my new diy speakers project

korabetsni · 26th May 2011, 01:44 PM

hello,
I had made many loudspeakers before. this is my new project. 3 way loudspeakers with seas excel drivers.(w26fx001,w15ch001,t29cf002) They are not completed yet. I have almost made the enclosures. they are made from polyester fiber, plywood and MDF. The crossover will be inside the granite base (not on the photos). I have spent about 6 months on it by now. I will update this post when i 'll have completed the speakers.What do you think?

badman · 26th May 2011, 01:52 PM

Is this really new? Because I've seen another "nautilus clone" that looked nearly identical, also using Seas Excel.

But whatever, that's a heck of a lot of work for the cabs, hope they sound as cool as they look. Be sure to cover the tweeter faceplate in thick felt as it looks like you're using a worst-case diffraction scenario for the tweeter (the other drivers should be okay, especially the woofer)

korabetsni · 26th May 2011, 01:58 PM

hi,
yes there are also other people that maked this project. What do you mean worse case scenario for the tweeter?

korabetsni · 26th May 2011, 02:05 PM

hi
can you be more specific about the thick felt please. What do you suggest to do?

hooligan72 · 26th May 2011, 05:16 PM

That's beautiful work. I would love to see some build pictures.

badman · 26th May 2011, 07:13 PM

Note how in the B&W Nautilus, the drivers are large relative to their mounting surfaces, as it is with your woofer, where there's a minimum of "Baffle". A circular baffle has the same distance from the diaphragm to the edge at every point on the circumference, so you get one very heavy diffraction mode. There's quite a bit of documentation on the effects of surface mounting vs. flush-mounting dome tweeters, you can consider this as a worse version of surface mounting. By using felt, you absorb the energy that illuminates this edge, so there's a largely reduced amount of energy to excite the diffraction modes. This also helps reduce off-axis energy somewhat in the crossover range to the mid, which is a good thing in this and most cases.

korabetsni · 26th May 2011, 08:44 PM

here are some build pictures. Many thanks Badman for the explanations.

badman · 26th May 2011, 09:38 PM

wow, very slick, the build is even more impressive than the result

tuxedocivic · 26th May 2011, 10:01 PM

Unreal!

korabetsni · 28th May 2011, 11:53 AM

do you think that i must use damping material? in the midrange cabin maybe? Other 2 people that i know (who made these speakers) did not use any damping material. What is yours opinion?

26th May 2011, 01:52 PM	#2
badman Custom Title diyAudio Member Join Date: Sep 2003 Location: Sunny Tustin, SoCal	Is this really new? Because I've seen another "nautilus clone" that looked nearly identical, also using Seas Excel. But whatever, that's a heck of a lot of work for the cabs, hope they sound as cool as they look. Be sure to cover the tweeter faceplate in thick felt as it looks like you're using a worst-case diffraction scenario for the tweeter (the other drivers should be okay, especially the woofer) __________________ I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!

26th May 2011, 07:13 PM	#6
badman Custom Title diyAudio Member Join Date: Sep 2003 Location: Sunny Tustin, SoCal	Note how in the B&W Nautilus, the drivers are large relative to their mounting surfaces, as it is with your woofer, where there's a minimum of "Baffle". A circular baffle has the same distance from the diaphragm to the edge at every point on the circumference, so you get one very heavy diffraction mode. There's quite a bit of documentation on the effects of surface mounting vs. flush-mounting dome tweeters, you can consider this as a worse version of surface mounting. By using felt, you absorb the energy that illuminates this edge, so there's a largely reduced amount of energy to excite the diffraction modes. This also helps reduce off-axis energy somewhat in the crossover range to the mid, which is a good thing in this and most cases. __________________ I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!

26th May 2011, 09:38 PM	#8
badman Custom Title diyAudio Member Join Date: Sep 2003 Location: Sunny Tustin, SoCal	wow, very slick, the build is even more impressive than the result __________________ I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!

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26th May 2011, 01:58 PM	#3
korabetsni diyAudio Member Join Date: Mar 2011	hi, yes there are also other people that maked this project. What do you mean worse case scenario for the tweeter?

26th May 2011, 02:05 PM	#4
korabetsni diyAudio Member Join Date: Mar 2011	hi can you be more specific about the thick felt please. What do you suggest to do?

26th May 2011, 05:16 PM	#5
hooligan72 diyAudio Member Join Date: Jun 2010	That's beautiful work. I would love to see some build pictures.

26th May 2011, 10:01 PM	#9
tuxedocivic diyAudio Member Join Date: Jan 2011 Location: Victoria, BC	Unreal!

28th May 2011, 11:53 AM	#10
korabetsni diyAudio Member Join Date: Mar 2011	do you think that i must use damping material? in the midrange cabin maybe? Other 2 people that i know (who made these speakers) did not use any damping material. What is yours opinion?

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