If you have been screwing different types of car amplifiers onto the back of the subwoofer box, chances are you have hundreds of air leaks on the back of the box. If you bump your system loud and open the trunk, chances are you hear a chuffing noise like air is rushing out, similar to port noise when the lows hit. Old screw holes can cause lots of leaks and loss in spl, making lower notes sound like farts. The best way to seal old screw holes on a sub box is using wood glue or silicone sealant as a solution to filling them in.
1) Remove the subwoofer from the enclosure.
2) Look inside it with a flashlight. Look for any screw holes that have actually come inside the box.
3) Place glue or silicone sealant onto the old screw holes directly. Using a flat head screwdriver to work it in the holes until the area is fully covered.
4) Allow up to 24 hours to dry. If you do, the glue can move around in the box if you move it and pick it up and also the subwoofer surround can get frozen from the glue adore.
Whether your subwoofer enclosure is sealed or ported, sealing up old screw holes is very important if you are looking for the best sound quality. It really makes deep bass sound like poop if they are not sealed up. You will notice a day and night difference if you fill up the speaker box screw holes that are no longer in use.
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