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today the first pair of mdf tractrix horns got ready. They will still be painted. They do have 49cm diameter outside, and are useful above 400hz.
in a couple of weeks a big wood lathe will be finished, and with it i will be able to make up to 98cm diameter horns.
the driver at my homepage is the Radian 950pb, and soon i will know how it will sound.....
Angelo
Follow Ups:
Hi.
I'm very curious what the result will be and how it will sound with the Radian driver. I have 2 tractrix horns here and still need to decide which driver to use!
Jacob
i guess it will take some time, until i can tell you. i am searching still some parts to make the filter, and start to tweak around. but when i can tell something, i certainly will post here. good is that i can compare then with the orpheans.
best Angelo
Well, keep us updated. you said you can compare them to the Orpheans? do you have the Orpheans yourself?
BTW what are you to use for the bass section? I presume you are making a 2-way?
hi
yes, i have the orpheans . i will use a beyma 15", lx60, active, up the 300hz/24db, and above the horn.
In my opinion, the BMS4592 needs a biger horn, to work optimal until 300hz, like the Jabo72. In the 56cm diameter horn, it would work better until 500hz, no more. The Radian is the same. Using a horn up to 80cm diameter, like Vincent Brient, it can go as low as 200hz.
I will post abought my results here.
best Angelo
Interesting, a similar set-up as I would like to use. Only I will use a 15inch Ciare driver. I was also thinking of using the Radians. You said you are going active, 24dB at 300Hz for both the woofer and horn I presume. Are you going to use a DSP?
Jacob
hello Jacob
i visit recently Ciare factory. You see the pictures at my fotoblog.
their pro subwoofers are weatherprotected for outdoor use. It would be interesting if they would make a woofer only with papercone, without impregnating, and use a stronger motor. They will make a prototype for me.
In the first pair of Sonatas,I go active with the bass, and the orpheans from BD-design witch i use come with built in crossover, crossed at 300hz, too.
The Radians, crossed at 300hz, will need a bigger horn than i am using in this system. What horn do you pretend to use ?
Probably still this week i will have pictures, with this system finished.
rds Angelo
Hi,
I'm planning to cross at 500Hz using a JABO KH50B horn. I'm planning to go either 12dB/oct passive or go active using DSP, did not decide yet.
Jacob
hello Jacobthe resonance frequence of the radian 950pb is 550hz. So the best crossover frequency is 1000hz. I will use it first in a 4way speaker, crossed at this frequency. This does not meen with 500hz it will not work well and sound nice. if you did not buy it yet, and need a cheap source, you can send me a email.
best Angelo
Cool
What drivers are you going to use with them? How are you going to attach the drivers?
Cheers. Doug
PS. Did you enjoy cleaning up all that MDF dust and swarf?
hi Doug
you can see on my blog the 2", Radian950pb driver, wich i will try out first. The driver is mounted on 3 slices, wich are screwed on the horn. The wholes for the driver are not shown on this picture.
The worst is not to clean up the MDF dust, but to avoid to inhalate it while working. To protect with a mask is a must.
best Angelo
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