if you're buying online and you want an 8" and amp, these are far superior to anything you've listed, and together are around 140.00 plus shipping, exchange, duty etc...

Di175.1 - Soundstream 175W Monoblock Class D Amplifier

EF-80D - CDT Audio 8" 400 Watt EF Series Cast Alloy Audiophile DVC Subwoofer

 

thanks guys. I have have some more research to do!

 

Ill get you a video of my setup i have right now. If people say an 8 is not loud enough there wrong. I have 2-6 inch pro audio woofers briged on my 4 channel amp running at 5 ohms and it is loud enough. No where near loud like my summer stereo, but it sounds very decent.

 

Thank you. Yeah, I am not into loud bass, all I want is some boom that my current stereo doesnt provide. I dont want my mirrors shaking or anything just that little bass action.