How to add polyfill into a subwoofer enclosure

What polyfill does if placed in a subwoofer enclosure is trick the subwoofer into thinking its placed in a larger box with more volume. Polyfill can be ideal, if you don't have enough room to build a large box or ideal to lower the hz tuning of your box.

Instructions on how to add poyfill into your subwoofer box:

1)Buy a small bag of good quality polyfill, from any cheap local hardware store.

2)Unscrew your subwoofer driver from your woofer enclosure, using a screwdriver.

3)Remove the sub's speaker wire connections.

4)Place your subwoofer on a clean, flat surface.

5)Remember that polyfill increase the enclosure volume by 0.1 cubic feet. So depending on how larger you
want to make the volume of the box, add the required stuffing amount.

6)Get your sub and connect back the wires you just removed, back onto the terminals.

7)Place the subwoofer back in the baffle.

8)Place screws back in the holes, get a screwdriver and screw them back in.