another crossover question - welborne labs (BD-Design)

by Bert , Thursday, May 24, 2007, 08:25 (6191 days ago) @ fu_man

Hi fu_man,

I was wondering what's the opinion on the active Welborne Labs crossover.
(which was developed for the Oris)

Never played with the active Welborne filters because:

Active filters in general need their own power supply adding things and therefore not optimal. If only used for the bass then this is less of a problem but still, the integration is harder (if not impossible) to get on spot.

It is an advantage in systems where the main amp has a hum problem or provides lousy bass to begin with, there you can improve the quality of the bass by using an active filter.

It is also not a real advantage if you have proper amplifiers to play with as any filter (passive, passive line-filter, active, etc.) needs to be tuned (slope, phase, frequency and gain). Just flipping the phase with 180 degrees does not help much if we need 90 degrees..

Basically you'll need to mirror the response and minimise the overlap in the crossover range for optimal results.

Bert

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