Information About This Item. Soundstream SPLX-152HX (SPLX-152 HX). 15" Dual 2 ohm SPLX Series Subwoofer. Soundstream SPLX Subs 15" running 2000 watts RMS. You can examine Soundstream SPLX-12 Manuals and User Guides in PDF. Database contains 1 Soundstream SPLX-12 Manuals (available for free online viewing or downloading in PDF): Owner's manual . Soundstream, Montebello, CA. 200K likes. Welcome to the official Soundstream Technologies facebook page. For more info about Soundstream, visit