Linn Majik 109 work great close to rear wall.
Stereophile Review:
http://www.stereophile.com/content/linn-majik-109-loudspeaker
According to the reviewer:
"Another unusual aspect of the 109 is that the 2K array is mounted on a dedicated cast-alloy chassis directly in front of the front-firing reflex port. The impetus for this design came from Linn Japan, which was pressing for a bookshelf model diminutive enough to easily fit into a small Tokyo apartment. As a result, Linn chose a front-firing port to enable the speakers to function properly when placed flush against a wall. In fact, in addition to dedicated stands (available in black or silver), these speakers are available with optional Linn Brakits for wall mounting."
Stereophile Review:
http://www.stereophile.com/content/linn-majik-109-loudspeaker
According to the reviewer:
"Another unusual aspect of the 109 is that the 2K array is mounted on a dedicated cast-alloy chassis directly in front of the front-firing reflex port. The impetus for this design came from Linn Japan, which was pressing for a bookshelf model diminutive enough to easily fit into a small Tokyo apartment. As a result, Linn chose a front-firing port to enable the speakers to function properly when placed flush against a wall. In fact, in addition to dedicated stands (available in black or silver), these speakers are available with optional Linn Brakits for wall mounting."