They should be more expensive, they have 4 drivers all firing in-phase. Bookshelves are usually 2-way and are considered direct radiating. Surrounds are intended to envelope you in sound, bookshelves can't do that, unless you line your walls with multiple speakers like in the movie theater...

Try lifting a Qs8 and you'll say dang these things are heavy.

Not sure why you would compare a quadpolar design to a bookshelf?

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