Hello... My buddy has two 18' HGS Velodyne subs in his rig. His buddy just ordered two SVS subs with the big Samson amp. When he gets his SVS sub/amp (after breaking them in/How long should the break-in be?), he'll bring them over to my buddies house for the comparison. Here's my buddies system: Meridian 861 B&W N802 Front B&W HTM1 Centre B&W N805 Side/Rear Velodyne HGS-18' subs (2) Velodyne HGS-12' subs (4) Side/Rear Aragon Mono Blocks, across the front three Aragon 8008BB (2) for the side/rear PS...For the max test, Do you guys think that the side/rear spks should be played without their subs? I'll report back after this interesting comparison. Thanks!!