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[quote author=collin  link=1152735215/0#0 date=1152731615]Hi guys
Just want know is the wo is good for spl , I wondering if the box is capable of doing 155dbs with correct tuning with 2x12s or 2x10s
Or is there other designs I can use for spl

Thanks
collin
[/quote]

for pure SPL, yes there is the simple ported box.  There are SO many more factors in getting loud and 155 is not easily achievable(sp).  Subs, amps, car, org. rules., etc.