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Old 9th September 2008, 09:40 AM   #101
Coffee is offline Coffee  Czech Republic
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Default Re: Eighteensound ND 2060A

Originally posted by fivestring
This is an excellent sounding driver. Have tried lots of various B&C, Beyma, RCF and P-Audio, but this one beats them all. I am using it in a 30 cm dia tractrix horn and listen to it just slightly off axis. Very transparent, excellent detail, smoothness and quite mellow tone compared to typical harsh titanium PA drivers. Here are some graphs:
[IMG]Click the image to open in full size.[/IMG]

Hello, may I ask you about how many degree "off axis" the "off axis plot" was taken ?

thanks, coffee
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Old 9th September 2008, 09:50 AM   #102
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I believe it was about 15 degrees.
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Old 14th November 2008, 10:01 AM   #103
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Hello guys, just a few words to keep the community posted.

I made some modifications and upgrades on my system based on :

Drivers :

-McCauley 6520 2" compression driver
-JBL 2226H
-Fostex T90A

I had a JBL 2380A horn, it was OK but I had to cut at about 800hz. At that frequency the JBL 2226H was not realy good and fast enough.
I decided to try with a much bigger horn and see how it would sound with a xover at 400hz.

So I made a 250hz horn with a JMLC profile.

The JBL were also mounted in a smaller box with different shape.

I use these amps :
-Loud : Crown K2
-Mids : Lab Gruppen IP450
-Highs : Lab Gruppen IP450

I use digital filtering using a Emu 1820M and Ozone.

The xover frequencies are now 400hz and 8000Hz.

The tuning is first made just by listening to well known recordings and then it is finalized with a Behringer microphone using Adobe Audition.

The final results are really great. This is the kind of sound I was looking for. It is a great combination between PA and High Fidelity. The dynamic is excellent and there are a lot of details. The 3D imaging is also very good (delays and phases are tuned digitally too). The mids and high are tremendous and thanks to the lower xover frequency the 2226H can follow the march... The T90A is amazing for the money by the way, I compared to a T925 which I found less good.

Click the image to open in full size.

Click the image to open in full size.Click the image to open in full size.

"That's why we like you Mulder. Your ideas are weirder than ours."
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Old 14th November 2008, 10:51 PM   #104
CLS is offline CLS  Taiwan
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Beautiful horn!

You are a very capable carpenter I guess
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Old 15th November 2008, 02:04 AM   #105
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usa_satriani, very nice speakers!
I like that you've made horns separately from woofers.
I don't know if vibrations from woofer would affect sound of hf unit,
but it's better to keep them separate just in case
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Old 15th November 2008, 08:43 AM   #106
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Hello there, thanks for the comments.

Yes I thought it would be better to do separate box for the horn and the woofer. The horn is made of MDF, the exponential part from plywood and it is filled with cat litter ( lighter than sand). So it does not vibrate, it would be almost impossible to do so, it is really neutral, you got the sound of the compression. Funny because yesterday in the garage of a friend we looked at several Altec horns, and they resonate so much....

I was not intending to do peaces of art but I did as good as I could with my tools. I wanted something that would work and would suit my standards (speaking of sound not design).

Regards, Greg.

PS : here is the former version with JBL 2380A horns and bigger boxes :

And with Fostex FE208 Sigma horn mounted :
"That's why we like you Mulder. Your ideas are weirder than ours."
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Old 15th November 2008, 12:24 PM   #107
tinitus is offline tinitus  Europe
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Very nice
Why I tend to call it a setup and not speaker I dont know

About the 2" driver, though I dont know it my money will be on the FaitalPro HF14AT, though its a 1.4" and not really cheap either

btw, nice info on the T90A...any info on the FT96H?
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sometimes we know very little, and sometimes we know too much
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Old 16th November 2008, 08:21 AM   #108
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I used to own the FT96H and it is a good supertweeter, very smooth and quite warm. The T90A is more detailled and can offer more micro dynamics. Its sound is more "cutting"
"That's why we like you Mulder. Your ideas are weirder than ours."
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Old 20th April 2013, 07:23 AM   #109
Rewind is offline Rewind  Sweden
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Originally Posted by Radian View Post
Hi ??? Hauke,

I never used ribbons because the ones that I can afford are not
efficient enough to match my tractrix horns.
I want to stay with passive 6db crossovers if possible. In domestic
situations these provide a very good transition and phase if the drivers are well behaved.
I will however compare passive to active just for knowing what is
possible. I have made my own boards of modified Marchand
crossovers but they still need to be populated. Time is just not
something I have in spades.

Will that be passive xo with 1000W class D that the true ribbon likes to not distort, or passive xo with 7.5W tube amp that the CDs like to sound smooth?
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Old 26th June 2013, 01:25 PM   #110
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Can anyone recommend the best budget 2" drivers available in UK/Europe.

As low as can go for as close to 200ea as possible.

This will be married to some handmade wooden horns (Le Cleac'h maybe Tractrix) with a cut off of my choosing.

So many to choose from, are there any stand out winners?
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