I have a fairly new K212 that I run with an Ampeg head. I like that it’s enough for a small club, and not so large that I can’t use it as a bass monitor in a larger venue. But when I try to use it as a monitor, I struggle to hear my bass. It’s completely lost in the stage mix, even when the cab is 2 feet away. I could roll off the lows and boost the mids, but I find myself wondering if the tweeter is working. Is there a way to test that?