These speakers are the shame of the PA and sold very expensive for their manufacturing costs, using false promises publicitées the sound of a PS15 to neophytes who are literally ripped off.
To have already played over speakers as in ancient times I would not recommend to anyone with ears, even if the bass can EnCorr parrettres correct at the eyes of the general public have a motorola piezo réponsse catastrofique curve and make me the effect of an emetic, the more we push the more acute become aggressive and rough I even get out of a sound system that played the dessu so the result is unspeakable.
These things do not deserve the epithet of speakers, and for the beginner to be attracted not do these things I écononiser board of 70 euros and to opt for this model worthy of my home or warfedale peavey.
Note: This post is for the full range McFarlow as well as boost and KoolSound (which is simply the new guise of boost).