Sounds like not enough amp. I have 2ce's with stereo subs and are heavenly on symphonic music. Running old sonatas mono/blk M200. Set up is fussy but once you get it they are quite nice. I have heard many 3a sigs. and always was amazed. They really like good electronics. Good luck
Vandersteen
After hearing many good things about Vandersteen speakers I purchased a pair of 3a signatures. They sound beautiful with chamber music or small group jazz but quickly fall to pieces with symphonic works or rock. Have other people noted this deficiency with Vandersteens?