Re: Roll off & attentuate on mic capsule or on mixer/recorder?

All suggestions here are good thus far. Brian, when I read Min's post about AC hum, I read air conditioning hum, in which case the mixers HPF would work to cut down on. Many mixers have variable HPF settings (some continuously variable) and work well for low level audible (not induced) hums and what not. However, not all clients want you to roll off the low end. I've done a lot of live shots where the studio didn't want me to roll off the low end, even though it gets rid of pesky background noises but doesn't really affect the voice reproduction.

Freelance Sound Technician/Mixer