Milestones Speaker project

marche · 14th August 2005, 10:11 PM

As I'm impressed by the Avalon Opus Ceramique speakers, I took the challenge to make look-a-like speakers. It is not my intention to replicate the Avalon speakers, I respect the intellectual property of the original designers.

The status of the speakers is that they have been built (with great help of Gydotron and Luc), and are playing music. I'm currently iterating on the crossover filter design (which is a huge challenge

).

I've created some documentation which describes their status so-far (for my own reference), which I think might be useful for others as well, so I've posted it on my homepage:

Milestones pdf files
Looking forward to your feedback, suggestions and ideas!

Marc

PS: This forum also had some previous discussions about Avalon look-a-likes:
Info about Avalon clone project

Other related web pages:
http://www.htguide.com/forum/showthr...?t=3347&page=1
http://www.gydotron.com/Gydolon/gydolon.htm
http://www.gydotron.com/gydolon_mkii%20inleiding.htm
http://home.hetnet.nl/~geenius/Soup.html

Some pictures of the current result:

marche · 14th August 2005, 10:18 PM

Close-up picture.

marche · 14th August 2005, 10:19 PM

Last picture of the result in our living room.

inertial · 17th August 2005, 04:55 PM

(sorry for my english)
Hi Marche,
Very interesting work. I have read the documentation and your passion for speakers is evidence.
I found much interesting on the other forum some particulars about
Avalon , Charles Hansen and JonMarsh.
I like your list of CDs too!
I hope your next steps with x-overs will get you full satisfaction but,
(if I can) I think 90% of result is..... x-over and room treatment so,.........good luck!!

Cheers

marche · 29th March 2006, 03:18 PM

Major update of site, with new filters and unit measurements:

http://www.hifivoice.com/audio/milestones/index.html

Have fun,
Marc

morbo · 29th March 2006, 04:49 PM

gorgeous! Very nice work, you have far more patience and skill than I, one day I hope to do a project of this quality.

schmalex · 30th March 2006, 05:12 PM

If possible, the design and documentation of the project is even more impressive than the speakers themselves. That says a lot, considering the quality of your speaker design and construction.

I also think the list of CDs is really interesting and useful. I'm going to go CD shopping.

marche · 31st March 2006, 05:06 AM

Personally, I hope the Milestones speakers are more "impressive"

I'm happy to see that my list inspires people. But be carefull with the expectations around my list of CDs. Most of it is "just music", and if you're looking for "audiophile" recordings, there might be better alternatives. I chose the music because of its variety, and because non-hifi records should also satisfy on the speakers. For that part, I would strongly suggest to select your own music as well!

Marc

David Gatti · 1st April 2006, 06:55 AM

Beautiful work Marche. A credit to your dedication & talent.
Care to discuss how they sound?
Are they everything you imagined or expected relative to the real thing?
Do you hear any areas where they could be better? There's always something isn't there?

marche · 2nd April 2006, 07:22 AM

Quote:

Originally posted by David Gatti
Beautiful work Marche. A credit to your dedication & talent.
Care to discuss how they sound?
Are they everything you imagined or expected relative to the real thing?
Do you hear any areas where they could be better? There's always something isn't there?

Hi David,

Some of my impressions have been described at:
http://homepage.mac.com/marc.heijlig...1/2006-q1.html

"The sound characteristics of the filter are good. It has a homogenous, integrated sound. It is the first filter that shows energy in the fundamental range (100-300Hz). There is plenty of bass and mid, giving a lot of energy to every note, but never becoming overly warm. Treble is smooth, and brilliant. The spatial image is impressively deep and wide.

The filter misses some texture, or what others would call an "airy sound". It could also be a bit more exciting, have more "micro dynamics", a bit more dramatic and/or romantic. The bass is also a bit "oinky", which can be explained by the Q of the filter. This also hints at fixes required for the tweeter circuit. "

and:
http://homepage.mac.com/marc.heijlig...lectrical.html

"adding a bit of voicing and provide a bit more spatial imaging"

There are quite some plans to investigate what potentials are still out there:
http://homepage.mac.com/marc.heijlig...proposals.html

So, to be continued!

Marc

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17th August 2005, 04:55 PM	#4
inertial diyAudio Member Join Date: Aug 2004 Location: Italy	(sorry for my english) Hi Marche, Very interesting work. I have read the documentation and your passion for speakers is evidence. I found much interesting on the other forum some particulars about Avalon , Charles Hansen and JonMarsh. I like your list of CDs too! I hope your next steps with x-overs will get you full satisfaction but, (if I can) I think 90% of result is..... x-over and room treatment so,.........good luck!! Cheers

29th March 2006, 03:18 PM	#5
marche diyAudio Member Join Date: Jul 2001 Location: Geldrop	Major update of site, with new filters and unit measurements: http://www.hifivoice.com/audio/milestones/index.html Have fun, Marc

29th March 2006, 04:49 PM	#6
morbo diyAudio Member Join Date: Sep 2004 Location: Guelph, Ontario	gorgeous! Very nice work, you have far more patience and skill than I, one day I hope to do a project of this quality.

30th March 2006, 05:12 PM	#7
schmalex diyAudio Member Join Date: May 2005 Location: Seattle, WA, USa	If possible, the design and documentation of the project is even more impressive than the speakers themselves. That says a lot, considering the quality of your speaker design and construction. I also think the list of CDs is really interesting and useful. I'm going to go CD shopping.

31st March 2006, 05:06 AM	#8
marche diyAudio Member Join Date: Jul 2001 Location: Geldrop	Personally, I hope the Milestones speakers are more "impressive" I'm happy to see that my list inspires people. But be carefull with the expectations around my list of CDs. Most of it is "just music", and if you're looking for "audiophile" recordings, there might be better alternatives. I chose the music because of its variety, and because non-hifi records should also satisfy on the speakers. For that part, I would strongly suggest to select your own music as well! Marc

1st April 2006, 06:55 AM	#9
David Gatti diyAudio Member Join Date: Mar 2004 Location: Melbourne, Australia	Beautiful work Marche. A credit to your dedication & talent. Care to discuss how they sound? Are they everything you imagined or expected relative to the real thing? Do you hear any areas where they could be better? There's always something isn't there?

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