I am after a driver to use from hopefully 150 Hz to around 1000 Hz in a yet to be built plywood 100cm tractrix horn. I have learnt the basics on Hornresp and would like some drivers to model.
Let me know your thoughts and drivers I can simulate.
Let me know your thoughts and drivers I can simulate.
3GGG
Stereolab in Germany suggest Fostex 206E
cf140Hz f. Fostex UltraFi - STEREO LAB
I'd love to buy the Eleven Horns 140Hz Mahogany horn.....90Kgs, 90cm diameter...!!!
Eleven Horns - lower midrange horn.... 140 Hertz Le Cleac'h...
Andrew
Sydney
Home
Stereolab in Germany suggest Fostex 206E
cf140Hz f. Fostex UltraFi - STEREO LAB
I'd love to buy the Eleven Horns 140Hz Mahogany horn.....90Kgs, 90cm diameter...!!!
Eleven Horns - lower midrange horn.... 140 Hertz Le Cleac'h...
Andrew
Sydney
Home
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The 130 to 150Hz horns around the 800/900mm diameter seems about right.
Could the 40" horn be 100Hz and not 200Hz?
Could the 40" horn be 100Hz and not 200Hz?
Sorry Andrew,
OT again: Deleted my previous post as it was to much OT.
Note this is Le´Cleach. 40" is exactly what you get when using Jean-Michels spreadsheet for Fcut=200Hz. Ie the Elevens are compromises.
Also the Stereolabs seems to be the rip-off of the century.
OT again: Deleted my previous post as it was to much OT.
Note this is Le´Cleach. 40" is exactly what you get when using Jean-Michels spreadsheet for Fcut=200Hz. Ie the Elevens are compromises.
Also the Stereolabs seems to be the rip-off of the century.
The following drivers are ones that I've either built with, or know first hand that work very well in horns.
Eminence Delta Pro-8A or 8B, the 8A is 8 ohms, the 8B is 16 ohms
Ciare 6.38NdW
Ciare 8.50NdW
Faital M5N12-80, it is 12 ohms
Faital W6N8-120
Beyma 6MI100
18 Sound 6ND410
18 Sound 8M400
18 Sound 10M600
B&C Speakers 8PE21
B&C Speakers 10MD26
Your overall goal will determine which driver will meet your needs the best.
Eminence Delta Pro-8A or 8B, the 8A is 8 ohms, the 8B is 16 ohms
Ciare 6.38NdW
Ciare 8.50NdW
Faital M5N12-80, it is 12 ohms
Faital W6N8-120
Beyma 6MI100
18 Sound 6ND410
18 Sound 8M400
18 Sound 10M600
B&C Speakers 8PE21
B&C Speakers 10MD26
Your overall goal will determine which driver will meet your needs the best.
Hey 3GGG,
As I understand it you will use Hornresp for your design. Remember that "Constant Directivity" is useless(almost) except for basshorns, you should use "Directivity" at preferred angle instead.
I guess this is more of a midbass design for 2*Pi. A full 130Hz Tractrix has a min. length of 66cm2 and a max At of 130cm3.
As I understand it you will use Hornresp for your design. Remember that "Constant Directivity" is useless(almost) except for basshorns, you should use "Directivity" at preferred angle instead.
I guess this is more of a midbass design for 2*Pi. A full 130Hz Tractrix has a min. length of 66cm2 and a max At of 130cm3.
Thanks guys
JLH, thats a nice list whicch should give me a few hours plaaying around with.
My overall goal is to build the most detailed neutral sounding set of horns.
For under 150Hz i am yet to determine what to do. I will build the remainder of the system first and see how it goes in room.
The hard part is knowing where to start as each component links onto the next, therefore I have decided to start with the midbass horn.
JLH, thats a nice list whicch should give me a few hours plaaying around with.
My overall goal is to build the most detailed neutral sounding set of horns.
For under 150Hz i am yet to determine what to do. I will build the remainder of the system first and see how it goes in room.
The hard part is knowing where to start as each component links onto the next, therefore I have decided to start with the midbass horn.
3GGG
For under 150Hz, why not try the GOTO bass horn, which Ming Su and I developed. It's good for 300Hz, and you can run the Altec 416 driver. I could cobble together a flat-pack kit...
I've also developed a non CNC'd/sliced model...using traditional flat panels. Cheaper option in either MDF or 25mm ply.
Andrew.
Sydney.
For under 150Hz, why not try the GOTO bass horn, which Ming Su and I developed. It's good for 300Hz, and you can run the Altec 416 driver. I could cobble together a flat-pack kit...
I've also developed a non CNC'd/sliced model...using traditional flat panels. Cheaper option in either MDF or 25mm ply.
Andrew.
Sydney.
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Is the driver going to be compression loaded? Or is it simply a speaker firing into a horn. IOW, is the throat area "smaller" than the driver's area?
416 specs here
http://www.greatplainsaudio.com/downloads/416_8C.pdf
Throat is 585cm2, or 90 square inch
http://www.greatplainsaudio.com/downloads/416_8C.pdf
Throat is 585cm2, or 90 square inch
Atisley, the BVR is definately going to get a look for lower duties. i should have grabbed Tuyens Altecs he sold for $500 a pair;-)
Withtarragon, most of the modeling i have been doing is with a smaller throat area and compression of around 2 to 2.5:1
Withtarragon, most of the modeling i have been doing is with a smaller throat area and compression of around 2 to 2.5:1
3GGG
I should have got his 416's as well.......now I'll go with Great Plains.
Here's Ming's plot of the GOTO bass unit....nice and flat from 30Hz to 300....at over 100dB....nice.
I should have got his 416's as well.......now I'll go with Great Plains.
Here's Ming's plot of the GOTO bass unit....nice and flat from 30Hz to 300....at over 100dB....nice.
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I'm currently designing something close - a 120-700Hz hyperbolic. You might want to consider the B&C 8PS21 , I can't comment on the sound yet as I haven't built it , but it models well for near-axis directivity unlike the 8PE21 which has a rather too rising response on my sims . The distortion curves on that (8PS21) driver look nice if you check on Zaphaudio .
I already have a pair of 8PE21 and will test them on the first build of this horn when I can .
JLH has much more experience of building & using this driver and others so perhaps he can comment on this .
I attach my current input file for info .
MJ
I already have a pair of 8PE21 and will test them on the first build of this horn when I can .
JLH has much more experience of building & using this driver and others so perhaps he can comment on this .
I attach my current input file for info .
MJ
Hey 3GGG -
I notice you used 4-Pi space on your design there.
You are being pessimistic about the low-end in that case, since you are much more likely going to be 2Pi unless you put the horn on a pole in the middle of a field !!
Mark
I notice you used 4-Pi space on your design there.
You are being pessimistic about the low-end in that case, since you are much more likely going to be 2Pi unless you put the horn on a pole in the middle of a field !!
Mark
Cheers Mark. I was wondering if 2PI may be more suitable. Thw horns will be large but they should atleast fit inside a room;-)
The Ciare 8.50NdW is a real bone crusher when pushed hard. It has a crazy mixture of sensitivity and Xmax. You'll be able to hit over 120dB easy without even getting close to Xmax. Tone wise, at low volume levels it can sound a little fat or dull. The most articulate of the drivers I listed is the Beyma 6MI100. The 6MI100 can approch high dollar GOTO drivers if it is equiped with a good phase plug. Good middle of the road drivers are 8PE21, M5N12-80, and 8M400. The 10MD26 has the most even tone balance and can play any music material well. It just depends on what you want from your system.
Thanks JLH, your inside knowledge will help alot in my decision making process.
I listen at low to moderate levels and am looking for quality over quantity. The Beyma 6MI100 will get a look in.
I will be running a compression drive in another horn above this, maybe 400Hz tractrix and a Yamaha 6681, Tad2001 or JBL 2441
I listen at low to moderate levels and am looking for quality over quantity. The Beyma 6MI100 will get a look in.
I will be running a compression drive in another horn above this, maybe 400Hz tractrix and a Yamaha 6681, Tad2001 or JBL 2441
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