Rich: When I have the speakers set to THX,the x-over is automatically set for 80hz.When I play the test tones on the receiver,it goes to the 62Ref on automatically,no matter where the volume is at the time.62 is about 80db,according to my Rat Shack meter.Later, Huck

M22ti's x2 VP150 x1 QS8 x2 SVS 20-39 PC+ Onkyo TX DS-777 Ideal Lume Standard