iLounge has discovered that the microphones in the Wi-Fi and 3G models of the iPad 2 have different sonic qualities. As noted in our comprehensive review, the microphone hole of the iPad 2 has been moved from its position beside the headphone port in the original to the middle of the device, over top of the front-facing camera; the shape has also changed from a circle to a pill-shaped hole. These changes mean that the microphone of iPad 2 Wi-Fi models…