In the late 70's & 80's Ludwig went thru a phase where they put more lugs on the "power toms". My kits are from '79. Both of my 14's have ten lugs, as do my 15's. My 12's & 13's have 8 lugs. There is no resonance problem with any of them, extra lugs and all. In fact, a local drummer just pieced together a 6-ply kit because he liked the sound of mine so much....
Here you can see one of my 13's with the 8 lugs....
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