Sir 2 pairs ng 600W P audio subwoofer.
+1. 2 units c18 650el/channel of the soundstandard ca18.
soundstandard ca18 : 1100 watts at 8ohms and 1700 watts at 4ohms (stereo). just enough headroom for the 650el. itong ang pinagtetest namin ni xstatic sa mga c18 650el at imf hp18 dati pa. hindi naman kami nasisiraan ng amps at speakers but compared sa crown ma3600vz, no match ang ca18 (based lang sa personal experience).
hope this helps.