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Old 10th February 2004, 09:40 PM   #1
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Default Series Crossover

Hi All

Is there anybody out there who is willing to share a design for a series crossover for a Scanspeak 15W8530- k00 Mid/woof + Vifa Xt25 tweet. (1 off each)
i would like to experiment with this concept. Links on above don't really give any "exact" details or values..
Many thanks in advance.
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Old 10th February 2004, 09:51 PM   #2
Ron E is offline Ron E  United States
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If you can find links to Frequency response data, it would be helpful. Someone might simulate it for you, or you could simulate it yourself in speaker workshop.
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Old 11th February 2004, 12:31 AM   #3
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Default Series Crossover with Values

http://www.acoustic-reality.com/ar-sxo.htm

For a start on a series crossover for the Vifa XT25 and SS 8530 series you might start with the Acoustic Reality series crossover. This crossover was developed to work with the XT25. As with all series crossovers the tuning is up to the listener.

Jim
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Old 11th February 2004, 06:53 AM   #4
Andy G is offline Andy G  Australia
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Default This will probably do the job even better....

http://users.tpg.com.au/users/gradds...ss-overs9b.htm

Please let me know how you go so I can add to web site.....
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Old 11th February 2004, 07:01 AM   #5
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Use the Ar-SXO for this configuration. I have a pair of speakers SSD2904/9800 tweet and SS15W8530K00 and I use Ar-SXO without cap, and its the best small monitor I have ever heard.
I also have a pair og XT25 and 15W8530K00 that are laying in my basemente and will make a pair, using ar-sxo with them in a month or so.
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Old 21st September 2005, 09:16 PM   #6
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Hei there.
I came across your old post regarding questions about Vifa XT25 ad SS15w8530k00-
Series Crossover

Well I found a post with a schematic of this combo.
I will try it out myself.

But you have probably coma a long way since your post ;-)

http://www.fsec.ucf.edu/download/Tem..._XT_X-over.JPG

Best Regards
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Old 22nd September 2005, 06:22 AM   #7
j.burtt is offline j.burtt  United States
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What values did you use on the AR-sxo. Did you try it with the cap also ? What were your impressions if you did.
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Old 22nd September 2005, 06:48 AM   #8
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I used L1=0.10 mH, L2=1.5mH and R= (approx 8 ohms) You have to fine adjust this. Nothing more. And it sounded very good.
Here is a pic of the XO prototype.
Click the image to open in full size.

A pic of the speakers;
http://82.134.72.155/hifi/other/DSCF1273.JPG


But beware. We had some problems with the electricity about a year ago. One powercable was torn in a storm and I wasn't at home. I played music at home with my Jeff Rowland power amp and when I came home It smelled burned in my living room.
The result is here:
http://82.134.72.155/hifi/other/DSCF1460.JPG

One powerresistor was completely destroyed.
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Old 22nd September 2005, 09:38 AM   #9
j.burtt is offline j.burtt  United States
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Nice woodwork, did you build the cabinets ? Are they sealed or vented ? What is the box volume, and if vented what size ? what wattage is the big anodized resistor ? Why is there 2 resistors ? Have you done any measurements on them ? Do you know if this is a first order(6db/oct) slope and what frequency it crosses over at ?
I know this is alot of questions, but I am gathering information for my own speaker project. I am considering the Scan Speak 12M/4631G 4.5" midrange(playing 350hz - 3500hz) and the LCY 108,110 or 130 ribbon tweeter built in a monitor, sitting atop a bass module with a pair of Scan Speak 21W/8535-00 8" bass drivers vented playing flat to 30hz. I've read some positive things about the SSD 2904 9800 tweet, and may give it some consideration too.

I am also considering the new Seas Nextel coated paper drivers (W18NX001 and W15LY001) with the same LCY ribbon tweeter, also built in a monitor sitting atop a bass enclosure
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Old 22nd September 2005, 10:54 AM   #10
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Default Re: This will probably do the job even better....

Quote:
Originally posted by Andy Graddon
http://users.tpg.com.au/users/gradds...ss-overs9b.htm

Please let me know how you go so I can add to web site.....
The link is broken Andy

Tony.
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