Harman Kardon SR900 Owners Manual - Page 9

SPEAKER SELECTOR SWITCH The Speaker Selector Switch is a 4 position switch which selects between headphone or speaker operation. It permits the connection of 2 complete speaker systems (system 1, system I and 2, or system 2). For additional information see the paragraphs on speaker connections. comouR One of the limitations of human hearing is its tendency to lose sensitivity to the very low pitched sounds as the program sound level is reduced. It is this characteristic (known as the Fletcher--Munson effect) which causes one to play music programs at high listening levels in order to experience the full rich tone available from line modern recordings. The i-larman-•Kardon CONTOUR switch compensates for this effect; thereby eliminating high listening levels as a requisite for full enjoyment of reproduced music. For warm, full-bodied reproduction at low listening levels, throw the CONTOUR switch "IN". At high levels, the contour switch has no effect. TAIT INNITOR SWITCH If your tape recorder has a special monitoring head, throwing this switch to the "IN" position will enable you to listen to your tapes a second after they are recorded. When not in use this switch must be in the "OUT" position. LOW CUT SWITCH At times, record changers, turntables and even some FM stations produce an objectionable low frequency signal that is strong enough to be introduced into the playback system. This is known as rumble and can be cancelled out by the special low frequendy cut off filter network included in this receiver. Whenever rumble is present throw the LOW CUT switch "IN". HIGH CLEF SWITCH In the event of objectionable high frequency scratch, throw the HIGH CUT switch located on the front panel "IN," This will roll off the higher frequencies and will clear up the program material considerably. This switch may also be used when listening to FM reception. It may be useful when listening to a stereophonic FM broadcast which is slightly noisy. Throwing the HIGH CUT switch "IN" will eliminate the noise. Tow CONTROL SWITCH This switch, when in the "OUT" position completely defeats the tone control circuit to provide absolutely flat response. When activated the tone controls are "IN" the circuit and can be adjusted to your own listening preference. MUTING WWI I The purpose of the looting circuit is to reduce audible noise when tuning from station to station. Since very weak signals may be muted at the same time, the front panel MUTING switch may be used to defeat the muting circuit on weak signals. To reduce intcrstation noise, throw the MUTING switch "ON". To defeat the circuit, throw the switch "OFF". STEREO-INNO SWITCH The STEREO-MONO switch is physically located as a "PUSH-PULL" function on the "BALANCE" control. When the switch is in the "IN" position the receiver is operating stereophonically. When the switch is pulled to the "OUT" position the receiver is operating monophonically. This position may be used when listening to monophonic records, or when it is desired to reproduce a stereo program, such as an FM stereo broadcast, monophonically. SELECTING MOWN IONIC Oh FM STEREO IllIOADCASTS Under normal use, the FUNCTION selector switch should be placed in the FM MONO/STEREOLOGIC position. If the receiver is tuned to a monophonic EM broadcast, the special STEREO LOGIC circuit will automatically defeat the multiplex circuitry and the tuner will reproduce monophonic sound through both channels. Should this station begin to transmit stereo, the logic circuit will automatically switch in the multiplex section and you will receive the broadcast in full stereophonic sound. Should the station conclude broadcasting in stereo, your SR900 receiver will automatically switch back to monophonic reception. The exclusive Harman-Kardon logic circuit is always operative iss even as you tune across the FM dial. As you tune to a stereophonic broadcast, the logic circuit automatically switches your receiver to the stereophonic mode of operation -- and back to monophonic as the stereo station is passed.