Harman Kardon TC600 Owners Manual - Page 9

System configurations This section describes some of the system configurations possible with the TC Series amplifiers. Low-level input to amplifier TC-Series amplifiers are most commonly used with a low-level (preamp) input signal from the head unit. A control on the T C Series amplifiers enables you to adjust the input signal level for optimum performance. (See the "Controls and operations" section for information on adjusting input level.) High-level input to amplifier All TC Series amplifiers can also accept a high-level (speaker-level) input signal from a head unit that has no preamp-level outputs. In this situation, the leads from your head unit that would ordinarily connect directly to your speakers are instead connected to the input of the TC Series amplifier. A control on the TC Series amplifier enables you to adjust the input signal level for optimum performance. (See the "Controls and operation" section for information on adjusting input level.) Normal stereo or four-channel full-range operation ("Full-range" means that a single amplifier provides the entire spectrum of audio frequencies to a speaker or speakers with no electronic crossover used.) Either the TC600 or the TC300 am~lifiecran be used in a normal two-channel stereo installation in which the amplifier provides power for both the left and right channels. The TC304 can be used in a normal four-channel installation in which the amplifier provides power for left and right channels, both front and rear