Friday, September 21, 2007

Information from the person himself!

Perhaps the best method to find out the crossover frequency and slope is to talk to the designer himself! I sent an email to Mr. Skannings and here is his response

"Yes, you can easily cross the drivers at 3000 Hz - no problem.The 96 dB/Oct filter is really a tough filter. We are used to 6, 12 or 18dB/Oct filters, and have never heard of anyone using 96 dB/Oct filtersbefore. When you use filters with a such high order, there will come absolutely no information from the drivers as soon as they pass the x-overfrequency. It might be, that you need some kind of energy from either tweeter or midrange when using the high order filter and we agree that it might be an idea to move to a less order type. Rising the x-over frequencyto 3000 Hz might also help, as it will give your tweeter better working conditions."

Following his advice and the advice on the diyaudio forum, I tried these settings as a starting point

Tweeter: 3000Hz up
Mid: 200 - 3000Hz
Woofer: 200Hz and below

The results is a much more dynamic mid to midbass. The human voice has got more muscle and more emotions. The high is just as crystal clear. The next thing I will try is to crossover to the W210 sub, probably at 60Hz.

2 Comments:

Blogger Kenneth Fan said...

very impressive indeed

can you post an overview/ chart of your whole system? Do you use 6 poweramps (OTL?) to drive the speakers?

9:22 AM  
Blogger ackcheng said...

Dear Kenneth,

At the moment, I am using 8 digital amp to drive the speaker. Eventually, i will build 6 OTL channels!

8:51 PM  

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