Volume is not the issue. I can crank them way beyond where you could sit in the room and listen, although I have to turn the volume up several notches above where it was with the CDM 7s. With the 703s I'm still in the lowest 1/3 of the amp's range.
The issue is more clarity at the low end.
I will try moving the speakers around a bit and I'll put the bungs in the air ducts to see if I can fix the problem. The speakers are in very good condition, no damage to the cases or the cones, and the cables are tightly connected.
Thanks