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Multi-Way Conventional loudspeakers with crossovers

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Old 7th March 2008, 08:45 AM   #11
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Quote:
Originally posted by GOWA
If you are speaking of the graph, no.
I removed the EQ, implemented Zalph's notch and there is a difference. (for the better) Still needs some work up top.
Please report your status and post your xover implementation components as is, and results you expect to see again, for clarification, unless you are still testing.

Again phase is important as was mencioned by jnb and it didn't look as it belongs to this xover but to a corrected phase alignment (xover) with inverted polarity on the tweeter, and this doesn't show on picture # 2 of the "2-Way Crossover Network".

Thanks. Good Listenings.
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Old 17th March 2008, 10:44 AM   #12
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Quote:
If you are speaking of the graph, no.
I removed the EQ, implemented Zalph's notch and there is a difference. (for the better) Still needs some work up top.
GOWA,
Any news?... I hope you got it right.
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Old 17th March 2008, 06:41 PM   #13
GOWA is offline GOWA  Canada
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Default L18RNXP

I haven't had much time to work on it lately. I am working on two other projects that I need first.
With the L18, I keep coming back to the idea that a point of 1750Hz or so seems to be the best sounding and I will be revisiting this again soon.
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Old 18th March 2008, 02:01 AM   #14
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GOWA,

From memory, Zaph said in hindsight for his L18/TBFCG design he would lower the xo point from 2KHz. I don't know how the North Creek tweeter will handle it but that I believe was to get as far away as practicable from the L18 breakup and higher order odd HD as possible.

David.
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Old 18th March 2008, 02:16 AM   #15
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Wow-

You design crossovers the way I do. It looks like you are getting your BSC using the George Short philosophy. I like to bring the tweeter level to 6db below the woofer level, so in theory everything will be flat when the speaker is placed well into the room. (I use xover pro as well.)

Now the bad news. I think the sibilence is due to cone breakup, and I never was able to get rid of it with any crossover tricks. The only thing that works reasonably well is to set your crossover point at less than 1/3 of the breakup frequency.

I messed around with my Odin's for months trying to get rid of the metal sound from the speakers. I finally glued lightweight damping material to the backs of the woofer cones. This worked reasonably well, but my very sensitive ears could still hear a bit of cone breakup when listening to certain female vocalists.

I finally started building three ways.

JJ
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Old 18th March 2008, 05:05 AM   #16
GOWA is offline GOWA  Canada
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Default L18RNXP / 1224 + D25S-06

I will be testing again this weekend and I hope with better results.
I am also putting together a set containing the 6-1/2'' Dynavox with the North tweeter.
http://s197.photobucket.com/albums/aa7/linggowa/
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Old 18th March 2008, 11:39 PM   #17
GOWA is offline GOWA  Canada
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Hey JJ,
What type of 3-ways have you been working on? I have one in the mix as well.
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Old 19th March 2008, 02:10 AM   #18
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GOWA-

Tweeter: one Tang Band 25-1372SC (1" ti)
Mid: one Tang Band W3 1335SB (3" ti)
Woofers: four Dayton RS 150-4 in series parallel

The tweeter and woofers I would do differently, but the midrange is very natural sounding -- no sibilence. Not quite as detailed as some metal coned speakers, but that might not be entirely due to the midrange. I can post more info if you are interested.

JJ
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Old 19th March 2008, 02:52 AM   #19
GOWA is offline GOWA  Canada
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That's a lot of work. Nice going.


I am working on a design which has:

TWEETER = Seas - 27TFFNC/G (H1396-04) http://www.seas.no/index.php?option=...186&Itemid=182

MIDRANGE = Vifa - PL11MH09 (8Ohm) http://www.madisound.com/catalog/ind...ath=45_234_265

WOOFER = Aurum Cantus - AC-200MK2 http://www.aurumcantus.com/aurumcant..._midwoofer.htm
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Old 19th March 2008, 05:14 AM   #20
GOWA is offline GOWA  Canada
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So far I'm here with the 3-way
Attached Images
File Type: jpg ac200-&-vifa-&-seas-3.jpg (48.6 KB, 97 views)
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