One known issue with this product is that the grille cloth has become discolored. Despite this, it still offers great bass performance and is a reliable choice for audio enthusiasts.

Using this subwoofer is easy. First, find a suitable spot in your room. It should be on a flat and stable surface. Connect it to your audio system following the provided cables. Make sure the connections are secure. When using it, don't place it too close to walls or other objects as it might affect the sound quality. As for maintenance, keep it clean by gently dusting it regularly. Avoid getting the grille cloth wet. If you notice any other issues, it's best to contact a professional for help.