3000micro係dual opposing 8吋單元, sb1000pro係12吋subwoofer單元, 物理上已經有差別
另外因為3000micro單元細, 佢要用dual opposing黎achieve大d既output, 當然佢份amp個power都大d, 佢literarlly用左sb3000份amp不過將佢塞左落3000 micro度 (correct me if I am wrong)
according to measurement by Brent Butterworth (CEA-2010 standard)
SB1000pro: 20hz 88.8db, 31.5hz 101db, 50hz 110.9db
3000 micro: 20hz 84.6db, 31.5hz 92.3db, 50hz 104.7db
就咁睇rms唔可以反映一切