Collaborative Tapped horn project - Page 78 - diyAudio
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Old 18th December 2007, 12:37 AM   #771
JSS is offline JSS  Canada
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Hi Freddi,

I have a Magnum12HO that I am currently building. Yours is a newer version of my driver, I plugged in your specs to my horn and response is actually a little better. All in a 13.5x15x72 inch box.

Jeff
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Old 18th December 2007, 01:07 AM   #772
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Quote:
Originally posted by JSS
Hi Freddi,

I have a Magnum12HO that I am currently building. Yours is a newer version of my driver, I plugged in your specs to my horn and response is actually a little better. All in a 13.5x15x72 inch box.

Jeff

Hi, do you know where I can find the specs of the Magnum12HO compared to the 4012?

Great thread btw, horns are awesome for efficiency.
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Old 18th December 2007, 01:08 AM   #773
freddi is offline freddi  United States
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hi Jeff - if you get a bit of time would you post a sketch or send one please? I"m not seeing things very well - also - might you run the sim in 2pi ? - -Best Freddy
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Old 18th December 2007, 01:37 AM   #774
JSS is offline JSS  Canada
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Freddi, here's the 2Pi, I scribbled the dimensions on paper, will look for it and post.

Mike, links below:
www.eminence.com/pdf/definimax-12ho.pdf
http://speakerstore.nl/luidsprekers/...MAGNUM12HO.pdf
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Old 18th December 2007, 02:26 AM   #775
freddi is offline freddi  United States
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than you so much - looks strong even in half-space - - did you make comparisons to 7ft pipe in the same footprint and come up with 6ft as best compromise? wonder what a k (or Fulmer) opening would do to its response other than possibly shorten the path? Best, Freddy
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Old 18th December 2007, 03:45 AM   #776
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Quote:
Originally posted by JSS
Freddi, here's the 2Pi, I scribbled the dimensions on paper, will look for it and post.

Mike, links below:
www.eminence.com/pdf/definimax-12ho.pdf
http://speakerstore.nl/luidsprekers/...MAGNUM12HO.pdf
Hey, thanks for the PDF links... The specs are so similar I think the speakers are almost identical, with maybe a few tweaks on the 4012...

The results look good tho. I've seen a few normal horn designs for this driver, namely BFM's Tuba30 and Tuba36's designs, and it looks like a tapped horn can achieve similar results in smaller box... I think the fact that the 4012 is already used in a horn design shows that it is a good driver for this sort of thing... high Fs, good xmax, etc.
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Old 18th December 2007, 04:31 AM   #777
freddi is offline freddi  United States
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wonder if 4012HO's acutal overhang = 4.8mm and the figure has been pumped up to 6.2? are there drop-in drivers for this horn which have more xmax? - where would 4.8mm peak limit at in-room and in practical terms?
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Old 18th December 2007, 04:37 AM   #778
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Peerless XLS 830564 is very good in a 30Hz TH.
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Old 18th December 2007, 04:40 AM   #779
freddi is offline freddi  United States
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didn't see them in US - but not looked hard
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Old 18th December 2007, 05:35 PM   #780
freddi is offline freddi  United States
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btw since this 72"x15"13.5" cabinet is in the same size range as Fitzmaurice's "Table Tube" heres a sim of that in AJ
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