Bookshelf speaker on top of other bookshelf speaker?

Help needed with a noob question

Can I put a bookshelf speaker on top of another bookshelf speaker? They are of different makes (Tannoy F1 Mercury Custom and Sony SS-B1000) but they're all magnetically shielded. Any risk of harm to either or both?

Thanks!

Thanks for the quick response! Just love AVS


....errh...ok, you're just pulling my noob legs, right? Or do I seriously have to leave the bottom one unplugged for real? Both are hooked up to a stereo amp.

Thanks!

Sigh....She Who Must Be Obeyed is presently enforcing the agreement extracted from me under duress a few months ago that in consideration of her permitting the purchase of of a receiver and 5:1 speakers including front towers, the stereo amp, bookshelves and associated rat tails will have to be folded up/stacked etc...

Well, hopefully, if I can get everything nicely stacked up, taking up less floor space, no cables sticking out...SWMBO might be persuaded to accept this as sufficient compliance with our agreement...

Actually, I got the amp early this year and hooked 2 pairs of bookshelves to it. A couple of months ago, I finally convinced my wife that we needed to upgrade to a receiver and 5:1 set up to get the real benefit of our blu ray players and 52" LCD. She agreed but on condition that I reduce the clutter, floor space taken up and hide the wires better. She actually wanted us to sell the amp but I persuaded her that I could reduce the clutter. So here's hoping she'll like or at least tolerate the stacked bookshelves...

Do you reckon the sound will be better with just one pair of speakers rather than stacking the bookshelves on top of each other? I'm a noob and just kind of assumed that since my amp has speaker A-B, 4 speakers has to be louder/better than 2?

Thanks everyone for the kind suggestions!