Harman kardon ca 70

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The Harman Kardon

Model CA70 Manual 176A
HIGH FIDELITY CAR AMPLIFIER

Tecemfiwfl Mammal

The following marks found in the parts list of this manual
identify the models as follows.

C : North America area model

0 : International model

0 :Japan mode

harman/kardon

P aaaaa d Service Office
240 Crossways Park West,Woodbury,N.Y. 11797
1112-3152176A9 P-1 29108 1200 Printed in Japan

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SPECIFICATIONS

Number of Channels:

Continuous Average :
Power per Channel, All Channels Driven
from 20 Hz - 20 kHz

HCC :

Frequency Response:

Signal-to-Noise Ratio:

Input Sensitivity/Impedance :

Power Supply:

Dimensions (H x W x D):

Weight :
Accessories

Power Cord with Fuse and Holder (Res) :

Ground Cord (Black):
Connector with Tube:
Mounting Screw:

2

35 Watts @ < 0.1% THD into 4 Ohms

35 Watts @ < 0.3% THD into 2 Ohms

70 Watts @ < 0.3% THD bridged into 4 Ohms
:30 Amps

5 Hz - 100 kHz (+0, -3dB)

100 dB

250 mV/22 k9 (variable)

DC +14.4 V (11 - 16 V usable), negative ground
2.05" x 10.6" X 6.7"

(52 x 270 x 170 mm)

5 lbs. 1 oz (2.3 kg)

1 pc.
1 pc.
1 set
1 set

FEATURES

I 30 Amperes of HCC (High Instantaneous Current
Capability) maintains a wide dynamic range and low
distortion when driving low impedance or reactive
loads.

I High Power Output of 35 watts per channel into 4
Ohms, 35 watts per channel into 2 Ohms and 70
watts bridged into 4 Ohms.

I Ultrawide Bandwidth is achieved by the use of
inherently fast open-loop circuitry. This improves
transient accuracy and phase linearity.

I Low Negative Feedback
Highly linear circuitry produces low distortion with
on|y25dBofnegativefeedback.Thisfurtherimproves
dynamic accuracy.

I DiscreteComponentAudioCircuitryisused because
it was found to be the only way to provide HCC,
Ultrawide Bandwidth and Low Negative Feedback.

GENERAL INSTRUCTIONS

0 Be surethat metal objects or other foreign materials
do not enter the unit. This can cause immediate
trouble or reduce the unit's long»term reliability.

0 It is natural for this unit to become warm while
operating. It incorporatesthermal protection circuitry
to shut off the unit when operating abnormally.

0 It is recommended that this unit be operated in a
vehicleonlywhilethe engine(and electricalcharging
system) is running. At high powercutput. ittypically
draws about as much current as an automobiles
headlights, and therefore can eventually discharge
the battery.

0 The speaker output terminals are protected from
damage due to short-circuited speakers or speaker
wires. When this protection circuitry is momentarily
activated, the power output is muted for several
seconds and is then restored. When the terminals
are continuously short-circuited, the power output
will remain muted. Should the latter occur, shut off
the unit and check the speakers and speaker wires.

I A High Capacity Power Supply enables stable
operating voltages even under high power
conditions. This results in improved low frequency
sound quality.

I High Heat Dissipation Capability is provided by a
large heatsink, efficient circuitry and rugged circuit
components.

I Protection Circuitry assures reliability under high
temperature, reverse-voltage and short-circuit
conditions, without degrading the sound quality
during normal high power operation.

I Simultaneous Stereo/Bridged Operation provides
operating flexibility, system simplicity and added
value.

0 The heat generated by this amplifier is dissipated
into the air by the entire chassis. If it is covered, or
becomes dirty so that the circulation of the air
around it is reduced, the unit's ability to dissipate
heat will also be reduced. Under most conditions,
the heat dissipating capability of this unit is more
than enough to provide uninterrupted operation.
However, when full powerisdrawn in an already hot
environment, any loss in heat dissipating capability
is likely to result in activating the thermal protection
circuits.

0 When replacing the fuse, be sure to use an identical
value (15 ampere) auto fuse.

0 If your unit behaves abnormally, turn it off

immediately and consult an authorized Harman
Kardon Service Station.