The guys at tweeter are pretty cooperative. Why don't you ask them if you can swap your Krells into their setup?
Did you listen to your own CDs or new material?
It is not uncommon to hear differences in imaging characteristics among different speakers of the same line using the same electronics. Smaller speakers with fewer drivers can have better overall coherence and soundstaging but generally at the expense of bass extension.
How much attention have you paid to speaker placement? Are your speakers up against the back wall or out in the room? How far apart are they? This would be the first experiment I would perform.
Did you listen to your own CDs or new material?
It is not uncommon to hear differences in imaging characteristics among different speakers of the same line using the same electronics. Smaller speakers with fewer drivers can have better overall coherence and soundstaging but generally at the expense of bass extension.
How much attention have you paid to speaker placement? Are your speakers up against the back wall or out in the room? How far apart are they? This would be the first experiment I would perform.