You haven't provided much detail regarding the trouble you've had, but since you mention high pass and low pass, I would high-pass every channel except kick, bass, keys and break music around 100 or even higher. I also high pass the monitor busses up to 200, and have seen others go as high as 400! Make sure you have the mains on when you check to see how the monitors sound so the mains and subs fill in the bottom. Bring the low pass down on the monitors until you start to hear it on vocals. This is just a start. I might have more suggestions if you provide more details on what's gone wrong.
One more pearl of wisdom. If your band mates control their own monitor mixes and have wedges rather than IEMS, make them get it right at sound check and leave it alone. There is nothing worse than having someone mess with their mix in the middle of the set without telling you, introduce a bunch of feedback then expect you to fix it when you have music to play.
That's true, I guess I didn't want to muddy the HPF question wth other things. I did say 'high pass/Low cut filter' not anything low pass. My question was specifically aimed at ballpark, starting point HPF settings and there ae plenty here to work with. Thank you all.
To teh details, my main issues have really been with the monitor side of things. FWIW I use 2 to 6 QSC K12 for mains along with 2 to 4 KW181 subs, and everyone in the 4 piece band gets a K12 for a floor monitor. The drummer plays an electric kit and he gets an added kSub in a side fill drum stach about 4'-5' away to round things out. I had run things quite nicely with an A&H MixWiz 16 and a few rack EQs. In fact, the first time I used that setup with this new band they raved. They still reference that job. Best any of them had had, including the drummer. No issues, plenty of volume and clarity, minimal EQing needed. Shortly after that I got the bug to go digital, again, after seeing the XR18. Just a fabulous package for what I need. So I did. In between I left the prior project and moved full time to this new band so not a lot of live work to experiment with but now have four jobs of differing sizes to reference.
In this order there was one medium basic bar setup, one smaller basic bar setup, one large banquet hall style venue with a large high steel stage, hollow underneath, and boxy, gym/aerobics studio style room. Compounding things is that I have tried three different control platforms across the last three months. First the iPad. A) because I had it and B) because I was familiar. This was pre-recent update. It wasn't great then, and a friend decided to 'help us out' that first night and run from the front. Job 1 night told me I needed a dedicated control unit so that I didn't have to give up my playing notes and lyrics. The Android was the next trial because most folks found that to be really primitive and clunky. At that time, some ways better than the iPad and in many other ways not. But neither suited me yet. Then, because I really liked the X-Air PC interface I decided a Windows based 2-in-1 was going to solve my problems. Interestingly, about the time that PC #2 arrived there was teh major XAir update for all platforms and that made the iPad a whle new ballgame. But, after trying a couple different convertible models, and breaking it out at job 2, that was miserable. Not touch responsive and damn if things weren't tiny! just not for me. So for that second job I went back to the iPad to get through. Again, FOH was great, monitors just not wheer they had been. So I ditched and sold the windows machind and wehn back to deciding if teh Android or iPad was going to be it. At job three we had the luxury of seting up a couple days early and testing some things out. FRont side of things came together quickly, as had been teh pattern. But again, the monitors were just impossible. Odd feedback, high and low sneaking up out of seemingly no where. no clarity, everything seemed on teh edge of badness yet no one was happy with what they had. Frustration and panic was setting in and banging away on that Android interface was the last straw. We ended up turning the kSub down in the drum stack and that identified one issue it seems. We think the hollow staging compounded our issues but don't know. The entire show was a crappy compromise in getting through. After that I decided that the iPad woudl become my main control and teh Android woudl hold my noted and be available as a backup.
And, job 4 was the worst. FOH up and running with flying colors. Monitors were possessed. Drum stack was a battle that I lost to little useful coming through and the same low hornish feedback or high 4k style feedback. Standing in front of it with the iPad watching the RTA the EQ seemed to have no effect on anything. The main singers monitor was so hot and even when his Aux was muted the signal continued to come out. I was again baffled. And frustrated. The night was shot for everyone before it started. At this point is where I decided to simply reset everything ans start from scratch. Hoping that somewhere in my playing around and many devices that a setting or two got changed that I could not ID. I once had a similar circumstance with a Presonus 16.4.2 on an early job wheer there was monitor signal passing where there shouldn't have been any and I found some FX dialed in somewhere it didn't belong. Hoping that my incompetence with this unit caused the same issues.
Whatever issues I have I am 99.9% sure they are self inflicted. And because I can have stellar results with the same equipment on an analog board and endless misery with this digital system means I am clearly not understanding something very basic. Finding that is teh challengs before teh next job. But, as the weather improved here in teh northeast I'll be able to get to the garage and set some things up for live testing that Ive not been able to do the past few months. Thay will bring some peace of mind as well.
