Hardware Spotlight -- Audiobahn/Unwired Technology
The monitor was securely bolted to the ceiling of the minivan — far-forward enough for rear-seat passengers to enjoy the video, but not so far as to distract the people in the front seat or obstruct the rearview mirror. Also installed in the ceiling was the hockey puck-sized transmitter for the Unwired wireless headphones. When not in use, the LCD monitor folds up into the ceiling, out of the way of passengers entering and exiting the vehicle.
The picture provided by the Audiobahn monitor was fantastic. The 16:9 aspect ratio of the screen perfectly fit the widescreen movie. The 1,440x234-pixel resolution looked great on the 7-inch monitor. The picture was bright enough for viewing even in the middle of the day, and the viewing angle allowed anyone in the second or third row a great picture. Strangely, the monitor's logo and controls were all upside down, a common quirk with overhead monitors, but the picture was oriented properly.
The headphones were also a hit. With no wires, there's no tangling, stretching or twisting. The sound quality is very good, and since they were connected to a low-level fixed audio output, each headphone had independent volume control via a dial on the side. Because the headphones receive the audio signal through infrared signals, there was none of the noise or static commonly associated with wireless headphones. Each has a single power button for turning the headphones on and off, and a red LED lights up to tell you when they're powered on. The phones power off automatically when there's no incoming signal, thus saving you from wasting AAA batteries.
Flipping the toggle switch in the dash turned on the RF modulator, which routed the DVD player's audio through the radio at station preset 88.1, which in my area is an unused frequency. This is most handy for MP3 playback on the unit (since the factory-installed CD player on the Mazda is not MP3-compatible), or if there are additional people in the third seat who don't have headphones.