Ty nailed it with the need to monitor the whole signal chain. I’m using Senneheiser G3s to an EX1, here’s my setup.
G3 transmitter with Countryman B6 standard capsule, input gain on xmit set to -18 or -21 depending on source SPL. With orig Senn mic, input set to -24. This is for general speaking, not music, but each mic requires input adjustment on the transmitter.
If going straight into camera, output of rcvr set to 0, input of camera set to -35 mic level input, input level control knob set to 5- that gives me some easy adjustment. The receiver cannot generate anywhere near enough output to use line input.
I use an older Sennheiser ME80 supercardioid with K3U pow supply, cam input set at -59 (if I remember) with the level control on 5.
Most of the time I use a mixer in between, but the settings above took me a while to figure out to get stellar sound with no distortion. I find the EX1 to be extremely finicky and even on all manual control there seems to be some auto attenuation at higher levels that can throw off the metering vs what you hear.
Another thing to do is plug headphones directly into the output jack of the receiver and listen to the quality of sound before it enters the camera.
I also noticed on the Lectro manual “Important Note: Before using transmitters with the UCR100 Receiver, make sure they are set to
100 Series Compatibility Mode. Refer to your transmitter’s Quick Start Guide for instructions on how to change compatibility modes.” Not sure what that refers to but another source of unsatisfactory sound.
Steve

