just one person is using the mic. he doe not cup the ball of the mic-so there is no feedback issue there. the speakers are not pointing at him or the mic. we've redirected them towards the band. we...

i would like to add more speakers or monitors to this system. we only use a sennheiser e835 mic. but i cant seem to get the vocals loud enough. I've tried different set-ups for practice and tend to...