di-pole front horn

cervelorider · 24th August 2008, 07:55 PM

As requested on the gallery thread, here is a new thread for the di-pole front horn. Again, it should be noted that this uses a full range driver with no crossover, however, they definitely need some help from a powered sub on the bottom end. IMO, without a sub, one would be dissapointed.

cervelorider · 24th August 2008, 07:58 PM

designed and provided by Head1962.

Scottmoose · 24th August 2008, 09:39 PM

Hmm. Here's a very rough FR plot, although this doesn't account for the dipolar radiation pattern. Not bad -a kind of very large lower-midrange horn. Certainly interesting -I bet it projects vocals nicely.

The dip over ~800Hz might be the trickiest thing to deal with -crossing to LF units should be simple enough.

Making a compound horn with these could be interesting...

cervelorider · 24th August 2008, 10:10 PM

Vocals are so good, they make you want to weep.

Incidently, the more I have listened to them, about 3 days (not continuous as much as I would like to) I believe the 800hz hump is audible. It only seems to rear its head with certain recordings however & isn't bothersome most of the time. I would say perhaps due to the dipole radiation and the big sense of space and air it creates, that one of my favorite groups, The Canadian Brass, sound incredible with these. A big horn projecting horns....duh.

BTW, we need to encourage head 1962 to post a photo of his finished pair of di-poles. They are Gorgeous!!!

head1962 · 25th August 2008, 05:48 AM

see if this works...

anyway..
You can see them here.
http://timemachines4.blogspot.com/
If someone tells me how to attach images...

bp2.blogger.com/_eePk-f1Usdk/R-phKfMp5WI/AAAAAAAAARE/j5T1WAOVing/s1600-h/DSCN2626-1.JPG[/IMG]

bp2.blogger.com/_eePk-f1Usdk/R-pgkfMp5TI/AAAAAAAAAQs/xi1ENen-oeg/s1600-h/DSCN2623-1.JPG[/IMG]

I'll post the diagram of the 6EM7 SE today too..

cervelorider · 25th August 2008, 07:43 AM

Here is a picture of head1962's di-pole front horns.

cervelorider · 25th August 2008, 07:45 AM

and another.......

hornophile · 25th August 2008, 10:30 AM

Hello,

Do you think this kind of front horn could sounds nice with a "cheap" subwoofer , like the ones you can buy in Madisound or Partexpress for around 200$ ?

head1962 · 25th August 2008, 10:37 AM

Never tried any of these...
The cheaper, the less low... most of the time
The speaker is not made for huge WATTS anyway, so I'd guess you do need a HUGE sub woofer either.
Something from 150 down to 50 or so.
My Klipsch is only just on and it does not go up high enough, so there is a hole...
Something a lot smaller then the Klipsch would be more then ok.

Scottmoose · 25th August 2008, 10:54 AM

As suggested, I reckon you'd struggle with some of the cheaper subs. You'd need to cross over at about 200Hz, & not all that many can motor up that high -certainly not with grace. You'd be better off with a pair of 10in - 15in Eminence drivers in a suitable box or baffle & run a passive XO if you can't afford plate-amps etc.

24th August 2008, 10:10 PM	#4
cervelorider diyAudio Member Join Date: Oct 2006 Location: Ohio	More listening impressions Vocals are so good, they make you want to weep. Incidently, the more I have listened to them, about 3 days (not continuous as much as I would like to) I believe the 800hz hump is audible. It only seems to rear its head with certain recordings however & isn't bothersome most of the time. I would say perhaps due to the dipole radiation and the big sense of space and air it creates, that one of my favorite groups, The Canadian Brass, sound incredible with these. A big horn projecting horns....duh. BTW, we need to encourage head 1962 to post a photo of his finished pair of di-poles. They are Gorgeous!!!

25th August 2008, 10:30 AM	#8
hornophile diyAudio Member Join Date: Dec 2007	to be partnered with a "cheap" subwoofer ? Hello, Do you think this kind of front horn could sounds nice with a "cheap" subwoofer , like the ones you can buy in Madisound or Partexpress for around 200$ ?

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25th August 2008, 05:48 AM	#5
head1962 diyAudio Member Join Date: Aug 2008	see if this works... anyway.. You can see them here. http://timemachines4.blogspot.com/ If someone tells me how to attach images... bp2.blogger.com/_eePk-f1Usdk/R-phKfMp5WI/AAAAAAAAARE/j5T1WAOVing/s1600-h/DSCN2626-1.JPG[/IMG] bp2.blogger.com/_eePk-f1Usdk/R-pgkfMp5TI/AAAAAAAAAQs/xi1ENen-oeg/s1600-h/DSCN2623-1.JPG[/IMG] I'll post the diagram of the 6EM7 SE today too..

25th August 2008, 10:37 AM	#9
head1962 diyAudio Member Join Date: Aug 2008	Never tried any of these... The cheaper, the less low... most of the time The speaker is not made for huge WATTS anyway, so I'd guess you do need a HUGE sub woofer either. Something from 150 down to 50 or so. My Klipsch is only just on and it does not go up high enough, so there is a hole... Something a lot smaller then the Klipsch would be more then ok.

25th August 2008, 10:54 AM	#10
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	As suggested, I reckon you'd struggle with some of the cheaper subs. You'd need to cross over at about 200Hz, & not all that many can motor up that high -certainly not with grace. You'd be better off with a pair of 10in - 15in Eminence drivers in a suitable box or baffle & run a passive XO if you can't afford plate-amps etc.

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