We're playing a relatively small area and don't need a huge rig.
I usually use the Peavey 100W PA and two 10" speakers as a master and the Phonic 80W plus it's two 10" speakers as a slave and it gives me I nice bright & rounded effect.
If I use both sets of speakers on the Peavey amp it gives me 150Watts into 4 ohms for the four speakers.
Now I'm trying two Cerwin Vegas plus the two Peavey speakers which gives me 150watts into 4 ohms... from the Peavey amp.
The Cerwyn Vegas 15" speakers adding big bottom end to the mix. Line out to the Phonic 80 watt amp driving two 10" speakers @ 8 ohms adding brightness.
All in all a well rounded mix... The missing link is my own lack of vocal expertise... :-[
If I get too close to the SM58 I feel the booming from the speakers, while If I pull away it's screechie...
The rig serves the vocals and acoustic guitar plus bass drum...
My input level on the mic is at the most set at 1 so it's not too sensitive...
The Behringer bass amp serves as a monitor speaker and is not causing a problem.
Perhaps it's as simple as less bass setting on the master amp.
Any advice...?