are your tinsel leads sewn in to your spiders ? or are they just floating inbetween the cone and the terminal posts ?
my old style re sx does NOT have sewn tinsles and they put that little round felt pad on the underside of my cone to help control the sound of tinsel slap during good excursion... to solve this issue I had - I used a box on the smaller side to help the air spring of the box psyicly not be that capable of producing max excursion at and above tuning. using a smaller box also alows slightly higher power capabilitys usualy...