Audio Systems: MB Bass Problems, benz 300d, sony xplod

Question
Dear Sir, I have a 1984 M-Benz 300D and I have replaced the head unit to a JVC cd and I am not happy with the bass. There is no bass at all, because if I put the bass up just a bit the Speakers start to pop. I would like to install a box with 2 12' subs but am not sure whether it will work or not since my Mercedes has the fuel cell behind the rear seat and the trunk and there is a metal panel in the trunk to hide the fuel tank. Should I just put one sub in where the first aid kit is located or what would be my other options? Please help Sam

Answer
Sam,

 before i added any subs i would simply upgrade the stock speakers .. if you have a typical 4 or 6 speaker system use 2 or 3way speakers up front and to the middle and a good 4 way to the rear .. you can get a good set of speakers * i recommend sony xplod* but its all on your perosnal taste and budget but most are 30-60 dollars a set and some over 100 a set just depends on what you want .. without adding an amp to power them and just using your JVC head unit i would go with a good mid grade set of speakers to replace all of my factory ones.. which puts you in the 30-60 dollar range .. a good site that has wonderful prices is etronics.com that is where i buy most all of my components.. now if you are unsure of the stock speaker size visit crutchfield.com and use the "what fits my car" option and keep track of what sizes you need so you can shop around for the best price.. hope this helps you out if you need anything else let me know

thanks