inputs.text: good power several downfalls - purchased amp brand new two alpine types 12\\ subs wired 2ohm load gain set low avoid overpowering subwoofers alpine typically handles power highest rated rms subs still working fine however setup amp would constantly cutout ran systehem even ten minutes heavy bass amp well ventilated area spacers mounting board output configuration amp 900x1 watts rms sub rated 300350 watts rms far amp supplying mean amp not working strenously purchased alpine m50 puts 250 watts rms subwoofer runs cool seehems push subs harder amp ever amp would get hot end fried opening case area around copper coils black not sure caused amp overheat still love powera acoustiks subwoofers not fond amplifiers amp could run far cooler spend money better amplifierbest buy installer 3 yearspioneer indash dvdgps touch screen headunitrockford fosgate 4ga wiring kitrockford fosgate 20 farad capacitoralpine type 12\\ dual voice coil 2 ohm subssilverado underseat ported boxbose stock amplified 6 speakersirius satellite radiorearview backup cameraxbox 360 mounted passenger seat