Videomaker – Learn video production and editing, camera reviews › Forums › Technique › Sound › 3 lav mics into a usb mixer? › Does your mixer support
Does your mixer support individual tracks – many cheaper USB mixers simply have a stereo output? So you can have two separate tracks, by panning two mics one left and one right, but not three. To do three needs a more sophisticated interface.
Most important – what are you recording? As has been said, omnis close in are ok for a speech recording. Shotguns are great for some things, but need careful aiming, and of course are only directional at higher frequencies, so might work for your speech, but is that what you are recording, or is it music? After hours in a restaurant doesn’t sound very speech typical to me?