sa pier, look for those large 3 ways from Pioneer /Technics/kenwood with 12 inch woofer.. if you ever find an HPM series from Pioneer bilin mo na. Ok yun, or a LS-1600 from Kenwood, I have the LS-1600 by Kenwood Kick A$$ speaker very efficient, i tried it sa covered roof na basketball court with a 20 watt amp, mararamdaman mo ang bass !!!