Omnidirectional enclosures and problems encountered

Sir Trefor · 25th December 2005, 02:54 AM

All I really mean by "omnidirectional enclosure" is an enclosure that has speakers on both sides. I have some real omnidirectional Linaeum tweeters and I want to build some speakers to match. I have some two way speakers that are constructed in the manner I have desribed, they sound fine,but they are ugly and I don't want to use them.

Are there any problems with building speaker's like this? Should the opposing speakers be wired 180 degrees out of phase? Any suggested articles or reading?

Thanks

bjackson · 25th December 2005, 04:17 AM

Neither of what you describe are omni directional.

Speakers on both sides are bipoles. Dipoles only have one speaker on the front and no back wall of the enclosure.

A lineaum tweeter is a dipole.

Omnidirectional speakers usually fire upwards into a cone that disperses the wave.

Sir Trefor · 25th December 2005, 05:37 AM

Quote:

Originally posted by bjackson
Neither of what you describe are omni directional.

Speakers on both sides are bipoles. Dipoles only have one speaker on the front and no back wall of the enclosure.

A lineaum tweeter is a dipole.

Omnidirectional speakers usually fire upwards into a cone that disperses the wave.

Sorry to sound like a complete newbie; I really know pathetically less than I should about speakers.

I have edited my post to make more sense

Code:

I WANT TO LEARN ABOUT CONSTRUCTING BIPOLE SPEAKERS.

Code:

 DOES ANYONE HAVE ANY SUGGESTED BOOKS, ARTICLES, WEBPAGES, OR ANY OTHERWISE HELPFUL INFORMATION?

el`Ol · 7th January 2006, 07:18 AM

Hello!

I searched for linaeum tweeters and just found a closed version at aura. What is the sensitivity of the dipolar one?

regards, Oliver

AnthonyPT · 26th January 2006, 07:02 AM

Hi

Why not have a look at this site
and maybe make a DIY miniature version
to meet your needs. There is very little
to a Linaeum. I have 8 and I am pleased
with the performance. Even better with
Neo magnets and silk diaphrams.

regards
AnthonyPT

http://home.tele2.fr/mon-site-perso/fig3.htm

exhausted mule · 26th January 2006, 07:14 AM

not only does this crazy fool know his stuff.

it seems like he actually PREFERS dipoles over conventional speakers.

check out his site at:

http://www.linkwitzlab.com/

AnthonyPT · 26th January 2006, 05:14 PM

Hi
While SL is indeed one of the major
successful advocates of dipoles and also to a lesser
extent omnis (Pluto) He seems to prefer
high frequencies about 1.5k or so come from
monopole drivers. Of course others such as
the Alons can go dipole all the way and it seems
now the new Pipedream non-array speakers have
Hf dipoles and so do the opposite! It is
interesting to note that tri-amplification is
SL's preferred solution and he is also one of the
few who managed a Passive Dipole system in
the Audio Artistry Vivaldi. I must say I am a dipole fan
even if I am doing a slightly different
approach using a dipole array of 16 3" drivers
for the midrange. I recall a very nice dipole setup was a
WAR Audio passive Cabasse/Raven 3.1 Speaker The panel
was about 50mm+ (2in) thick! Oh yes I still like my Linaeums.
Now that they are not available I may have to build some.
I am currently using a set of small spheres (in Pluto style)
omni mode crossing to a linaeum for the hf. It serves me well
in my bedroom !
Read the SL Pluto notes and overcome some of the omni hurdles
it seem Mr L has !

Its all about design optimising and your own prefences.

Regards
AnthonyPT

http://www.audioartistry.com/products/vivaldiSpecs.html

sdclc126 · 26th January 2006, 08:18 PM

Quote:

Originally posted by Sir Trefor

Sorry to sound like a complete newbie; I really know pathetically less than I should about speakers.

I have edited my post to make more sense

Code:

I WANT TO LEARN ABOUT CONSTRUCTING BIPOLE SPEAKERS.

Code:

DOES ANYONE HAVE ANY SUGGESTED BOOKS, ARTICLES, WEBPAGES, OR ANY OTHERWISE HELPFUL INFORMATION?

Here is a project you can look at - hopefully you will find it useful!

http://www.t-linespeakers.org/projects/tlB/index.html

Scottmoose · 27th January 2006, 09:10 AM

And Dave's other site: www.planet10-hifi.com

Have a look at the Box Plans section. Dave is the bipole master, and he has gathered a like-mided set of people who explore this design method. It has much to be said in its favour, and very few downsides.

Best
Scott

25th December 2005, 02:54 AM	#1
Sir Trefor diyAudio Member Join Date: Sep 2004 Location: somewhere in California	Omnidirectional enclosures and problems encountered All I really mean by "omnidirectional enclosure" is an enclosure that has speakers on both sides. I have some real omnidirectional Linaeum tweeters and I want to build some speakers to match. I have some two way speakers that are constructed in the manner I have desribed, they sound fine,but they are ugly and I don't want to use them. Are there any problems with building speaker's like this? Should the opposing speakers be wired 180 degrees out of phase? Any suggested articles or reading? Thanks __________________ "This is just my 'one cent'; I haven't got two to give."

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25th December 2005, 04:17 AM	#2
bjackson diyAudio Member Join Date: Dec 2004 Location: Illinois	Neither of what you describe are omni directional. Speakers on both sides are bipoles. Dipoles only have one speaker on the front and no back wall of the enclosure. A lineaum tweeter is a dipole. Omnidirectional speakers usually fire upwards into a cone that disperses the wave.

7th January 2006, 07:18 AM	#4
el`Ol diyAudio Member Join Date: May 2005 Location: Bavarian Forest	Hello! I searched for linaeum tweeters and just found a closed version at aura. What is the sensitivity of the dipolar one? regards, Oliver

26th January 2006, 07:14 AM	#6
exhausted mule diyAudio Member Join Date: Jul 2005 Location: canada	not only does this crazy fool know his stuff. it seems like he actually PREFERS dipoles over conventional speakers. check out his site at: http://www.linkwitzlab.com/

26th January 2006, 05:14 PM	#7
AnthonyPT diyAudio Member Join Date: Oct 2004	Hi While SL is indeed one of the major successful advocates of dipoles and also to a lesser extent omnis (Pluto) He seems to prefer high frequencies about 1.5k or so come from monopole drivers. Of course others such as the Alons can go dipole all the way and it seems now the new Pipedream non-array speakers have Hf dipoles and so do the opposite! It is interesting to note that tri-amplification is SL's preferred solution and he is also one of the few who managed a Passive Dipole system in the Audio Artistry Vivaldi. I must say I am a dipole fan even if I am doing a slightly different approach using a dipole array of 16 3" drivers for the midrange. I recall a very nice dipole setup was a WAR Audio passive Cabasse/Raven 3.1 Speaker The panel was about 50mm+ (2in) thick! Oh yes I still like my Linaeums. Now that they are not available I may have to build some. I am currently using a set of small spheres (in Pluto style) omni mode crossing to a linaeum for the hf. It serves me well in my bedroom ! Read the SL Pluto notes and overcome some of the omni hurdles it seem Mr L has ! Its all about design optimising and your own prefences. Regards AnthonyPT http://www.audioartistry.com/products/vivaldiSpecs.html

27th January 2006, 09:10 AM	#9
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	And Dave's other site: www.planet10-hifi.com Have a look at the Box Plans section. Dave is the bipole master, and he has gathered a like-mided set of people who explore this design method. It has much to be said in its favour, and very few downsides. Best Scott

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