Mon Apr 28, 2014 10:19 am
The H4n as all other ZOOMs outputs unbalanced consumer level (-10 dB). The BMCC expects balanced studio level (+4 dB). Assuming you did the cabling right you'll get a signal that is in real world usage (leaving some headroom on the ZOOM) about 20 dB below what you want. It sounds better than the build in mic and is usable for syncing or some ambient sounds (think airport
. But it introduces too much noise if pushed up in post to dialog level.
Some bold guys set the BMCC to mic and about 40%. With some luck you get something usable out of this setup. SNR is okay but sending a line signal to a mic input is neither technical ideal (impedance miss-match) nor will it prevent clipping at lower levels (according to my testing the attenuation of the BMCC is at least partly in the digital domain).
I use an Art dual usb preamp to push the signal of my Zoom H2n to the right level.
Johannes
Apple M1 Max, 32GB, 32 GB GPU – macOS Monterey
almost retired: MacPro 5.1, 48GB, RX 580 – macOS Mojave