Help with active crossover

sunil · 7th March 2004, 03:34 PM

Hi,

If I need to put an L/R active XO with baffle diffraction compensation (bdc) & a linkwitz transform (lt). What would be the order to wire it up. I understand the LT requires a low source impedance so should I place that just after the input buffer, or should it be the BDC first, followed by the LT & then the main filter.

Thanx,
sunil

5th element · 7th March 2004, 07:40 PM

I have not used the linkwitz transform, but from what I know all active filters need a low source impedance to maintain the filter shape as frequency increases or something like that.

I have in my actives the filters, followed by level adjustment.

Then in another one filters, notch filter, BDC, all work well.

sunil · 8th March 2004, 07:37 AM

So, can I put the input buffer followed by the linkwitz transform, the BDC & then the filters.
Will putting the linkwitz ahead of the others affect the setup in any way ?

cheers,
sunil

5th element · 8th March 2004, 10:44 AM

Only if the transform outputs a high source imp!

7th March 2004, 03:34 PM	#1
sunil diyAudio Member Join Date: May 2003 Location: Bangalore, INDIA	Help with active crossover Hi, If I need to put an L/R active XO with baffle diffraction compensation (bdc) & a linkwitz transform (lt). What would be the order to wire it up. I understand the LT requires a low source impedance so should I place that just after the input buffer, or should it be the BDC first, followed by the LT & then the main filter. Thanx, sunil

7th March 2004, 07:40 PM	#2
5th element diyAudio Member Join Date: Oct 2002 Location: England	I have not used the linkwitz transform, but from what I know all active filters need a low source impedance to maintain the filter shape as frequency increases or something like that. I have in my actives the filters, followed by level adjustment. Then in another one filters, notch filter, BDC, all work well. __________________ What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz! Droggon Attack!

8th March 2004, 10:44 AM	#4
5th element diyAudio Member Join Date: Oct 2002 Location: England	Only if the transform outputs a high source imp! __________________ What the hell are you screamin' for? Every five minutes there's a bomb or somethin'! I'm leavin! bzzzz! Droggon Attack!

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8th March 2004, 07:37 AM	#3
sunil diyAudio Member Join Date: May 2003 Location: Bangalore, INDIA	So, can I put the input buffer followed by the linkwitz transform, the BDC & then the filters. Will putting the linkwitz ahead of the others affect the setup in any way ? cheers, sunil

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