Help positioning Sub

I would like some comments on the positioning of a sub.
I have a PSW450 unit.
We are planning on changing the layout of over "entertainment center". I am looking at a 50 inch LCD HDTV unit (Hitachi) and am a little cramped for space.
I am envisioning making a TV stand that can house the components (receiver, dvd etc) and the sub.
Will the sub in this close proximity of the other component create reliability issues?
Could I see visual artifacts on the screen due to the sub?
Is it a bad idea to "enclose" the sub?
how much free space should I have around the sub?

Another option is placing the sub near the right rear surrond speaker. Is this a bad idea?

Any help/comments/pointers will be appreciated

If this isn't clear, I could post a picture.
Post edited by Flynnstone on

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