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
I've carefully read through this thread and still don't know which performance and recording (other than that it's vinyl) of Bolero the OP is listening to. I have a few recordings of Bolero and might be able to do a comparison if I have the one in question (but so far unmentioned).
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Davide256: I have a sota sapphire, with a Grado Reference Series, Sonota cartridge
While I look up the recording of Bolero to which I was listening, can you recommend a good IC cable. I am currently using balanced/xlr, but am not wedded to that choice.
I looked at the album: it is CBS masterworks. Leonard Bernstein conducting French National Orchestra. Catalogue number MX35860. That is all the info I can glean from the cover.