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Harman Kardon design philosophy
The TC Series amplifiers employ the key
Harman Kardon design principles of high-
instantaneous current capability (HCC),
ultrawidebandwidth, low negative feedback,
and fully discrete preamp and output
circuitry.
HCC (High-instantaneous
Current Capa,bility)
While reproducing dynamic music
signals, the instantaneous impedances of
nearly all loudspeakers drop to less than a
third of the nominal rating. These low
momentary impedances typically require
three to six times more current from the
amplifier than would a nominal Cohm
resistive load. The TC600 amplifier can
supply 100 amperes of instantaneous
current, while the TC300 and TC304 can
supply 50 amperes. This HCC provides
control over the low impedance and
fluctuating phase angles produced by
normally operating speakers, ensuring
that your speakers will be able to continu-
ally reproduce the entire dynamic range
of music without premature clipping or
current limiting.
Bridgeable
All TC Series amplifiers are designed to
provide increased power into
2
ohms
stereo or
4
ohms bridged. Unlike many
lower-quality amplifiers, the TC Series
amplifiers can
be
bridged for increased
power. Stable, reliable operation in these
higher power modes is assured by the TC
Series' wide-margin Safe Operating Area
(S.O.A.), which anticipates the toughest
operating conditions.
Ultrawidebandwidth
Unlike conventional automotive amplifi-
ers, the TC600, TC300, and TC304 can
reproduce musical frequencies ranging
from less than lOHz to more than
100kHz. This ultrawidebandwidth im-
proves the accuracy of reproduction of
transient signals and ensures phase linear-
ity.
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 unmeasurable TIM
distortion and absolutely outstanding
imaging characteristics.
Fully discrete circuitry
Rather than employing inexpensive
integrated circuits, which reduce band-
width and increase required negative