I have a 5 pc. Rock band consisting of guitar, bass, keys, congas, drums, and 5 vocals. Question:
I have a Yamaha EMX5000-12 mixer and use channels 1-5 for vocals (1-4 are dynamic mics and 5 is a new headset hard line condensor mic), 6 for guitar (1 condensor mic), 7 congas (dynamic), 8 for kick (dynamic), 9 for snare (dynamic), 9-10 are stereo keys into direct 1/4s , 11 and 12 are open 1/4s for other apps all sent to the board through a 25 ft. snake. Oh ya my bass signal is back line only and non PA supported.
There is a +48V single switch to engage phantom power for cahnnels 1-8 simultaniously. If I engage it and use both types of mics (dynamic and condensor) at the same time will it cause damage? I cannot get a clear answer from any manual or forum, and a flick of 1 little switch for 8 inputs seems a little risky if there is a possible voltage spike or if some cables are not correctly wired for phantom power sends. BTW, None of my condensor mics are ribbon type.

HELP!
Would it be better to leave the +48V switch off, get an external direct box type phantom power supply to heat up my headset and guitar send?
Thanks for any input.
Mylo