Hello Ray and welcome to the Cow Audio Forum.
I’m going to guess that attenuating the audio is being done on the camera. Is that right?
If so you’re turning down everything, including the hiss. Were you to gain that back up in FCP, the hiss would probably still be there.
With any wireless system, there are two parts, transmitter and receiver. You need to feed the transmitter properly by adjusting its sensitivity to match the mic and the loudness of the source of the audio so it does not overdrive the transmitter causing distortion. Too low is also bad and results in noise.
Does the Rode system have a level indicator for the transmitter? Get that right, then proceed.
The receiver may have an input level indicator. If that’s too high, you need to reduce the sensitivity of the transmitter. The receiver also probably has an output control. That needs to be adjusted so as not to overdrive the camera input or be so low that it requires the camera input controls to be turned up so high that camera preamp noise (hiss) is audible.
Most receivers output mic level. If your camera inputs are set to line, you’ll have to boost the level a lot at the camera and that will result in noise.
Hope this helps.
Ty Ford
Cow Audio Forum Leader
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