Funny thing: when I put my vintage ludwig 13" tom on a snarestand, it suddenly sounds dead!!! and on the rail mount it sounds alive (but the rail system is not stable enough).am I the only one??????
No one's going to win this snare stand/rail debate, just as your audience at a gig will never be able to tell the difference. You're discussing the subtle differences we hear as drummers striking batter heads from behind the set, but this is not what an audience hears. They're hearing predominantly the resonant heads. When tuning, I often have my wife (who has perfect pitch) play the set while I listen 15 feet away. It's a completely different sound out in front of the set as the resonant heads are contributing greatly to the overall sound. (and let's not even get into the acoustical factors of the wood stage or carpeting your sound is bouncing off).
Now if you're in the studio with mics on the batter heads, all bets are off as the sound engineer is going to make your pain-stakingly, fine-tuned drums with brand new heads sound any way he damn well pleases (just venting!)
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