User manual HARMAN KARDON FESTIVAL 2

[. . . ] By following the steps below, most loudspeakers can be returned to their original factory performance with minimum effort. [. . . ] Problem 1: No sound/distorted sound from one loudspeaker in a pair (or set) Connect the dead/distorting loudspeaker to a different amplifier channel (one that had a functioning loudspeaker connected to it). If the loudspeaker still makes no sound or sounds distorted: a wire may have become loose or disconnected, the network (also known as a crossover) may be defective, the drivers (woofer, tweeter, etc) may be defective, or in very rare cases, all may be defective. The network is a small circuit board found on the inside of the terminal cup, or mounted to an inside wall of the enclosure. It sends low frequency sounds to the woofer, high frequency sounds to the tweeter and (if applicable) mid frequency sounds to the midrange driver. If the driver now sounds normal (produces a clean undistorted sound), the network is most likely defective. Tweeter: Replace the tweeter with a functioning tweeter from another loudspeaker. If the tweeter now functions normally (produces clean undistorted sound), the original tweeter was defective. If the replacement tweeter also sounds distorted or produces no sound, the network is most likely defective. [. . . ] Common causes are too much power (playing the loudspeakers too loud and causing them to distort), an amplifier with not enough power (the amplifier can't produce the required volume without distorting), excessive equalization (turning the tone controls too far clockwise, and/or engaging the loudness/bass boost button on your receiver) or some combination of the above. [. . . ]