Matrix multicell horns - deconstruction and reproduction attempts
- Thread starter Tsingtao_1903
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Nice. Of course, now the next edition is gonna need a new Appendix: Printing Horns... thanks to you.Printed the straight horn adapter. Received "The Book". Could not pass up a photo opportunity.
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About that, I am going to "experiment" modifying my printer to improve the printing speed - by quite a bit. For SCIENCE!
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Been chewing on how to make the throat/adapter out of wood for a while....
Came up with a 4-piece construction. The body will be machined in two pieces. The throat and the mouth piece will be finger jointed to the body.
Made one out of wood for a 2" driver just for test. The mouth piece came together well. The throat piece still needs some work.
Came up with a 4-piece construction. The body will be machined in two pieces. The throat and the mouth piece will be finger jointed to the body.
Made one out of wood for a 2" driver just for test. The mouth piece came together well. The throat piece still needs some work.
The shape is much too complicated. I am going to simplify the shape and increase the tolerance to about 6 thousands. Overall, I think the finger joints will be plenty strong.
So, an opportunity came up for a nice set of Electro Voice DH1A drivers - I snagged them immediately.
Modeled and printed an adapter for 2" going into 1" throat. Bolted on to the 3D printed horn for sound test. For size reference, the EV DH1A is 10" across the widest part, weighs ~23lbs.
The driver was connected directly to a sound source. No cross over. The sound is nice and crisp. No fatigue, no "honking". I am happy.
A few more modifications, then, this project is done!
BTW, the VCDH and the wooden adapter are taken up all my bench space. So, these guys are on the floor.
Modeled and printed an adapter for 2" going into 1" throat. Bolted on to the 3D printed horn for sound test. For size reference, the EV DH1A is 10" across the widest part, weighs ~23lbs.
The driver was connected directly to a sound source. No cross over. The sound is nice and crisp. No fatigue, no "honking". I am happy.
A few more modifications, then, this project is done!
BTW, the VCDH and the wooden adapter are taken up all my bench space. So, these guys are on the floor.
This horn design is basically done. Instead of three identical horn sections, there will now be one center section and two outside sections. The two outside pieces are identical, just flipped. They are without the outside mounting tabs; A small price to pay to make the horn assembly look better. The 1" opening throat piece can be straight, 45 degrees, screw-on or flange. The last piece is a stand to be bolted on to the tabs at the bottom side of the throat. All pieces are 3D printable.
Thanks, but, that may take a while. Too many projects already in the queue...
To do the horn justice, I am thinking about rotating out my main system, going with a different set up. Already have the EV T350s for highs, 3D printed horns for mids (or a set of wood WE 26A's/Sato horns?) using EV DH1A's, and thinking about building the WE TA-7331-A baffles for lows. Too many choices...
For now, got to finish the VDCH. Will have updates soon.
I plan to. But, don't have any 1" drivers on hand. Currently bidding on a pair...
I can lend you some. PM me.
That's very nice of you - Thanks. No need. I am now testing it using a 2" driver with an adapter. My 1" driver will arrive next week... Also, the horn was designed to cross between 800 - 1000 Hz. My system is not set up for that.
You are close enough - want to take the horn and test it yourself?
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I'd love to!
Great! Plan to come by next weekend. I am going to print out another horn assembly. What kind of driver mount do you need?
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I'll be mounting it to Altec 1" drivers - 808-8a or the 23746 drivers from my 9849 horns.
Too bad you don’t live in AZ.
I think we all want to live in San Marcos!Too bad you don’t live in AZ.
While plywood is not the strongest material out there, it was what I have on hand. Hardwood would be much better for strength. I wanted to do a stress test on this wood throat adapter design using finger joints. This particular adapter was modeled after the WE 22A. The size and dimensions are fairly close. Had to beef up the walls a bit.
Throat flange
Mouth flange
With a ~24lbs EV DH1A driver, mounted about 1" off the bench top. (I was not sure what would happen. Did not want to damage the driver should the test fail.) The thing held and did not break - Whew!
Throat flange
Mouth flange
With a ~24lbs EV DH1A driver, mounted about 1" off the bench top. (I was not sure what would happen. Did not want to damage the driver should the test fail.) The thing held and did not break - Whew!
So, @gavcnew stopped by yesterday - super cool guy. Among other things, he wanted to try different horns on a handful of drivers. I was going to try to CNC some tractrix wooden horns some time down the road. But, we got to talking...
3D printable 400Hz tractrix horn. My 3D printer is not big enough to print this horn in one go. (Wood textures just for inspiration.) The design below comprises of three pieces: the throat piece and two identical mouth pieces. The pieces have lap joints to be glued together.
We also christened the modified 3D printable KS12024 horn as the WP12024 horn. The KS designation was used by WE for their own designs built/manufactured by outside suppliers to WE specifications; WP designation was used for outside designs/products with change controls/approvals by WE.
Clarification: The design cut-off frequency is 400Hz. In practice, the horn should be crossed about an octave higher. 800 - 1200Hz.
3D printable 400Hz tractrix horn. My 3D printer is not big enough to print this horn in one go. (Wood textures just for inspiration.) The design below comprises of three pieces: the throat piece and two identical mouth pieces. The pieces have lap joints to be glued together.
We also christened the modified 3D printable KS12024 horn as the WP12024 horn. The KS designation was used by WE for their own designs built/manufactured by outside suppliers to WE specifications; WP designation was used for outside designs/products with change controls/approvals by WE.
Clarification: The design cut-off frequency is 400Hz. In practice, the horn should be crossed about an octave higher. 800 - 1200Hz.
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I'm looking forward to hearing some opinions regarding the sound of the WP12024 horn!
