Bolero:why can't my system reproduce snare well?


For those of you who don't follow my posts religiously, I recently purchased a pair of Martin Logan SL3's. I love them; they especially excel with voices. However, last night, I was listening to Bolero, and the snare sounded terrible. It sounded muffled and faint. I adjusted the settings, and nothing helped. I am using a MC275 and c2300, so I assume the problem is with the speakers. Any suggestions, ideas? Thank you in advance.
elegal
Kiddman; I hope you are using your drum kit for more than testing your system. (From one drummer to another).
Did you read the Stereophile Review linke in my previous post? On page 4, Wes Phillips takes about 1/2 page to describe and lament how difficult it was to get ideal placement for these speakers.

Since they are dipoles, I can see where placement could create a self-cancellation effect and cause certain frequency ranges or overtone patterns to recede or disappear.
All: can you please recommend a good reference LP? I currently do not have a cd player hooked up to my system.