The Bose line of speakers are designed with a bass unit that creates low and deep sounds, and smaller tweeter and midrange speaker units that produce the higher sounds. The tweeter and midrange are contained in small cube speakers and can be positioned to direct sound where you want it. In some cases the mesh grill covering the cube speakers may be damaged. Speaker grills can be repaired at home.
Detach the mesh grill and supporting frame from the speaker cube. In most cases the grill and frame can be gently pulled off the cube cabinet.
Pull out any staple holding the mesh in place. If held in place by glue, use a solvent to remove the mesh. Do not rip or tear the grill as it will be used as template to cut the new mesh.
Lay a piece of new speaker grill on a cutting board and place the old speaker grill over the new piece. Use a sharp utility knife or scissors to cut the new mesh grill to the same size as the old one. Repeat this for each mesh grill that needs to be replaced.
Trim any loose edges from the new grill cover and place the frame in the centre.
Attach the mesh grill to the frame. Start at the top of the frame. Use epoxy or staples to hold the mesh in place. Repeat for the remaining three sides. Stretch the mesh so it remains even and flat. Carefully fold the corners into place and secure them with epoxy or staples. Trim any excess material from the frame.
Replace the grill on the cube.