Tuning point on the XV15 is in the low 20s. I'm not sure if anyone noticed but we do have the CEA numbers on the site. The XV15 averaged 116.5 (2m) in what CEA calls "low bass"....that is 40-63hz. So it does have "slam" factor. We know everyone is waiting for reviews and we have several lined up. One of the first Power Sound Audio products out the door will be headed to Josh Ricci. I'm confident his CEA output stuff will closely correlate with our own.
Power Sound Audio
“The bitterness of poor quality remains long after the sweetness of low price is forgotten" --- Ben Franklin