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Old 24th August 2008, 07:55 PM   #1
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Default di-pole front horn

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.
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Old 24th August 2008, 07:58 PM   #2
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Default Plans for the di-pole

designed and provided by Head1962.
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Old 24th August 2008, 09:39 PM   #3
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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...
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Old 24th August 2008, 10:10 PM   #4
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Default 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!!!
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Old 25th August 2008, 05:48 AM   #5
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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..
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Old 25th August 2008, 07:43 AM   #6
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Here is a picture of head1962's di-pole front horns.
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Old 25th August 2008, 07:45 AM   #7
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and another.......
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Old 25th August 2008, 10:30 AM   #8
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Default 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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Old 25th August 2008, 10:37 AM   #9
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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.
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Old 25th August 2008, 10:54 AM   #10
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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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