I have a ported box for a single 15" sub. I used it with my xxx. I no longer have any need for this box. The dimensions are 37 x 16.5 tall x 20 deep. It is about 4 cubes and tuned to 32hz. It has some damage to the port area thanks to DHL. I am taking offers for this and I"ll let it go cheap. It's just taking up room. Let me know if you want it.
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http://img217.echo.cx/my.php?image=picture0044ga.jpg
http://img217.echo.cx/my.php?image=picture0034zl.jpg
http://img217.echo.cx/my.php?image=picture0057pk1.jpg
http://img217.echo.cx/my.php?image=picture0063fu.jpg