400 Wrms power handling Ideal for high power cabinets Overload protection circuit The pxb-5k 0 high pass filter features an advanced circuit design to preserve both the crossover & the HF drivers. Custom-built aerospace lamps are used as positive temperature coefficient series varistors to dynamically maintain a safe maximum current level to the HF driver without introducing distortion. ideal to be used with high power horn tweeters such as the Eminence APT80 Order Code RC99H or APT150 Order Code RC98G. Spare lamps available Order Code VW79L