Surround sound experts needed

I have a question that's been eating away at my brain.

I have an older surround receiver that I love (Kenwood KR-V126R). I don't watch movies through it often, but sometimes I do. It's an older surround receiver, no pro logic, no center channel. Just plain ol' 3 channel surround (left, right, rear).

Now, it's my understanding that Pro Logic carries surround information through a 2 channel signal. But since my receiver doesn't do any center channel decoding, does it play back the center channel material mixed into the main left and right fronts, or am I missing out center channel dialogue all together?

I suppose this isn't very important to me, since I usually adjust the TV volume to match the mains and use it as my center channel. But this question has been on my mind for a few months now and I guess I'm just seeking "closure".

Thanks
Aaron

I had a feeling that's how it worked, but wasn't sure. Will have to do the "tv sound off" bit and see how she sounds.

Thanks for the reply Squirrel. I appreciate it. I'll start doing my backup encodes with 2 channel pro logic sound from now on. I don't see a 5.1 receiver in my future. I love this receiver, it sounds great IMO, and can't afford a new one right now anyways.