View Full Version : Alpine SPR-13S components

09-09-2010, 01:39 PM
I'm going to be running a pair of these comps off an Alpine CDA-9887 head unit and the KTP-445 power pack. I'll be running the head unit active and i'll be bi-amping the woofer and tweeter, so they'll each be getting roughly 45 watts rms. Basically, I'm asking if this will be enough power to sound decent...