%1$s a écrit i dont really have specifics yet, but yeah i would only use the outs of the mixer if all instruments are miced..i prolly will use 1 or 2 ambient mics for instruments that may not me miced (or DI'd) and to capturew the audience...i only have one condensor mic though...do you think a couple of dynamic mics would work ok? im prolly try and combine the two...anyway thanks for all your help...!
Dynamic mics are not the best for recording room/venue ambience; condensors are more sensitive to this task. However, you could use your single mono mic set in bidirectional mode Check out the following article's sections on bi-directional mics and the section "IV-Typical placement". Also make sure that the feed you get off of the board is a balanced mix if bounced down to stereo. If it's individual subgroups or individual channels going to your multitrack via a direct output from the mixer's individual channels than just make sure you have good levels to work with later. The placement of your room mic will be crucial to what kind of room ambience you desire in your live FOH or House mic tracks whether multiple or single. If you feel limited by your mic choices and are not sure whether your dynamic mics are up to snuff, place them at a wide stereo width in the house, but close to the stage above the audience if possible, with your mono condensor in the middle, preferably set to bi-directional and oriented at 180 degrees to the stage to capture left and right in a mono sum.
Of course your multitrack is going to be a limiting factor here (will you have enough channels for the board feed plus the mics you set in the house?). Another option is Mid-Side recording where you pair a Condensor with a dynamic, but preferable a bi-directional condensor and a cardioid condensor arranged in the following configuration, however, you will need an MS Decoder. Check out the following mic guide from Groove Tubes:
https://www.google.com/url?sa=U&start=1&q=http://www.midiman.de/files/pdf/Record_Now_Mic.pdf&e=10384
