An example playback device includes a housing having a front side, a back side, a first end, and a second end. The playback device also includes an IR receiver positioned on the front side of the housing, a first IR emitter positioned on the back side of the housing and oriented such that a first IR signal emitted from the first IR emitter is directed toward the second end of the housing, and a second IR emitter positioned on the back side of the housing and oriented such that a second IR signal emitted from the second IR emitter a) is directed toward the first end of the housing and b) crosses the first IR signal emitted from the first IR emitter. The first and second IR emitters are communicatively coupled to the IR receiver within the housing and configured to retransmit an IR control signal received by the IR receiver.