Hey guys. So I just bought this GK cab from a friend. It's an 80's (I think?) 4x10, the one thats covered in carpet with the pink and blue logo. I just have one major question: how much power can I put through it? I've seen in some threads that it can take 200 watts, but in another they were talking about using 400. Haven't found a real, solid answer yet. Any feedback would be greatly appreciated. Thanks.