Classe Audio CA-M400 Manual de usuario

Owner’s Manual

CA-M400

Power Amplifier

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRICAL SHOCK, DO

NOT REMOVE COVER. NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED PERSONNEL.

WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,

DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

NOTICE

All of us at Classé take extreme care to ensure that your purchase will remain a prized investment. We are proud to inform you that all

Classé components have been officially approved for the European Community (CE) mark under CE Certificate Number

C401CLA1.MGS granted on 18 July, 1996.

This means that your Classé product was subjected to the most rigorous manufacturing and safety tests in the world. The CE mark

certifies that your purchase meets or exceeds all European Community requirements for unit-to-unit consistency and consumer safety.

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 product’s 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 to the presence

of important operating and maintenance (servicing) instructions in the literature accompanying the

appliance.

Marking by the “CE” symbol (shown left) indicates compliance of this device with the EMC

(Electromagnetic Compatibility) and LVD (Low Voltage Directive) standards of the European

Community.

Important Safety Instructions

Caution:

Please read and observe all warnings and instructions in this owner’s manual and all those

marked on the unit. Retain this owner’s manual for future reference.

1. Do not attempt to service this product yourself. Do not open the cover for any rea-

son.There are no user-serviceable parts inside.An open unit, particularly if it is still con-

nected to an AC source, presents a potentially lethal shock hazard. Refer all questions to au-

thorized service personnel only.

2. To prevent fire or shock hazard, do not expose the unit to water or moisture. If a

liquid does enter your component, immediately disconnect it from the AC mains and take it

to your Classé dealer for a thorough check-up.

3. Do not place your component near any heat-producing device such as a radiator,

stove, etc., and keep it away from direct sunlight.

4. Connect your component only to an AC source of the proper voltage. The ship-

ping container and the rear panel serial number tag will indicate the proper voltage. Use of

any other voltage may damage the unit and void the warranty.

5. AC cords should be routed so that they are not likely to be walked on or pinched

by items placed upon or against them. Do not stress the AC cord by stretching it to a

plug. If damage does occur to the AC cord, take it to your Classé dealer for a thorough

check-up and proper repair or replacement.

6. If your component will be out of use for an extended period of time (vacation, etc. ), you

may wish to unplug the power cord from the AC source to prevent any chance of problems

from a voltage surge or lightning strike.

7. NEVER wet the inside of this product with any liquid.

8. NEVER pour or spill liquids directly onto this unit.

9. NEVER block air flow through ventilation slots or heatsinks.

10. NEVER bypass any fuse.

11. NEVER replace any fuse with a value or type other than those specified.

12. NEVER attempt to repair this product. If a problem occurs, contact your Classé dealer.

13. NEVER expose this product to extremely high or low temperatures.

14. NEVER operate this product in an explosive atmosphere.

15. ALWAYS unplug sensitive electronic equipment during lightning storms.

Please record the serial number for your new Classé component here for future refer-

ence.

Serial #: __________________

Contents

Welcome to the Classé family ........................................................................ 5

Unpacking and Placement ............................................................................. 6

unpacking your amplifier ..................................................................................... 6

placement ............................................................................................................ 6

ventilation ............................................................................................................ 6

custom installations .............................................................................................. 7

serial number ....................................................................................................... 7

please read this manual… .................................................................................... 7

Operating Voltage .......................................................................................... 8

warm up/break-in period ...................................................................................... 9

A Word About Installation ............................................................................ 10

Special Design Features ................................................................................ 11

highly refined circuit design ............................................................................... 11

extensive listening tests ...................................................................................... 11

extraordinary longevity ....................................................................................... 12

robust protection ................................................................................................ 12

Front Panel ................................................................................................... 13

Rear Panel .................................................................................................... 16

Initial Setup .................................................................................................. 21

configuring channels ................................................................................... 21

configuring amplifier turn-on sequences ..................................................... 22

Troubleshooting ........................................................................................... 24

Care & Maintenance .................................................................................... 26

Specifications ............................................................................................... 27

Dimensions .................................................................................................. 28

Welcome to the Classé family

Congratulations on your purchase of a Classé product. It is the result of

many years of continuous refinement, and we are sure that you will en-

joy it for many years to come.

We value our relationship with our customers. Please allow us to stay in

touch with you by returning your warranty card now, before you pack

up the shipping carton of your new product and forget all about it.

Doing so will enable us to let you know about any possible future up-

grades or updates that might become available for your Classé compo-

nent.

Sending in your warranty card also registers your product with us so

that warranty service in the U.S. and Canada can be obtained easily and

quickly, even if you have mislaid your original sales slip.

You will find the warranty registration card at the end of the separate

warranty policy booklet, enclosed.

Please, take a few minutes to fill out the warranty

registration card, and drop it in the mail.

Unpacking and Placement

unpacking your amplifier Carefully unpack your power amplifier according to the supplied in-

structions, and remove all accessories from the carton. Please take care

when lifting the amplifier, as it is quite heavy.

Important! Keep all packing materials for future transport of your

Classé product. Shipping your new component in

anything other than its purpose-designed packing

material may result in damage that is not covered by the

warranty.

placement There are two options when placing your power amplifier: you may

place it close to the speakers, requiring longer interconnecting cables

from the preamplifier; or place it close to the preamplifier, requiring

longer speaker cables.

Although either approach will yield excellent performance, you might

consider the first option for two reasons. First, signal quality degrades

more easily when transmitted as a combination of both high voltage and

high current, suggesting that speaker cables should be kept as short as

practical. Second, high quality amplifiers use massive power supplies

which inevitably radiate some degree of magnetic fields. Ideally, one

would separate these fields from sensitive source components by a rea-

sonable distance.

If it is more convenient for you to place the amplifier in an equipment

rack, along with your other components, we suggest placing it at the

bottom of the rack, well away from your source components and

preamplifier.This location will also be more stable than placing such a

heavy component near the top of a rack, which might make it top-

heavy.

Note that adequate clearance for the AC cord and connecting cables

must be left behind the CA-M400.We suggest leaving eight

inches (20 cm) of free space behind your power amplifier to allow

all cables sufficient room to bend without crimping or undue strain.

ventilation Your Classé power amplifier generates a certain amount of heat in the

course of normal operation. Be sure to allow six inches of clearance

above it and three inches to each side to allow heat dissipation through

air circulation.The vents on both the bottom and the top of the

CA-M400 must be kept free from any obstruction which would reduce

the flow of air through the unit.Avoid placement on soft surfaces that

would restrict airflow (such as plush carpeting).

custom installations Drawings are included in this manual to facilitate special installations

and custom cabinetry (see Dimensions).An optional, purpose-designed

rack mount kit is available for this product. Contact your Classé dealer

for more information.

serial number The serial number for your power amplifier is found on the rear of the

unit. Please note and record this number on page 3 of this manual for

your future reference.

the registration card. Please register your purchase so we can advise you

of updates and other items of interest.

It will take only a minute or so. Please complete the card now, before

you forget.

please read this manual… Please take a few minutes to review this manual, and to familiarize

yourself with your new amplifier.We understand that you are anxious to

plug everything in and get started. However, reading this manual and

following the advice it gives will ensure that you get all the benefits you

deserve from having purchased such a fine piece of gear.Thanks.

Operating Voltage

The CA-M400 power amplifier is set at the factory (internally) for

100V, 120V, 230V, or 240V AC mains operation, as appropriate for the

country in which it is to be sold. (230V only in European Union countries,

in compliance with CE regulations.) The voltage setting may not be

changed by the user.

Make sure that the label on the rear panel of your power amplifier indi-

cates the correct AC operating voltage for your location.Attempting to

operate your power amplifier at an incorrect voltage may damage the

unit.

Warning: The voltage setting of your power amplifier may not be

changed by the user. There are no user-serviceable parts

within the unit. Please refer any problems to an

authorized Classé service center.

If the AC mains voltage indicated on your power amplifier is incorrect,

please contact your local, authorized Classé dealer or distributor.

The CA-M400 can easily be powered by a normal 15-ampere AC

mains line. If other devices are also powered from the same AC line,

their additional power consumption should be taken into account.

The CA-M400 includes protection circuitry that will prevent the am-

plifier from operating at dangerously high or low voltages.

•At startup: the AC mains voltage must be within a range

of approximately -15% to +10% of its nominal value at

startup, or the amplifier will not turn on. For example, a

120V unit requires the AC mains to be between approxi-

mately 95V–135V in order to turn on.

•Over-voltage during operation: if the AC mains voltage

surges by roughly 10% or more during operation, the am-

plifier will enter protection mode and shut down.The

standby LED will flash to indicate the protection mode has

been engaged.

•Under-voltage during operation: if the AC mains volt-

age sags by 15% or more, the amplifier will continue to

play (since this does not present a particular danger to the

amplifier), but note that it will not be able to achieve its

usual standard of performance under these compromised

conditions.The standby LED will flash to indicate the con-

dition.

warm up/break-in period Your new Classé power amplifier will deliver outstanding performance

immediately. However, you should expect to hear it improve somewhat

as it reaches its normal operating temperatures and its various compo-

nents “break-in.” It has been our experience that the greatest changes

occur within the first 300 hours, as the amplifier reaches thermal equi-

librium and the capacitors fully form.After this initial break-in period,

the performance of your new product should remain quite consistent

for years to come.

The only exception to this rule is if the unit is placed in standby or un-

plugged for an extended period of time, allowing it to cool down. De-

pending on the degree of cooling involved, you should expect a brief

warm-up period before the power amplifier’s sound quality is at its best.

Unless your amplifier was allowed to become quite chilled, subsequent

thermal re-stabilization should not take long. Fortunately, you should

never have to repeat the initial 300 hour break-in period.

A Word About Installation

Every effort has been made to make the Classé CA-M400 simple and

straightforward to install and use.

Still, we have no way to evaluate many other variables such as the size

and shape of your room, its acoustics, and the associated equipment you

have chosen to use with your amplifier.All of these factors influence the

ultimate performance of your system.

For this reason, we strongly encourage you to have your

system installed and calibrated by your dealer, whose

experience, training, and specialized equipment can

make a profound difference in the final performance of

the system.

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