I am looking into boxes for my brahma 15. I came across two. One is a snail shell enclosure and the other is a standard sealed box from sub zero.(thats who Adire recomends I guess) both are about the same price which one will be a better box. I am not familiar with the snail shell enclosure thats why I ask. I will be giving the speaker about 600 watts so I dont know if that makes a difference with this type of enclosure. thanks guys. James