I wouldnt run a sub without an amp. Underpowering a sub is also bad for it and can damage your deck also. The sub is trying to pull more sound that the deck can supply. I have 4 sony x-plod's. They are LOUD! They have no bass. They were not meant for that. I can turn up my volume to the max and the speakers sound VERY crisp. Now, I also have a 12" pioneer sub with 800 Watt amp. The sub provides the hard pounding bass. Loud speakers plus 12" or any sub = nice sound. My GF loves to turn up my music so other cars can feel it and so fourth. Me, I listen to it to where I can hear and feel it a lil, not for others to feel. I'm weird like that lol. Here are some pics
JVC MP3 deck (Nothing special, but its nice to have cd's that hold over 200 songs
My sony x-plod with the cover taken off for the pic
Cover on
x-plod's in the back
closer look
12" Pioneer sub with 800W amp. I lower my back seats when I want the bass to pound all over me (vibrate hehe)
I still need to find a location for this amp and also need to bolt this speaker down because it slides when I hit hard speed bumps or turn FAST lol