Active filter for B&W matrix 800


Hello everyone,
I own a great pair of B&W matrix 800's and have read and found that the best way to get everything out of them is to take out the passive filter from the bass, and biamp the speakers with active filtering on the bass.
Krell made the KBX especially for this but it is either unfindable or super expensive...
Anyone has experience with making these speakers active with a "normal" and "affordable" active filter, which brand, model would you recommend?
blueskywalker
JPS are probably the only ones around to make what you ant. They may make a custom pair for your situation.
Thx for the reply, could you be a bit more specific please? A google on JPS did not bring me very far ... I live in Europe, are there dealers for JPS products here?
Anyone else who has activated his B&W matrix 800's want to share tips?
Google "AudioFX". It's a store here in town that has a pair on display. I'm sure the owner(Chris)would be glad to offer some tips. Tell him Howard referred you.
The JPS filters are called "Golden Flutes". There was a pair of the Krells for sale about three months ago.
Thx for the tips! You mean FXaudio have a pair of golden flutes for sale in their display? or a pair of speakers like mine?
What price do these filters go?
There was a KBX for sale on ebay some time ago but at 2200 euro without shipping it seems crazy!? no?