Harman Kardon HK6850G Owners Manual - Page 2
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Thank you for choosing a Harman Kardon integrated amplifier. This is a superb piece of high fidelity equipment that has been meticulously designed to provide you with thousands of hours of enjoyment. This manual describes the features and capabilities of your new integrated amplifier. In addition, it describes the proper method for connecting your integrated amplifier to your system. Please read this owner's manual and use your integrated amplifier only in accordance with its instructions. Keep the manual in a safe place for future reference. 1 HK6850 and HK6950R Features Discrete circuitry Rather than employing simple integrated circuits in the amplifier section, the HK6850 and HK6950R use completely discrete (separate) electronic components for greatly improved linearity and less distortion. HCC (High-instantaneous Current Capability) While reproducing dynamic music signals, the instantaneous impedances of nearly all loudspeakers drop to less than a third of the nominal rating. These low instantaneous impedances typically require three to six times more current from the amplifier than a nominal 8 ohm resistive load requires. The HK6850 and HK6950R integrated amplifiers can provide respectively 70 and 90 amperes of instantaneous current, which ensures that your speakers will be able to continually reproduce the entire dynamic range. Ultrawide bandwidth Unlike ordinary integrated amplifiers, the HK6850 and HK6950R can reproduce musical frequencies ranging from less than 10Hz to more than 100kHz. This ultrawide bandwidth improves the accuracy of reproduction of transient signals and ensures phase linearity. Low negative feedback This design philosophy is used by the world's most exclusive amplifiers. It requires the highest quality internal components, and results in an extremely stable amplifier with unmeasureable TIM distortion and absolutely outstanding imaging characteristics. Main direct The PREAMPLIFIER BYPASS switch routes the source signal directly to the input of the amplifier, bypassing all tone controls and other preamplifier circuitry. The signal is therefore attenuated only by the high-quality volume control, resulting in very pure sound quality. Tone defeat The TONE DEFEAT switch causes the source signal to completely bypass the tone control circuitry. This results in unaltered, completely accurate musical reproduction. Electronic function switching The controls on the front panel of the HK6850 and HK6950R switch input and output connections electronically through the use of high fidelity electronic analog switches. Harman Kardon's simple and elegant electronic design makes possible complex component configurations. In addition, this allelectronic circuitry ensures that the switches will function quietly and reliably for the life of the unit. High voltage/high current design Harman Kardon has designed the HK6850 and HK6950R to be able to handle low impedances and unstable speaker loads that would destroy less rugged amplifiers. While the HK6850 and HK6950R can easily manage these loads, the unit can be set to provide higher voltage and even more power into higher impedance loudspeakers, allowing you to use the unit to full capacity. Phase correct loudness contour Harman Kardon's exclusive Phase correct loud- ness circuitry provides a special fixed equalization curve that compensates for the ear's decreased sensitivity at low volumes. This special circuitry is unusual in that it corrects for midrange phase errors inherent in low frequency loudness equalization. The result of this correction is that low frequencies sound clear and natural, with no coloration or degradation of stereo imaging. Active/passive phono section with MM and MC inputs A switch on the front panel of the HK6850 and HK6950R sets up the gain and input impedance of your amplifier's internal circuitry to match the type of cartridge being used on your turntable. The HK6850 and HK6950R provide you with both a passive (unamplified) phono section for use with standard moving magnet phono cartridges, and an active (amplified) phono section for use with moving coil (low output) phono cartridges. You can connect both moving coil and moving magnet cartridge inputs and use the switch on the front panel to select between them.
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