MWilliams,
Al has a great point. Another concern might be tweeter compression (this is certainly a problem with the WP 8, as evidenced by Soundstage Measurements - I have no idea how the Sophia perfroms in this respect). Yet another possibiliity is "JITTER" - this can kill the proper sound of cymbals - making them sound dead and closed in - in stead of open.
Finally, have you considered that he prototypical B&W speaker has a boost around 4 KHz (or a hole between 1 KHz and 3 KHz if you like)- it is possible that all your reflection treatments were helping to tame this. Now that you have the Sophia's coudl you be deadening the room too much?
Al has a great point. Another concern might be tweeter compression (this is certainly a problem with the WP 8, as evidenced by Soundstage Measurements - I have no idea how the Sophia perfroms in this respect). Yet another possibiliity is "JITTER" - this can kill the proper sound of cymbals - making them sound dead and closed in - in stead of open.
Finally, have you considered that he prototypical B&W speaker has a boost around 4 KHz (or a hole between 1 KHz and 3 KHz if you like)- it is possible that all your reflection treatments were helping to tame this. Now that you have the Sophia's coudl you be deadening the room too much?