In Search for Marine Speakers

Does anyone of you here know where I can buy some marine speakers? Well, I really need it for my husband’s car. You see, after so many months of not spending a single dollar for his car. I finally gave up to his plea of buying a new set of marine speaker. Unfortunately, I am the type of girl that doesn’t have any idea where to buy such car accessories or any car accessories for that matter. So, if some of you know where I can get one please leave me a message. Thanks!