Chas, bring a signal from your vocalist into the line in on the back of the K4, you also have a control knob there to set the input level..It will only be heard in the K4 speakers...
Also, I am not interested in 400 posts....I want 600 post..
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I am waiting for more feedback, from the guys that purchased the 802's...I think they are amazing....Now if they only hold up..So far they have taken all I pushed through them...