Standing vs. Seated-Big Difference in Bass???


I own some Soliloquy 6.3's. The speakers are approx 7 ft apart and sitting area approx 8-9 ft. back. When I stand the bass is perfect. When I sit (same distance)the bass seems to be reduced approx 50-60%. Can someone tell me what is going on? I can do no better than getting 18 inches from back wall, large room 20x22 with semi vaulted ceiling. I have not installed the spikes. Using AR Vs110 (100 watt tube) amp. HELP
Bob
bpaulovich
FOLLOW UP:
I must tell you all that I am unable to move the speakers no more than 18 inches out from the rear wall. Married here and well... you know?
As for seating position and speaker distances from each other I can/will...
Any other suggestions?
I love my Soliloquy 6.3's when I am standing but seated, different story, and I mean a BIG differnet story.
Thanks guys,
Bob
At least move them out to see how well you can make them sound. Then you'll be in a better position to negotiate.

-IMO
i run sol 6.3s from an ARC VT130 in a large room w/ vaulted ceiling also. i've never been able to get clean base until @ least out from front wall 39 inches. my side walls are each more than 15 ft away, speakers 116 in apart & 9 ft from chair back. the sols have been very sensitive to front & sidewalls for me.
jon
I have my 6.5s 72" out from the wall behind them, measured from the center of the front face of the cabinet. This corresponds to 1/3 of the front to back room dimension and gives the smoothest bass response as well as the best stereo imaging and depth. Spacing is 9' apart, measured from centers. Yeah, they're a little in the way, but they sound gooood.