I would like to add that from my lengthy experience...The passive x-2 filters will change the sound of yours highs and mids in a negative way unfortunately. The active unit is the only way to go for transparency sakes...it is expensive but to me the vandy sub is almost worthless with the x-2 unless you have an extremely unrevealing system. If the active is too expensive then I would HIGHLY recommend to have a custom filter built with much better caps i.e. DYNAMICAPS,Auricaps,Cardas caps etc. I had one built with DYNAMICAPS and I can hardly hear the influence of the added connection...It sounds MUCH MORE natural and open against the X-2 and is very close the the performance of the active units at a fraction of the cost. Just trying to help from my experiences..good luck!
For Vandersteen 2Wq users.
How much, if any, does the passive crossover between the amp and preamp change the sound of the mains? I am thinking that it changes it in a way that less bass frequencies are going to the mains; however, how about the mids and his? Do they remain as they were before? If not, how much of a drastic change?