http://www.crutchfield.com/S-MEgXYIiU7tV/tech/kb38.html
I'm not familiar with that sub, you might want to look up the model # and check the specs and requirements.
However I am assuming it is probably no more than 150 watts and runs at either 4 or 8 ohms.
You mention having component speakers. Do you have one pair (front) or two pairs (front and back). Regardless of whether they're components or not is whether or not you plan on "amping" them i.e. hooking up each side to an amplifier channel i.e. left front = 1 channel, right front = 1 channel, left back = 1, right back = 1
If that's the case I would look in to a five channel amp. They will usually have something like 50x4 and then a subwoofer channel for small subs.
Or if you are only planning on having one pair of speakers amp + the front sub, you could probably just use a 4 channel, 2 channels powering the components and bridge the other 2 remaining channels and hook your sub up. However if you end up doing that I urge you to get a better understanding of what exactly your sub and amp can do impendance (ohms) wise.
Hope that helps a little.
