I have a speaker box. It says on it: 'Kroth Quality Canadian Craftsmanship'. The cabinet has grey carpet with steal edging. It contains a 15" Cetec-Gauss loud speaker model #: 4583a 8 ohm. I need to know how many watts the speaker is and what is its value. I would also like to know where I may purchase another similar speaker. Any help I can get would be great. Thanks.