http://www.stormcam.org/kenwood-microphone/

How can i connect a microphone to a stereo system that does not have a Mic input on it?
I would like to know this because I’m going to be doing some things soon that i need the use of a mic. I’m also going to be using a kenwood stereo to power the speakers for the sound system.
You can connect a mic to a home stereo. You will need to buy a cheap mic mixer first:
http://www.zzounds.com/item–BEHXENTX502
The tape outputs on the mixer will connect to an unused input on the stereo receiver.
Be careful though, home stereo equipment is not designed to be used as a PA or DJ system. You really should consider investing in some real DJ equipment. You can easily damage your speakers if you push the volume up too much.
AudioBahn 12″ Subwoofer Super Excursion