Re: PA Setup Question
Many years ago I always had to fight with monitors to keep em from squealing. I had cheap wedges and 15 band eq. I thought I needed to spend all my cash on the mains.
I did upgrade over the years and it got better but was often still THE challenge most nights. Then I got the religion!
At a get together organized by Bennett and John Ciara, a bunch of us got to play with a wide variety of pro wedges - 13 different ones if I remember (several in pairs). Some got "stupid loud".
Feedback resistance seemed to correlate with the stiffness of the cabinet (that is, the wedges that went loudest without feedback were the heavy ones)!!
Wow! I got to borrow a pair of FBT powered boxes as part of "Road Test" and use them for my problem band. What a difference! I was able to stop fussing over the monitor mix and work on how it sounded out front. Very liberating!
So I bought a bunch of heavy wedges, 55lbs each though I remember Trace Knight saying that any wedge worth using needed two stage hands to move it 
Anyway, the moral of the story is to get good wedges and place them correctly if monitors are important to you.
