Log in or register to post comments Home Audio Systems TinyTim Sat, 10/07/2006 - 14:04 These are the subwoofers used by the Grand, they are synced with the motion sensor for the woofer ribbon panel :-) Select ratingGive Apogee GRAND Subwoofers (same as Krell Master Reference) 1/5Give Apogee GRAND Subwoofers (same as Krell Master Reference) 2/5Give Apogee GRAND Subwoofers (same as Krell Master Reference) 3/5Give Apogee GRAND Subwoofers (same as Krell Master Reference) 4/5Give Apogee GRAND Subwoofers (same as Krell Master Reference) 5/5 Average: 3.1 (14 votes)