speaker enclosure


Hi,
I would like to build a speaker enclosure about the size of a average coffee table.(approx 7.5 cubic ft) Would it be ok to build it bigger than the recommended size for the speakers I want to use? I would like to get the lowest frequencies possible. I am thinking of using 2 15" speakers. Not sure if I want magnet to magnet, or cone to cone? What would give me more lower frequencies?


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