A few people have asked for some more details regarding my voice setup.
I bought a set of LXT600VP3 Midland Walkie Talkies open box from Amazon, they were around $30. Midland makes a bunch of these at various price ranges, I went with the LXT600VP3 because it has a low power mode for short ranges (like 2 inches in my case), and it comes with rechargeable batteries. These are velcro'ed into my chest plate, with the speaker facing my body. With the ab plate on, it lifts the torso up high enough to prevent the walkie's speaker from being muffled by my chest. My ATA bucket is really cramped, but you could potentially shove the broadcasting walkie in there if you wanted the audio coming from your helmet.
One of the walkies is plugged into a Midland Throat Mic, this is your broadcaster, keep the volume turned down/off. You could use a traditional mic, but a throat mic won't have any problems with feedback, or fan noise, and you're free to take your bucket on and off without wires getting in the way. The second walkie is your receiver, crank up the volume, and make sure both are set to the right channel. You can turn on VOX mode on the broadcasting walkie, or use push to talk (PTT) button that is built into the throat mic. The cord is a bit short but can reach your belt or anywhere on your torso or ab plate. PTT sounds a little better, as VOX can clip your first syllable, but being hands free is pretty damn convenient (just remember to switch off your walkie before complaining about the child you almost tripped over).
My neck seal actually makes the mic sound better as it holds closer to my larynx, it's no more uncomfortable than normal.