Kubla,
That's a nice set up and is hard to beat even by today's standards. I used to own tube, servo-amped Acoustat IIIs and used an Audio Pro B250 subwoofer to augment the low bass and it worked quite well. I also had the opportunity to audition the Vandersteen sub with the passive crossover you mention -- hooked up to a pair of Magnepan MG-12s and that combination was really quite impressive too. Enjoy!
That's a nice set up and is hard to beat even by today's standards. I used to own tube, servo-amped Acoustat IIIs and used an Audio Pro B250 subwoofer to augment the low bass and it worked quite well. I also had the opportunity to audition the Vandersteen sub with the passive crossover you mention -- hooked up to a pair of Magnepan MG-12s and that combination was really quite impressive too. Enjoy!