Harman Kardon HK1680 Owners Manual - Page 6
listen, broadcasts, FM/AM, preset, memory, 9kHz/EVEN, 10kHz, selector
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To listen to broadcasts To tune to an FM station manually, press the FM or AUTO FM pushbutton (17) (16) and place the TUNING button (25) in its MANUAL position (in). To scan to higher frequencies, press the TUNING UP button (35), releasing it when the desired frequency has been found. To scan to lower frequencies, press the TUNING DOWN button (34). During scanning, no sound will be audible at any time, even as you pass frequencies that contain broadcasts. This feature protects your audio system and loudspeakers from sudden high level signals. As you scan, the SIGNAL STRENGTH display (29) will help you locate broadcasts. To tune to an AM station, press the AM pushbutton (18), and follow the same procedure. The QUARTZ LOCK indicator (30) will light any time the receiver is properly tuned to any station. To scan automatically, place the TUNING button (25) in its AUTO position (out). When you press the TUNING UP button (34) or TUNING DOWN button (35), the hk1680 will automatically scan in the desired direction, stopping at each station to play several seconds of music, If the system is not disengaged by placing the SCAN STOP button (24) in its "on" position (in), the hk1680 will continue scanning and sampling until disengaged. In its "on" position (out) the MUTING button (28) will automatically reject weak or distant stations that would give poor reception. To receive these stations, press the MUTING button (28) to its "off" position (in). When the TUNING button (25) is in its AUTO position (out), the muting function is enabled regardless of the MUTING button position. You can adjust the action of the muting circuit in your hk1680 by using the MUTE ADJUST control (43) on the rear panel. The mute adjust is set at the factory so that you can receive the maximum number of stations. You may wish to alter the setting to mute some of the weaker and noisier FM stations by adjusting the MUTE ADJUST control (43) clockwise. When the MUTE ADJUST control (43) is turned fully clockwise, all but the strongest FM stations are muted. During adjustment of the MUTE ADJUST control (43) make sure the TUNING button (25) is in its MANUAL position (in). When the AUTO FM button (16) is selected, the hk1680 will automatically shift into the mono mode when the signal is too weak for good stereo reception. To receive weak stations in mono (and reduce noise), press the FM button (17) instead. FM/AM preset memory Each of the FM/AM PRESET MEMORY buttons (23) on the hk1680 can store one AM station and one FM station in memory for easy recal l. Once registered in memory, these stations may be recalled simply by selecting either the AM or FM band with the function selector buttons, then depressing the proper FM/AM PRESET MEMORY button (23). To register a station in memory, first locate the station as described earlier, and press the SCAN STOP button (24). Then press the MEMORY button (22) and the word MEMORY will appear at the right hand side of the frequency display (33). Within 5 seconds after pressing the MEMORY button (22) press any of the 6 AM/FM PRESET MEMORY buttons (23) to store a station in memory. To recall a station from the memory at any time, simply select the proper function (FM or AM) and press the appropriate FM/AM PRESET MEMORY button (23). Any time any of the FM/AM PRESET MEMORY buttons (23) is pressed, and the MEMORY button (22) is also pressed, the previously registered station wil l automatically be cancelled and the new one registered. Whenever the receiver is turned on, it will automatically tune to the last station you listened to, regardless of whether that station was registered in memory or not. When recall ing stations from the memory, the FM/AM PRESET MEMORY push buttons should not be pushed in rapid succession. There should be at least a 1 second interval between the selection of each station. Note: If power to hk1680 is cut for any reason, a battery backup system will activate to prevent preset stations from being cancelled from the memory. Momentary power cuts will not affect the memory. However we recommend that you do not connect the hk1680 to an outlet that may inadvertently be turned off. Otherwise excessive battery drain may occur. ODD (9kHz)/EVEN (10kHz) selector The ODD (9kHz)/EVEN (10kHz) SELECTOR (54) is used for matching the tuning step of your hk1680 with the frequency step of the AM/FM stations in your area. With the selector placed in the ODD (9kHz) position, tuning step of the hk1680 is set to 9kHz for AM broadcasting; it also sets tuning step for FM broadcasting to 50kHz automatically. Setting it in the EVEN (10kHz) position sets the tuning step to 10kHz for AM and 200kHz for FM broadcasting. 5