So my local stereo shop where i live installed 2 TS-AR15 Subwoofers and Audiopipe APCL-10001D Amplifier. Also he used just a normal enclosure. Now im not familiar with stereos/subwoofers/amps but i feel like these 2 15s are not hitting hard at all. I feel some chest thump and my trunk rattles like crazy, but i was expecting more bass. Can someone explain to me what i can do different to get more bass, or is there actually something wrong with my current setup.