Harman kardon pm 660

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The Harman Kardon
Model PM660

HI-CURRENT CAPABILITY INTEGRATED
AMPLIFIER

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240 CROSSWAYS PARK WEST, WOODBUFIV, N.\/.1I797
PRINTED IN JAPAN U12~H15242A6 P437823

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PM660

CONTENTS
SPECIFICATIONS ------------------------ 2
COMPONENTS AND THEIR FUNCTIONS
FRONT PANEL ----------------------- 2,3
REAR PANEL .......................... 4
DISASSEMBLY PROCEDURES ............. 5,5
ALIGNMENT PROCEDURES ................. 6
SPECIFICATIONS

R.M.S. Power Output
Frequency Response

80W+80W at 0.06% T.H.D.(8.Q)
0.5Hz N140kHz

GENERAL UNIT EXPLODED VIEW ----------- 7,8
GENERAL UNIT PARTS LIST ------------ 8,9
ELECTRICAL PARTS LIST -------------- 10-14
PACKAGE ............................. 14
SHCEMATIC DIAGRAM ................... 15
WIRING DIAGRAM ---------------------- 16

Semiconductors 100 Transistors, 8 FETs,
16 Diodes, 20 Zener Diodes,
2 Bridge Silicon Diodes,

2 Varistors

Power Supply
General model
European model

Power Consumption

AC 110/120/220/240V, 50/60Hz
AC 220V, 50Hz
328W

(-3dB)
IM Distortion Less than 0.06%
Slew Rate IOOV/usec.
Overall Negative Feedback ISdB
S/N (IHF Phono 78dB
AUX 80dB
Phono Overload
MM More than 220mV at 1I MC More than 5mV at (Hz

Dimensions 440(W)x122(H)x360(D) mm
(17-5/16"x4-13/16x14-3/16")
Weight 12.1kg (26 lbs. 11 02.)

Specifications and components subject to change without notice.

Overall performance will be maintained or improved

COMPONENTS AND THEIR FUNCTIONS

I FRONT PANEL

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oPOWER SWITCH (POWER)
For power on and off.
When this switch is pressed after AC cord connection to
an outlet, the "wait" indicator illuminates. In about 8
seconds, the "on indicator illuminates. Operate your
PM660 after illumination of the "on" indicator.
@TONE DEFEAT SWITCH (tone defeat)
For defeating tone control by TONE CONTROL knobs
(BASS, TREBLE).
At the depressed position, flat frequency characteristic
is obtained irrespective of TONE CONTROL knob
positions.
eDISPLAY PANEL

(on/wait/tape 1/tape 2/aux/tuner/phono)
The DISPLAY panel indicates the current status of the
unIt.

on, wait: The "wait" indicator illuminates when the
POWER switch is pressed. When the circuit is stabilized,
the "wait" indicator goes off and the on indicator
illuminates. In case of short-circuit at speaker terminals,
it illuminates to indicate the abnormality.

tape 1, tape 2: TAPE MONITOR switch indicators.
aux, tuner, phona: Indicators for FUNCTION selectors.
QMAIN DIRECT SWITCH (main direct)

When this switch is depressed, the signal from the source
is directly input to the power amplifier so as to enable
sound quality improvement.

QAUDIO MUTE SWITCH (audio mute)

For attenuation of the signal level by -20dB.

Depress this switch to reduce the reproduced sound
temporarily for answering a phone call, during tuning to
another station, tape cueing and other purposes.