speaker box for psp2000, for psp3000, pc, mp3, mp4,s DVD, TV Voltage:DC12-15V 2A Subwoffer: 15W(RMS) Speaker ... for PSP1. Specification:Voltage:DC12-15V 2ASubwoffer: 15W(RMS)Satellite box ... (RMS)Frequency: Host stereo speaker: 4" 4 omegaSatellite box: 180HZ-18HZSignal to noise ration (SNR,S/N): >70dbSeparating ... psp 2000, psp3000, pc, mp3, mp4, DVD, TV