How to control the volume of Impulse Responses?

Hey guys,
I’m capturing some devices with Ableton Lives IR measurement device and noticed huge differences in loudness when I convolve signals through those IRs.
I´m not 100% firm with the math behind this process, but tried a few things, like changing the volume of the IRs themselves. It didn’t affect the output volume.
Can someone elaborate on that?

cheers!