Your #1 Source for Audio, Video and Speaker Building Components. ACT-PRO15 Amp 500 Watt Bi-Amp Plate Amplifier for 15 2-Way Active System HP-11. With the ability to provide 500W of power, the B-52 ACT-PRO15 ultra-efficient Class G amplifier is the ultimate centerpiece for any PA speaker build. The bi-amp design features discrete output stages for […]... Read More