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Old 25th September 2012, 04:33 PM   #1
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Default Horn for Radian 950pb

Hi Everybody

I recently bought a pair of the wonderful Radian 950pb 2" compression driver - and it's simply stunning. My JBL 2435HPL is nothing compared to the Radian.

However, I'm not quite pleased with the serious beaming of my 400 Hz tractrix horns.
The dispersion doesn't match my midrange speaker very good, either.

Therefore: I could really use some help picking up the best possible horn for my Radians, which isn't extremely huge. I would prefer a width less than 16 inches.

I use TAD TL-1601a for lows and TAD TM-1201H for the mids.

Appreciate any suggestions.

Thanks,
Jeppe
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Old 25th September 2012, 05:18 PM   #2
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What is the crossover frequency you are hoping for? 16" seems pretty small... especially for a driver capable of being crossed over at a fairly low in frequency.

If space wasn't a concern I would go for something like this:

E-JMLC-300

there are quite a few nice horns for sale on that web page though... might be worth browsing around...

Last edited by Josephjcole; 25th September 2012 at 05:23 PM.
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Old 25th September 2012, 05:37 PM   #3
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I'm aiming at 800 - 1200 Hz. I have looked at horns.pl and I like the biradial, but it's rather big.

The E-JMLC is kinda ugly, isn't it?

Thanks,
Jeppe
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Old 25th September 2012, 06:35 PM   #4
pos is online now pos  Europe
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This horn would probably be perfect for your needs:
Behringer electric - Behringer electric Horn

This is a H9800 clone (JBL S9800) fitted for the 1.4" exit of the 950PB (with the 1.4"/2" adapter removed, ie "951PB"). This is a biradial horn with good directivity behavior up to the UHF (thanks to the 1.4" exit), and good horizontal control down to ~800Hz
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Old 25th September 2012, 07:07 PM   #5
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pos:

That is a cool horn - and i love biradials

I'm not familiar with the 951pb - and is that horn suited for my 2" Radians or does it come with an adaptor?

Many thanks,
Jeppe
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Old 25th September 2012, 08:32 PM   #6
pos is online now pos  Europe
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As I understand it the 951PB is just a 950PB with the integrated 1.4"/2" adapter removed.
I don't know how you are supposed to do that, but you can ask Guido (the maker of the horn). He is also a member of the audioheritage.org forum.
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Old 25th September 2012, 08:44 PM   #7
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Jeppe - Why not keep your 400 Hz tractrix and integrate a tweeter where it starts to beam (8000 Hz?) rather than replace the horn? I ended up adding an upper midrange (650 Hz JMLC) to my 300 Hz tractrix in addition to a tweeter.

I'm curious how you're running your TAD 1201s...I have a pair that I'm looking to try out either in a large horn or a sealed box.
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Old 25th September 2012, 09:13 PM   #8
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pos: I think this sounds quite invasive, but I'll try emailing him. Thanks!

green heron: Because the tractrixs dispersion is a mismatch are the frequecy where I like to XO. And 400 Hz tractrix is quite big - mine is in carbon fiber and stack birch plywood.

Click the image to open in full size.

Quite nice looking, but just too big. I'm not using the radial horn any more.

The 1201s are fantastic in a sealed enclosure. Way better than the Radians up to about 1kHz.

Have thought of replacing the Radian with the Beyma TPL-150H, but real life measurements seems to differ a bit from spec'd by Beyma. Haven't heard it either.

Rgs,
Jeppe
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Old 25th September 2012, 09:35 PM   #9
ScottG is offline ScottG  United States
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Quote:
Originally Posted by virious View Post

I use ..TAD TM-1201H for the mids.

You Lucky B@stard.



Maybe a custom 2" exit E-OSWG-15 from Autotech:

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Old 25th September 2012, 09:55 PM   #10
kevinh is offline kevinh  United States
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This horn has a 2" throat:
AutoTech Iwata-300 - AutoTech Horns - Horns DIY Sound Group
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