Re: sub is buzzing, please help
If the grill is the problem, I'd vote to eliminate the grill...or swap it for a metal one with a rubber gasket.
Another possibility is to add rubber feet to separate the sub from the grill as you suggested.
Good luck, hope I helped.
Team Starr Mountain Nuthugger #4
Bought From: outsideshot23, bigguy2010, SAZCLASSD, centergod79, SPLaudio, JCRF71, Vertex Audio, assassin1840, woofercooker, double 07
Sold To: ChucklezZ, Davecub14
1998 Pontiac Grand Prix GTP Sedan: (2) C&D 102AH Trunk Batteries, Needs Big 3
Sub stage: Custom SPLaudio 12" DC Lvl 5 m1 motor Dual 2-Ohm
Box: 1.75ft^3 ported @ 31hz
Sub Amp: Cadence ZRS C5 (5,100w RMS 1-Ohm @ 14.4v)