I need an amp but don't know what kind I need I got a subwoofer Dual XOBP12D http://www.dualav.com/carsubs/xobp12d.html < Link # Specifications: Max power handling: 1100 watts # RMS power handling: 600 watts # Sensitivity: 89dB # Frequency Response: 25-200Hz # Impedance: 4 Ohms # Height: 14.4" # Width: 30" # Depth: 14.4" # Features: Low-Q optimized drivers # Carpeted enclosure # Plexi subwoofer viewing windows # Built-in crossovers # Mirrored and diamond plated chambers # Dual chamber design # 12v DC blue glow illumination # Easy add-on to existing systems 2 rear speakers RoadMaster RS630 - 6 1/2" Three Way Speakers 200 Watts Peak Power 40 RMS Watts Power 4 Ohm 2 Front Speakers Lightning Audio Speakers : B3.40.2 http://www.lightningaudio.com/produ...id=5&family_id=11&item_id=100553&locale=en_US < Link 90 Watts Peak Power 30 Watts RMS Can you help me thanks