when using vandersteen2wq powered sub...

No, you still use both speaker inputs on the back of the speaker and insert the high pass filter in line between the preamp and power amp.

To expand on Bigtee's answer just a bit: you leave the bi-wire speaker cables on the main speakers, as the low-frequency driver will still continue to reproduce frequencies in the upper bass. The crossover for the subwoofer is connected between the preamp and power amp, and its function is to roll off the response to the main speakers below 80Hz. The built-in amplifier in the 2Wq sub has a compensating frequency curve, so it picks up the frequencies below 80Hz. The 2Wq is a true subwoofer, handling the bottom two octaves (20-40Hz, and 40-80Hz), while the main speakers reproduce the frequencies above 80Hz.

thanks....im going to use one with my 2ce sig...because i use tube pre and power and don't want to give up the tubes anywhere because they do such a super job on the mid and highs...espeically listening to cont. jazz. the ss. amp in the sub is then doing what it needs to do with those low octaves......it's subtle but i believe correct in getting the presence of bottom end..even though the pounding of certain freq. aren't there because i believe it is used all the time in speakers where the freq.are boosted too much to allow a lower end that sounds good but isn't correct...especially in stand up bass...thanks gang...if anyone has futher details concerning this sub..please let me know...i am using a cary audio cd..cary pre and power into the vandy 2ce sig..and i am very pleased...the sub is subtle and i believe that is correct...please feel free to respond...thanks...dwhitt