Mirage do. But from the simple spherical shape of the waveguide I would expect horn colorations. In my opinion the pyramid-setup of four midwoofers only slightly improves the vertical radiation pattern compared to a traditional one midwoofer plus reflector setup, but on the other hand causes lobing problems. So in my eyes it is a radical radiation pattern über alles concept. If you really want to clone it, my advice is using a car tweeter with no front plate and four Eighteensound 6ND430 midwoofers (16 Ohm version) in parallel. http://www.eighteensound.it/index.as...roduct&pid=243 As you can see it has a very nice response 45° off axis and should be OK for the pyramid setup.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)