I bought some fairly cheap bookshelf two unit speakers, and they sound fine
as long as they are at least a couple of foot away from a wall as they have
a port in the back of the cabinet. However they are described as bookshelf
design, and of cours as most bookshelves are on walls this somewhat makes
the port at the rear a silly design.
Not only that but they have the keyhole screw head retainers and recessed
terminals so you can hang them on the wall. Do this and they sound like
portable radios.

This is what happens when those in charge of selling stuff has no tech
knowledge of speaker design!
Now if they had made the port in the side or the bottom.... or the front
for that matter!
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please!