Look at the side of the speaker without the red interface plate, there will be a red ring around the mesh but no buttons on the side.

Use a Phillips head PH1 screwdriver and remove the one 0.55 cm from the top and one from the bottom of the black face plate, (do not remove plate yet).

Use a metal spudger to remove the mesh speaker cover by wedging the narrow end into the center of the outer edge of the mesh touching the red plate.

Use Phillips head ph1 to remove four 0.55 cm from the red panel (under mesh).

Note: For subwoofer replacement there will be 4 screws to remove and four bolts as well. The bolts are used for alignment and cannot be removed, locate the screws and remove.

The Screws will have 0.7cm in depth

If the screws are difficult to remove, use the tweezers to twist and pick them out.

Separate the red plate from the black face plate by removing the black plate from the tube and pushing on the inside of the subwoofer.

You may place the black faceplate back on the tube, but do not screw it back in yet.

To remove the the wires from the subwoofer terminals, use a soldering iron to reheat the solder at each of the four points of connection.

Use a desoldering pump to remove the liquid solder from the terminals.

Remove the old subwoofer.