Congratulations on meeting Messrs Fletcher & Munson for the first time. It's not your woofer, it's your ears (Mine, too. His, too. Hers, too.)! Check this link for further explanation: http://www.webervst.com/fm.htm
Velodyne ULD-15 II sub performance
The ULD -15 sub only allows adjustment of the "subwoofer level" volume control. When listening to music at low volumes, the sub is invisible unless I turn the sub's amp to 80%. Is this typical of this sub woofer? I thought it is a 400 watt amp? Shouldn't it put out more sound and lower volume controls?