Hafler 9270, 9180 User Manual

Series 9180/

9270 Power Amplifier

NOTICE - IMPORTANT SAFETY INFORMATION

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.

WARNING: TO PREVENT FIRE OR

SHOCK HAZARD, DO NOT EXPOSE THIS

EQUIPMENT TO RAIN OR MOISTURE.

READ INSTRUCTIONS

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.

All the safety and operating instructions of your Hafler equipment should be read before power is applied to the

equipment.

RETAIN OWNERS MANUAL

These safety and operating instructions should be retained for future reference.

HEED WARNINGS

All warnings on the equipment and in the operating instructions are important and should be followed.

FOLLOW INSTRUCTIONS

All operating and use instructions are important and should be followed.

HEAT

The equipment should be kept away from areas of high temperature, such as heater vents, radiators, stoves/ovens, fireplaces, etc.

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.

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.

POWER CORD PROTECTION

9. 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

General Information

INSTALLATION

Rackmounting.. Ventilation/Placement.. Line Voltage..

OPERATION/CONNECTIONS

Power Cord Connection/Power

Inputs .....................................................................................................................................

Front

Panel

View Diagram..

Rear

Panel

View Diagram

Outputs Gain

Mono/Stereo Switching.. Soft Turn-On

Thermal

CIRCUIT HIGHLIGHTS

..................................................................................................................................

Controls..

Protection System ..................................................................................................

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System ............................................................................................................

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Switch.. ...............................................................................

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6 7

8 8 8 8 8

ADDITIONAL INFORMATION

Loudspeaker Load Impedance Considerations Changing Line Voltage Rating Adjusting General Troubleshooting Ground Cleaning/Maintenance

Parts List..............................................................................................................................

Functional Block Component Layout Circuit

SERVICE POLICY AND

Bias ......................................................................................................................

Loops ......................................................................................................................

........................................................................................................

Diagram..

Schematic

Diagram

LIMITED WARRANTY..

.............................................................................................

Hints ............................................................................................

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10 10 11 1 1

12 14 15 17

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PERFORMANCE SPECIFICATIONS

All specifications are for 20 Hz - 20 kHz, at full power into 8 ohms, unless specified otherwise.

GENERAL

INFORMATION

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:

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

0.3 Hz to 116 kHz

greater than 100

47,000 ohms

1.4 volts RMS

1.6 volts RMS 300 to 1 50 V/uS

Power Switch, Left/Right Gain Controls, Mono/Stereo Switch Right and Left/Mono RCA jacks

0.025%,

kHz,

typically 0.005% at 1 kHz

dB,

unweighted

200 to 10 kHz

outputs:

Power Consumption: Size:

Weight:

9180: 9270:

Right, Left, and Mono 100 watts quiescent, 1200 watts maximum 17”(W) x

43.2cm(W) faceplate

33 Ibs., 15 kg, net. 35 Ibs., 15.9 kg, net.

12.5”(D) w3.5”(H) x

31.7cm(D)

43.2cm

48.3cm(W)

5-Way

Binding Posts

excluding feet, faceplate 17” or

8.9cm(H)

excluding feet,

19”(W)

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INSTALLATION

IEC Type 320, 3-wire,

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. 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.

Due to conflict with adjacent equipment, it may be advisable to remove the four rubber

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 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 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.

120

VAC are supplied with a detachable AC power cord. The female connector plugs

unswitched

outlet, then the amplifier’s power should be controlled by the front panel

When operating the amplifier in the Mono Mode, only the left channel input should be used.

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