anti sync u can create a wave if they are on opposite sides by playing with the frequency/timing . go to purple hit set and adjust the knob to make a wave , when you sync them it does stir thing up and thats good too. I run them all sorts of ways depending on if i feel like playing with them . its good to change it up once in a while , I run mine on orange reef crest mode i think its called . I have 2 mp40 on opposite sides and 1 mp 10 on the back center .