Originally posted by MxRacerCam:
a hlcd is a horn loaded compression driver. like what is used in many PA setups. their advantage is that they play quite low and have retardedly good sensitivity. their downside is, in a car, they require a horn (the flared "port" that the compression driver attaches to) to be fairly wide(usually 12-24" depending on design), and the compression driver itself is usually the size of a baseball or softball.




um ok in laymens terms what the hell is it..and what does it do?