Dancer,
The fact that when you changed your subs location and it helped, you may want to try this for sub location. This is how I placed my subs.
Pick some music with lots of bass or the Yellow album you were talking about. Set your systems volume at the level you like to listen at. Turn your system off and put your sub where you normally sit. Disconnect your main speakers and turn your system back on. Get on your hands and knees, crawl around the room until you find the location where the bass sounds the best to you. Put your sub in that location and reconnect your main speaker, then listen. You still may have to make adjustments but the bass should be more uniformed.
You do need an SPL meter to get the volume correct at all speakers to start as Kal said.
I myself do not like subsonic bass when I listen to 2 channel music so I have a crossover to deal with the differences in bass between 2 channel and movie surround sound.
Enjoy
The fact that when you changed your subs location and it helped, you may want to try this for sub location. This is how I placed my subs.
Pick some music with lots of bass or the Yellow album you were talking about. Set your systems volume at the level you like to listen at. Turn your system off and put your sub where you normally sit. Disconnect your main speakers and turn your system back on. Get on your hands and knees, crawl around the room until you find the location where the bass sounds the best to you. Put your sub in that location and reconnect your main speaker, then listen. You still may have to make adjustments but the bass should be more uniformed.
You do need an SPL meter to get the volume correct at all speakers to start as Kal said.
I myself do not like subsonic bass when I listen to 2 channel music so I have a crossover to deal with the differences in bass between 2 channel and movie surround sound.
Enjoy