Polk Audio RTi6 High Performance Bookshelf Loudspeakers (Pair) for $149.99 shipped after coupon code EMCNEHE35. Here is a screenshot for your reference. This is a pair of real wood bookshelf or on-wall speakers with all MDF construction and resonance-free enclosures. each is equipped with a 6.5″ polymer composite cone driver with rubber surrounds and features a neodynium magnet and a heat sink on the back of the magnet. Most places have it for about $249.