Read Harman Kardon SIGNATURE 1.5 (serv.man5) Service Manual online
Signature 1.5
Harman Consumer Group
250 Crossways Park Drive
Woodbury, N.Y. 11797
1-800 645-7484 in the USA
A Harman International Company
Part No.: 1112-SIGNATURE1.5 Rev A 7/99
TECHNICAL MANUAL
Two Channel Amplifier
1
Two Channel Amplifier
Harman Kardon
SIGNATURE 1.5
TABLE OF CONTENTS
SPECIFICATIONS....................................................................1
Signature 1.5 FRONT PANEL CONTROLS............................2
FEATURES ..............................................................................2
REAR PANEL CONNECTIONS...............................................3
INSTALLATION........................................................................4
OPERATION ............................................................................6
IDLE CURRENT ADJUSTMENT FOR SIGNATURE 1.5.......6
OUTPUT TRANSISTOR REPLACEMENT ..............................6
Signature 1.5 FRONT PANEL CONTROLS............................2
FEATURES ..............................................................................2
REAR PANEL CONNECTIONS...............................................3
INSTALLATION........................................................................4
OPERATION ............................................................................6
IDLE CURRENT ADJUSTMENT FOR SIGNATURE 1.5.......6
OUTPUT TRANSISTOR REPLACEMENT ..............................6
ON THE SIGNATURE 1.5
TROUBLE SHOOTING............................................................7
PROTECT MODE ....................................................................7
Signature 1.5 MECHANICAL EXPLODED VIEW....................8
Signature 1.5 MECHANICAL PARTS LIST.............................9
TROUBLE SHOOTING............................................................7
PROTECT MODE ....................................................................7
Signature 1.5 MECHANICAL EXPLODED VIEW....................8
Signature 1.5 MECHANICAL PARTS LIST.............................9
Signature 1.5 PACKING EXPLODED VIEW ...........................9
Signature 1.5 POWER SWITCH/INDICATOR PCBs .............10
Signature 1.5 POWER AMPLIFIER PCB Rev B....................11
Signature 1.5 Electrical Parts List ..........................................12
Signature 1.5 (120V) TRANSFORMER WIRING Rev A........14
Signature 1.5 (120V) TRANSFORMER WIRING Rev B........15
Signature 1.5 (230V) TRANSFORMER WIRING Rev A........16
Signature 1.5 (230V) TRANSFORMER WIRING Rev B........17
INTEGRATED CIRCUITS.......................................................18
Signature 1.5 POWER SWITCH/INDICATOR........................19
Signature 1.5 POWER SWITCH/INDICATOR PCBs .............10
Signature 1.5 POWER AMPLIFIER PCB Rev B....................11
Signature 1.5 Electrical Parts List ..........................................12
Signature 1.5 (120V) TRANSFORMER WIRING Rev A........14
Signature 1.5 (120V) TRANSFORMER WIRING Rev B........15
Signature 1.5 (230V) TRANSFORMER WIRING Rev A........16
Signature 1.5 (230V) TRANSFORMER WIRING Rev B........17
INTEGRATED CIRCUITS.......................................................18
Signature 1.5 POWER SWITCH/INDICATOR........................19
SCHEMATIC (1 of 1)
Signature 1.5 POWER AMP SCHEMATIC (1 of 2) ...............20
Signature 1.5 POWER AMP SCHEMATIC (2 of 2) ...............21
Signature 1.5 POWER AMP SCHEMATIC (1 of 2) ...............20
Signature 1.5 POWER AMP SCHEMATIC (2 of 2) ...............21
SPECIFICATIONS
Power Requirements:
120V version: . . . . . . . . . . . . . . . 120VAC, 50/60Hz
230V version: . . . . . . . . . . . . . . . 230VAC, 50Hz
Power Output: . . . . . . . . . . . . . . . . . . . 2 x 200 watts @8 ohms
20Hz - 20kHz, <0.03% THD, Both Channels Driven
1 x 700watts @ 8 ohms
20Hz - 20kHz, <0.03% THD, Bridged Mono Mode
2 x 350 watts @ 4 ohms
20Hz - 20kHz, <0.03% THD, Both Channels Driven
High-Current Capability: . . . . . . . . . . . . 130 Amps
Frequency Response:. . . . . . . . . . . . . . <1Hz - >170kHz ±3dB
Power Bandwidth: . . . . . . . . . . . . . . . . <5Hz - >160kHz
THD/IMD: . . . . . . . . . . . . . . . . . . . . . . <0.03% at rated output
Crosstalk . . . . . . . . . . . . . . . . . . . . . . >-87 dBr between any two channels at maximum output
Negative Feedback: . . . . . . . . . . . . . . . <25dB
Input Impedance: . . . . . . . . . . . . . . . . . 33K ohms
Input Sensitivity: . . . . . . . . . . . . . . . . . 1 volt for rated output
Remote Trigger Voltage: . . . . . . . . . . . . 6 - 12 volts DC (tip of plug must be “positive”(+))
Remote Trigger Impedance: . . . . . . . . . 20K ohms
Dimensions (H x W x D): . . . . . . . . . . . 7 ½ x 17 ¼ x 15 ¼ inches
Frequency Response:. . . . . . . . . . . . . . <1Hz - >170kHz ±3dB
Power Bandwidth: . . . . . . . . . . . . . . . . <5Hz - >160kHz
THD/IMD: . . . . . . . . . . . . . . . . . . . . . . <0.03% at rated output
Crosstalk . . . . . . . . . . . . . . . . . . . . . . >-87 dBr between any two channels at maximum output
Negative Feedback: . . . . . . . . . . . . . . . <25dB
Input Impedance: . . . . . . . . . . . . . . . . . 33K ohms
Input Sensitivity: . . . . . . . . . . . . . . . . . 1 volt for rated output
Remote Trigger Voltage: . . . . . . . . . . . . 6 - 12 volts DC (tip of plug must be “positive”(+))
Remote Trigger Impedance: . . . . . . . . . 20K ohms
Dimensions (H x W x D): . . . . . . . . . . . 7 ½ x 17 ¼ x 15 ¼ inches
191 x 438 x 387 mm
Weight:. . . . . . . . . . . . . . . . . . . . . . . . 47 lbs/21 kg
2
Two Channel Amplifier
Harman Kardon
SIGNATURE 1.5
Signature 1.5 FRONT PANEL CONTROLS
harman/kardon 1.5
On/Off
I G N A T U R E
s e r i e s
S
1
2
3
1 Power Switch: Press this switch to turn the 1.5 on for
manual operation, or to place it in the Standby mode for
automatic/remote turn-on when the 1.5 is connected to a
device with a compatible trigger circuit.
Note: Even when the Power Switch is off, the unit is still
connected to the AC power supply.
2 Power-On Indicator: When the word SIGNATURE is
illuminated in blue, the 1.5 is in a normal operating
condition.
3 LED Indicator: The color of this indicator varies with the
status of the 1.5. It is red when the unit is off and in Manual
Operation, amber in the Standby mode, and flashing green
during Warm-Up. If the indicator flashes and alternates
between red and amber, the 1.5 is in the Protect mode,
indicating a problem in the unit or connections to the
speakers.
FEATURES
The Harman Kardon Signature 1.5 is a flexible, state-of-the-art audio power amplifier designed to deliver high
performance for use in home theater or music reproduction applications. The following are among its many
features:
n
Designed and manufactured in the United
States
States
n
High-current output capability
n
Two channels with bridgeable outputs
n
Ultrawide bandwidth design
n
Low negative feedback
n
Low harmonic and intermodulation distortion
n
Massive heat sinks for quiet convection cooling
n
High-current power supply
n
Remote turn-on/turn-off circuitry with select
Signature Series and Harman Kardon products
or through optional accessories.
Signature Series and Harman Kardon products
or through optional accessories.
3
Two Channel Amplifier
Harman Kardon
SIGNATURE 1.5
REAR PANEL CONNECTIONS
5 Channel One Output: When the amplifier is being used in
the two-channel (Stereo) mode, connect the right channel
speaker to the positive (+) and negative (-) terminals. When
the amplifier is being used in the Bridged Mono mode
connect the Positive (+) terminal ONLY to the Negative (-)
terminal on your speaker.
6 Channel One Input: When the amplifier is being used in
the two-channel (Stereo) mode, connect the right channel
output of your preamp or processor to this input jack. When
the amplifier is being used in the Bridged Mono mode, this
jack is not used.
7 Bridge/ Normal Switch: When the amplifier is used for
two-channel stereo operation, this switch should be in the
NORMAL position. For Bridged Mono use only, place the
switch in the BRIDGE position.
8 Channel Two Output: When the amplifier is being used
in the two-channel (Stereo) mode, connect the left channel
speaker to the positive (+) and negative (-) terminals.
When the amplifier is being used in the Bridged Mono mode
connect the Positive (+) terminal ONLY to the Positive (+)
terminal on your speaker.
Important Note: When the 1.5 is used in the Bridged Mono
mode, do not connect a speaker with an impedance less
than 8 ohms.
9 Channel Two/ Bridged Input: When the amplifier is
being used in the two-channel (Stereo) mode, connect the
left channel output of your preamp or processor to this input
jack. When the amplifier is being used in the Bridged Mono
mode, connect the output of your preamplifier or other
line-level signal source to this jack.
10 Power Amp Trigger Input: Connect this jack to a
matching 6- to 12-VDC trigger output on a compatible
device to have the 1.5 automatically turn on from the
Standby mode when voltage is applied from the triggering
unit. Note that a 3.5mm mono mini-plug with a positive tip
should be used for the connection.
11 AC Power Cord: Connect this plug to a non-switched
AC outlet. Due to the high-current draw of the Signature 1.5,
it is NOT recommended that the accessory outputs on the
back of audio/video components be used to power this
product.
4
MIN
W
4
MIN
W
8
MIN
W
SPEAKER
SPEAKER
IN
IN
CHANNEL ONE (RIGHT)
CHANNEL TWO (LEFT BRIDGE)
1
2
AC INPUT
AC 120V/60Hz 600W
6
7 8
9
10
11
5
BRIDGE IN
POWER AMP
TRIGGER IN
BRIDGE
NORMAL
(
) BRIDGE (
)
