The David L. Carrasco Job Corps Center has one atlantic technology model 172 PBM powered subwoofer. The subwoofer is making cracking like sounds from the back near the heat sinks. The sound from the subwoofer is distorted and unpleasant to listen to. We have unplugged the subwoofer. What do you suggest? Where is the nearest authorized service center in El Paso, Texas. Your help is appreciated. Stanley w. Milton, Recreation/Physical Education Manager. miltons@jobcorps.org