Hafler 9180 Series, 9270 Series Owner's Manual
NOTICE - IMPORTANT SAFETY INFORMATION
WARNING: TO PREVENT FIRE OR
SHOCK HAZARD, DO NOT EXPOSE THIS
EQUIPMENT TO RAIN OR MOISTURE.
The lightning flash with arrowhead symbol within
an equilateral triangle is intended to alert the
user to the presence of uninsulated “dangerous
voltage” within the products enclosure, that may
be of sufficient magnitude to constitute a risk of
electric shock to persons.
The exclamation point within an equilateral
triangle is intended to alert the user of the
presence of important operating and mainte-
nance (servicing) instructions in the literature
accompanying the appliance.
1.
READ INSTRUCTIONS
All the safety and operating instructions of your Hafler equipment should be read before power is applied to the
equipment.
2.
RETAIN OWNERS MANUAL
These safety and operating instructions should be retained for future reference.
3.
HEED WARNINGS
All warnings on the equipment and in the operating instructions are important and should be followed.
4.
FOLLOW INSTRUCTIONS
All operating and use instructions are important and should be followed.
5.
HEAT
The equipment should be kept away from areas of high temperature, such as heater vents, radiators, stoves/ovens,
fireplaces, etc.
6.
VENTILATION
The equipment should be used in an area suitable for proper ventilation. Care should be taken not to impede airflow
in and around the cabinet. Do not mount on a carpeted shelf or in a sealed enclosure. Allow for proper clearance
above the equipment.
7.
WATER AND MOISTURE
The equipment should not be used in or around water, such as a bathtub, sink, or swimming area. Also, the equipment
should not be used in areas prone to flooding, such as a basement.
a.a.
POWER SOURCES
The equipment should be connected only to a power source of the same voltage and frequency as that listed on the
rear panel above the power cord entry point.
9.
POWER CORD PROTECTION
Power cords should be arranged so that they do not interfere with the movement of objects in the room: people, fan
blades, utility carts, etc. Also, care should be taken that the cord is not pinched or cut, and placed so that it is not
in danger of being pinched or cut, as in under a rug, around a tight corner, etc.
10. POWER CORD GROUNDING
The power supply cord is of a three wire grounded type, designed to reduce the risk of electric shock sustained from
a live cabinet. It is assumed to be of suitable length for most uses of the equipment. The use of extension cords and
power strips is discouraged unless they are of suitable rating to deliver the required total current for safe operation
of all connected equipment. Furthermore, extension cords or power strips must provide the same three wire
grounded connection. It is important that the blades of the equipment’s plug be able to fully insert into the mating
receptacle. Never remove the round grounding pin on the plug in an attempt to mate to a two wire ungrounded
receptacle: use a grounding adaptor with the grounding tab or wire suitably connected to earth ground.
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11. NON-USE PERIODS
During periods of extended non-use, the power cord should be unplugged from the power source.
12. CLEANING
The equipment should be cleaned only as detailed in the operating instructions.
13.
OBJECT AND LIQUID ENTRY
Care should be taken so that objects and/or liquids, such as cleaning fluids or beverages, are not spilled into the
enclosure of the equipment.
14. DAMAGE REQUIRING SERVICE
Hafler equipment should be serviced by qualified service personnel when:
A. The power supply cord or plug has been damaged, or
B. Objects have fallen, or liquid has been spilled into the equipment, or
C. The equipment has been exposed to rain, or
D. The equipment does not appear to operate normally or exhibits a marked change in performance, or
E. The equipment has been dropped, or the enclosure has been damaged.
15. SERVICING
The user should not attempt to service the equipment beyond that which is described in the operating instructions.
All other service should be referred to qualified service personnel.
16. CARTS AND STANDS
The equipment should be used with carts or stands only of sufficient strength and stability for the use intended.
An equipment and cart combination should be moved with care. Quick stops and starts, excessive force, and
uneven surfaces may cause the equipment and cart combination to topple.
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TABLE OF CONTENTS
PERFORMANCE SPECIFICATIONS
..........................................................................................
4
General Information
..............................................................................................................
4
INSTALLATION
Rackmounting..
......................................................................................................................
5
Ventilation/Placement..
.........................................................................................................
5
Line Voltage..
.........................................................................................................................
5
OPERATION/CONNECTIONS
Power Cord Connection/Power
Switch.. ...............................................................................
5
Inputs .....................................................................................................................................
5
Front
Panel
View Diagram..
..................................................................................................
6
Rear
Panel
View Diagram
....................................................................................................
7
Outputs
..................................................................................................................................
8
Gain
Controls..
......................................................................................................................
8
Mono/Stereo Switching..
.......................................................................................................
8
Soft Turn-On
System ............................................................................................................
8
Thermal
Protection System ..................................................................................................
8
CIRCUIT HIGHLIGHTS
...............................................................................................................
9
ADDITIONAL INFORMATION
Loudspeaker Load Impedance Considerations
...................................................................
10
Changing Line Voltage Rating
.............................................................................................
10
Adjusting
Bias ......................................................................................................................
10
General Troubleshooting
Hints ............................................................................................
11
Ground
Loops ......................................................................................................................
1 1
Cleaning/Maintenance
........................................................................................................
12
Parts List..............................................................................................................................
12
Functional Block
Diagram..
.................................................................................................
14
Component Layout
Diagram..
.............................................................................................
15
Circuit
Schematic
Diagram
.................................................................................................
17
SERVICE POLICY AND
LIMITED WARRANTY..
.....................................................................
19
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PERFORMANCE SPECIFICATIONS
GENERAL
INFORMATION
All specifications are for 20 Hz - 20 kHz, at full power into 8 ohms, unless specified otherwise.
Power Rating: 9180:
9270:
Rated THD:
Full Power Bandwidth:
Signal to Noise Ratio:
Input Impedance:
Input Sensitivity: 9180:
9270:
Damping Factor:
Slew Rate:
Controls:
Inputs:
outputs:
Power Consumption:
Size:
Weight:
9180:
9270:
105 watts per channel (8 ohms)
150 watts per channel (4 ohms)
300 watts mono (8 ohms)
135 watts per channel (8 ohms)
200 watts per channel (4 ohms)
400 watts mono (8 ohms)
less than
0.025%,
typically 0.005% at 1 kHz
0.3 Hz to 116 kHz
greater than 100
dB,
unweighted
47,000 ohms
1.4 volts RMS
1.6 volts RMS
300 to 1
kHz,
200 to 10 kHz
50 V/uS
Power Switch, Left/Right Gain Controls, Mono/Stereo Switch
Right and Left/Mono RCA jacks
Right, Left, and Mono
5-Way
Binding Posts
100 watts quiescent, 1200 watts maximum
17”(W) x
12.5”(D) w3.5”(H)
excluding feet, faceplate 17” or
19”(W)
43.2cm(W)
x
31.7cm(D)
x
8.9cm(H)
excluding feet,
faceplate
43.2cm
or
48.3cm(W)
33 Ibs., 15 kg, net.
35 Ibs., 15.9 kg, net.
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INSTALLATION
RACK-
MOUNTING
VENTILATION/
PLACEMENT
LINE
VOLTAGE
The 9180/9270 Amplifier is supplied in either a 17” Black Version, or a 19” Silver Version. The 19”
model has rackmounting holes provided for installation in equipment racks. The holes are on standard
EIA spacings.
Due to conflict with adjacent equipment, it may be advisable to remove the four rubber
feet from the bottom of the unit. The feet may be removed from the outside, with no dis-assembly of
the chassis necessary.
The 9180/9270 Amplifier can produce considerable heat during normal operation. The amplifier should
be placed on a hard, smooth surface to allow air to circulate beneath the unit. Additionally, allow at least
one inch of free space on either side, and several inches above and behind the amplifier to allow air
circulation around the heatsinks. This is particularly important when the unit is installed in a closed
cabinet.
In applications where the amplifier is driving low impedance and/or low efficiency loudspeakers at high
levels, thermal shutdown may occur if inadequate ventilation is provided. If this occurs, it may be
necessary to move the amplifier to a location with better free air circulation.
The amplifier should be located at least several inches away from sensitive components, (such as
preamplifiers, tuners, CD players, turntables, etc.) due to the possibility of audible hum or buzz from
magnetic radiation.
The 9180/9270 Amplifier is configurable for either 100, 120, 220 or 240 volt operation. This is
accomplished by moving the Voltage Selector on the printed circuit board. The procedure is detailed
in the section “CHANGING LINE VOLTAGE RATING”.
Make sure that the unit is configured for your local AC line voltage before attempted use. The
configuration is labelled directly above the power cord connector.
OPERATION/CONNECTIONS
POWER CORD
CONNECTION/
POWER SWITCH
INPUTS
Units wired for 100, 220 and 240 VAC are supplied without power cords. Local agents will supply cords
with male connectors appropriate to the local standard.
Units wired for
120
VAC are supplied with a detachable AC power cord. The female connector plugs
into the receptacle provided on the rear panel. This power cord is a standard IEC Type 320, 3-wire,
16 gauge assembly. Should replacement ever be necessary, be sure to replace it with an identical cord.
Never remove the grounding pin from the male end of the cord. In applications where a grounded outlet
is not available, a ground adaptor should be employed, with the ground tab or wire of the adaptor
connected to a suitable earth ground.
The AC power cord of the amplifier must be connected to a receptacle capable of delivering a minimum
of 1200 watts. The convenience outlets of some preamplifiers are not rated for this power level. Before
connecting the amplifier, be sure to check the rating of such outlets, and take into account the power
consumption of any other connected components to determine the total maximum power consumption.
If the amplifier is connected to a component with a switched convenience outlet, then the amplifier’s
Power Switch may be left ON at all times, and the power controlled by the switched outlet. If the amplifier
is connected to an
unswitched
outlet, then the amplifier’s power should be controlled by the front panel
Power Switch.
All input connections to the amplifier must be performed with the amplifier off!
The left and right audio inputs to the amplifier are via standard RCA jacks. In addition to the printed
labelling above the jacks, the channels are identified by RED for right channel, and WHITE for left
channel. Connect these jacks to the output of the preamplifier or other signal source.
When operating the amplifier in the Mono Mode, only the left channel input should be used.
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