Ceiling Mount for Conference Table

This is a very common request but almost always results in a poor experience. First, 10' is way too far for this microphone and 5' is pushing it. Also, you want to avoid multiple microphones that cover the same area as this results in comb filtering which will make the audio sound even more distant and hollow. You need a balance between room acoustics and the microphone placement and selection. Because the distance between the source (person speaking) and the mic is so far in a ceiling application room acoustics are critical (try for an RT60 time of .5s or less). Speaking of critical... the critical distance will help you determine the useful distance of a mic. Personally, I would recommend you either use microphones which can hang down from the ceiling or you use directional microphones each focused at a specific area and avoid overlap. Check out the 3:1 rule for microphones for additional info. AT makes great mics but I'd have to recommend the Audix M40 for a ceiling-mounted application. You'll need an audio DSP with AEC and adaptive auto-mixing as well. If the performance of the room is important then I would recommend contracting an AV systems integrator or AV/acoustics consultant handle the planning.