subzero 5,000+ posts CarAudio.com Veteran 6,940 135 Chandler, AZ Feb 7, 2012 #16 I say stuff a ton of polyfill in there and see what happens. It for sure helped my old Kenwood subs when they were in a sealed box. Doesnt compare to what Im running now.. but they were pretty loud for what they cost me at the time. Click to expand... you dont just stuff a ton of poly fill in the box. there is a scale. here it is. Polyfill Chart
I say stuff a ton of polyfill in there and see what happens. It for sure helped my old Kenwood subs when they were in a sealed box. Doesnt compare to what Im running now.. but they were pretty loud for what they cost me at the time. Click to expand... you dont just stuff a ton of poly fill in the box. there is a scale. here it is. Polyfill Chart
