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@ HCC (High-instantaneous Current Capabil-
ity)
Recent studies have shown that while reproducing dynamic
music signals the instantaneous impedances of nearly all
loud-speakers drop to less than one third of the nominal
ratings. These low instantaneous impedances typically re-
quire 3 to 6 times more current than an 8 Ohm resistive load.
Reduced dynamic range and increased distortion will result if
the amplifier cannot provide these higher currents. For this
reason, the HK6500 and HK6300 were designed to provide
respectively 40 and 38 amperes of instantaneous current.
@ Ultrawide Bandwidth
The bandwidth of this unit is exceptionally wide and inde-
pendent of negative feedback. This improves transient accu-
racy and phase linearity.
m@ Low Negative Feedback
This unit has been designed to have low distortion and wide
bandwidth
without
high negative feedback.
This further
improves its dynamic accuracy.
@ Discrete Component Circuitry
In order to achieve the above goals, all discrete electronic
circuitry has been employed. All available integrated circuits
could not provide this high level of performance.
@ Sophisticated Electronic Protection
Harman
Kardon engineers developed a unique protection
system that permits high instantaneous current to be driven
into speaker systems but protects the amplifier from short-
circuited or damaged speakers and wires. This protection
system in no way limits amplifier output voltage or current
during music reproduction, and therefore has no negative
effect on sound quality.
M@ Phase Correct Loudness
Phase correct loudness is an exclusive Harman Kardon fea-
ture which provides two major benefits: it can equalize and
restore the low frequency response of small loud-speakers,
and it can be used in place of conventional loudness contour.
But unlike conventional bass boost circuits, Harman Kardon's
phase correct loudness also includes a phase correction
circuit that maintains clear, natural sound.
Always Use the Correct AC Voltage
Always connect the power cord to a domestic mains outlet.
Never connect the unit to an outlet supplying a higher voltage.
This may create a fire hazard.
NOTE FOR CUSTOMERS OTHER THAN CANADA
This unit is supplied with a voltage selector enabling selection
between 220V and 240V on the rear panel. If the selector is
not set to the local voltage, set the selector to the correct
voltage with a screwdriver before connecting the power cord
to a mains outlet.
Handle the Power Cord Gently
@ Do not disconnect the plug from the AC outlet by pulling the
cord; always pull the plug itself. Pulling the cord may break
the wire.
@ If your unit will be left unused for any considerable length
of time, disconnect the plug from the AC outlet.
@ Do not place furniture or other heavy objects on the cord,
and avoid dropping heavy objects on it. Also do not make a
knot in the power cord. Not only may the cord be damaged,
it can also cause a short circuit and a consequent fire hazard.
Place of Installation
Place your unit on a firm and level surface. Avoid installing
your unit under the following conditions:
¢ Moist or humid places.
e Places exposed to direct sunlight or close to heating
equipment.
e Extremely cold locations such as those in the direct draft
from an air conditioner.
~
e Places subject to excessive vibration or dust.
© Poorly ventilated places.
Do not cover the ventilation slots on the top of the unit. This
will cause the temperature inside the unit to rise, which can
eventually affect the reliability of your unit.
Moving the Unit
Before moving the unit, be sure to unplug the power cord
from the AC outlet and disconnect the interconnection cords
to other units.
Do Not Open the Cabinet
To prevent fire or shock hazard, do not tamper with internal
components for inspection or maintenance. Harman Kardon
does not guarantee against performance degradation result-
ing from any modification.
If water, a hairpin or wire accidentally enters the unit, imme-
diately unplug the power cord from the AC outlet to prevent
shock and consult an authorized
Harman
Kardon service
station. If you use the unit under this condition, it may cause
a fire or shock hazard.
Cleaning
When the unit gets dirty, wipe it with a soft dry cloth. If ne-
cessary, wipe it with a soft cloth dampened with mild soapy
water and then wipe with a dry cloth.
Never use benzine, thinner, alcohol or other volatile agents,
and avoid spraying an insecticide near the unit.
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