Can you hear me now?

[_paralyzed_]

for your price range a home audio powered subwoofer is the easiest and simplest solution.

to run a 400watt car amp in a house, you would also need a 400watt+ power supply to get 12v to the amp, you would need a box for the sub as well.

so you could get an amp, a sub, a box, and a power supply, then have to hook it all up, or just buy a powered subwoofer and plug it in.

powered subs will use either an rca input, or you can run your left and right speaker leads into it.

you will need two full range speakers for left and right audio, in addition to the subwoofer