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-   -   active crossover help (http://www.diyaudio.com/forums/full-range/63222-active-crossover-help.html)

Andrewbee 26th August 2005 02:35 PM

active crossover help
 
howdy,

This is mostly a fullrange project hence its posting here.

I am going to try a active crossover for a project. Using Visaton B200 full range and then a 15" or two for the bass.
The candidates I have found are

http://lcaudio.com/index.php?page=13

and

http://welbornelabs.com/acm.htm

Anyone have experience with either or suggest another?

I plan to crossover at ~100hz / 12dB

Any advise / suggestions?
This is my first attempt with an active crossover.

Thanks

Andrew

soongsc 26th August 2005 03:11 PM

Design the low pass filter and subtract that low pass from the original source. This will let you use less components.

jackinnj 26th August 2005 03:50 PM

you can get free filter design software from Texas Instruments -- and it works very nicely -- just enter "FilterPro" in their search engine.

in FilterPro you can adjust the "Q" of the cascaded filters -- so it is easy to design Linkwitz-Reilly filters -- probably not a bad idea to look at Linkwitz's website for his insights.

AJinFLA 26th August 2005 05:57 PM

Andrew,

if your XO range is around 100hz, why not use a dedicated subwoofer plate amp? It seems for the prices you are looking at you could get a XO with a amp built in! This guy has some pretty nice ones and you could get one with an LT specific to your setup.
http://www.rythmikaudio.com/nonservo_product.htm
His ServoSubs are some of the most musical subs I have ever heard. For the money they are unbeatable. I bought two! Just a thought.

Cheers,

AJ

Andrewbee 27th August 2005 12:43 AM

Thanks guys,

I suppose a lp filter is easiest and since it was mentioned I do have a KG 5150 sub amp somewhere packed away that I had forgotten about. Time to go look for it.
That gives me some choices and saves some $

Andrew


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