I built a suboofer before out of wood for the basket, foamboard for the cone, rubber bands for the spyder, 2x2x2 inch N42 Neodymuim magnet, and an imitation leather for the surround. Now I have tried a lot of different types of glues and they all can handle around 50 Watts Rms but when I try 150 Rms the glue always fails. I really enjoy making subwoofers but I am getting nowhere because I can not find High temperature voice coil glue, so if you could show me the way to finding this type of glue that would be appreciated. Also if you have any bright ideas for my homemade subwoofer that would be great.