DIY Long Range Wireless Headphones

I spent a few hours yesterday and today making a pair of long range wireless headphones. I used to do a lot of media production and had a wireless microphone kit laying around. It turns out that all you have to do is plug the transmitter into a standard headphone jack, then plug a normal pair of headphones into the receiver.

In the transmitter and receiver I have, the Sennheiser ew100G2's I was only getting the left headphone out of the receiver. In order to fix this I took a pair of junk headphones and re-wired them to play one channel in both ears. I'm excited about using this solution because the 100G2's heave excellent range. In college my friends and I used them to "put a wire" on someone in our dorm and were able to get transmission through several walls, floors, and across several hundreds' of feet.

I'm not sure how the range is effected, but I picked up a set of four Duracell NiMh 1.2v rechargeable batteries that have worked well so far. The ew100G2's will always show a low battery light because they are supposed to use two 1.5v AA batteries; but they work!