Okay thanks. I am only wondering if I have alternative choice to use my old subwoofer so I don't have to use $$ and buy a new one. I thought the preamp out subwoofer jack will give power to the subwoofer..(sorry if I am wrong as I am a newbie). In that case I can use the subwoofer and connect to the receiver
Hopefully we are on the same page that a pre-amp and receiver are not the same.
Yet it really does not matter as your receiver will have line out to your sub as well, meaning that either it expects the sub to have an internal amp, or you have a mono block amp which the receiver can feed into which in turn you can hook up into your sub.