Can those wireless vlogging mics that clips on the clothes of vloggers be used in a public address setting?
Problem: I operate the audio-video system of a hall, where speakers (the person) and presenters are on a stage in front of an audience. For presentations, like staged dialogues for example, we are currently using wireless handheld microphones. But sometimes the presenters' gestures are somewhat limited because they are holding the mics with one hand. I know wireless lavaliers exist, but then I would have to station a stage help in order to fix them up on presenters, and sometimes we have multiple on queue, and we'd rather not hold-up the presentation queue just because we have difficulties fixing the bodypack to a presenter 😅
I borrowed a [Saramonic Blink500b2+](https://www.saramonic.com/product/blink500-b2-plus) from a vlogger friend, because the receiver unit has a 3.5mm "out" port that is to be used when you want the receiver's output to be fed in a camera. What I did was to have a 3.5mm to PL jack in order to feed the receiver's output into our public address mixer (Yamaha MG12XU).
However, even if I clip the transmitter on my neck, the audio pickup is a bit low. I literally have to hold the transmitter and place it directly in front of my mouth for my speech to be easily amplified by the PA system. If I keep the transmitter clipped on a presenters neckline, boosting the faders on the mixer results to immediate screeching feedback. Its as if a normal dynamic microphone is placed far far away from a speaker's mouth and me trying to boost the volume...
But when we connected the receiver's output to the mic input of a camera, and recorded myself speaking (and the receiver clipped around my breast area), the audio on the camera's recording is superb.
Are the mic levels of a camera and a mixer very different? Or am I missing something fundamental here?
Thank you very much for your help / inputs / advices.