McIntosh MC303 Bedienungsanleitung

McIntosh Empfänger MC303

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McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: 607-723-3512 www.mcintoshlabs.com

MC303

Owner’s Manual

Power Amplifier

The lightning ash with arrowhead,

within an equilateral triangle, is

intended to alert the user to the

presence of uninsulated “danger-

ous voltage” within the product’s

enclosure that may be of sufcient

magnitude to constitute a risk of

electric shock to persons.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in

accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radia-

tors, heat registers, stoves, or other apparatus

(including ampliers) that produce heat.

9. Do not defeat the safety purpose of the polarized

or grounding-type plug. A polarized plug has two

blades with one wider than the other. A ground-

ing type plug has two blades and a third ground-

ing prong. The wide blade or the third prong are

provided for your safety. If the provided plug does

not t into your outlet, consult an electrician for

replacement of the obsolete outlet.

10. Protect the power cord from being walked on or

pinched particularly at plugs, convenience re-

ceptacles, and the point where they exit from the

apparatus.

The exclamation point within an

equilateral triangle is intended to

alert the user to the presence of im-

portant operating and maintenance

(servicing) instructions in the litera-

ture accompanying the appliance.

WARNING - TO REDUCE RISK OF

FIRE OR ELECTRICAL SHOCK, DO

NOT EXPOSE THIS EQUIPMENT TO

RAIN OR MOISTURE.

NO USER-SERVICEABLE PARTS

INSIDE. REFER SERVICING TO

QUALIFIED PERSONNEL.

To prevent the risk of electric shock, do not remove cover or

back. No user-serviceable parts inside.

IMPORTANT SAFETY

INSTRUCTIONS!

PLEASE READ THEM BEFORE

OPERATING THIS EQUIPMENT.

11. Only use attachments/accessories specied by the

manufacturer.

12. Use only with the cart, stand, tripod, bracket, or

table specied by the manufacturer,

or sold with the apparatus. When a

cart is used, use caution when mov-

ing the cart/apparatus combination

to avoid injury from tip-over.

13. Unplug this apparatus during lightning storms or

when unused for long periods of time.

14. Refer all servicing to qualied service person-

nel. Servicing is required when the apparatus has

been damaged in any way, such as power-supply

cord or plug is damaged, liquid has been spilled or

objects have fallen into the apparatus, the appara-

tus has been exposed to rain or moisture, does not

operate normally, or has been dropped.

15. Do not expose this equipment to dripping or

splashing and ensure that no objects lled with liq-

uids, such as vases, are placed on the equipment.

16. To completely disconnect this equipment from the

a.c. mains, disconnect the power supply cord plug

from the a.c. receptacle.

17. The mains plug of the power supply cord shall

remain readily operable.

18. Do not expose batteries to excessive heat such as

sunshine, re or the like.

Thank You

Your decision to own this McIntosh MC303 Power Ampli-

fier ranks you at the very top among discriminating music

listeners. You now have “The Best.” The McIntosh dedica-

tion to “Quality,” is assurance that you will receive many

years of musical enjoyment from this unit.

Please take a short time to read the information in this

manual. We want you to be as familiar as possible with all

the features and functions of your new McIntosh.

Please Take A Moment

The serial number, purchase date and McIntosh Dealer

name are important to you for possible insurance claim or

future service. The spaces below have been provided for

you to record that information:

Serial Number: __________________________________

Purchase Date: __________________________________

Dealer Name: ___________________________________

Technical Assistance

If at any time you have questions about your McIntosh

product, contact your McIntosh Dealer who is familiar

with your McIntosh equipment and any other brands that

may be part of your system. If you or your Dealer wish

additional help concerning a suspected problem, you can

receive technical assistance for all McIntosh products at:

McIntosh Laboratory, Inc.

2 Chambers Street

Binghamton, New York 13903

Phone: 607-723-1545

Fax: 607-724-0549

Customer Service

If it is determined that your McIntosh product is in need of

repair, you can return it to your Dealer. You can also return

it to the McIntosh Laboratory Service Department. For

assistance on factory repair return procedure, contact the

McIntosh Service Department at:

McIntosh Laboratory, Inc.

2 Chambers Street

Binghamton, New York 13903

Phone: 607-723-3515

Fax: 607-723-1917

Table of Contents

General Information

Safety Instructions ............................................................. 2

Thank You and Please Take a Moment .............................. 3

Technical Assistance and Customer Service ..................... 3

Table of Contents ............................................................... 3

General Information .......................................................3-4

Connector Information ...................................................... 4

Introduction ........................................................................ 4

Performance Features ........................................................ 4

Dimensions ........................................................................ 5

Installation ......................................................................... 6

Rear Panel Connections and Switch .................................. 7

How to Connect .............................................................. 8-9

Connection Diagrams (Separate Sheet) MC1A and MC1B

Front Panel Displays and Controls ....................................10

How to Operate .................................................................11

Technical Description ..................................................12-15

Photos ...........................................................................16-17

Specifications ....................................................................18

Packing Instruction ...........................................................19

Caution: The MC303 Amplifier weight is 150 pounds (70.3

kilograms). It requires two or more persons to safely

handle when moving the amplifier.

1. The following Connecting Cable is available from the McIn-

tosh Parts Department:

Power Control Cable Part No. 170-202

Six foot, 2 conductor shielded, with two 1/8 inch stereo

mini phone plugs.

2. For additional connection information, refer to the owner’s

manual(s) for any component(s) connected to the MC303.

3. The MC303 mutes the speaker output for approximately two

seconds when first turned on.

4. In the event the MC303 overheats, due to improper ventilation

and/or high ambient temperature, the protection circuits will

activate. The Front Panel Power Guard LEDs will continu-

ously indicate ON and the audio will be muted. When the

MC303 has returned to a safe operating temperature, normal

operation will resume.

5. For the best performance it is important to minimize an im-

pedance mismatch. An impedance mismatch can occur when a

Loudspeaker of a given impedance rating is connected to the

MC303 Output Terminals with a different impedance rating.

For example, a Loudspeaker with an impedance rating of 2

Ohms is connected to the MC303 8 Ohm Output Terminals.

The impedance of a Loudspeaker actually varies as the

Loudspeaker reproduces different frequencies. As a result, the

nominal impedance rating of the Loudspeaker (usually mea-

sured at a midrange frequency) might not always agree with

the impedance of the Loudspeaker at low frequencies where

the greatest amount of power is required.

Produktspezifikationen

Marke:	McIntosh
Kategorie:	Empfänger
Modell:	MC303
Breite:	450.9 mm
Tiefe:	558.8 mm
Gewicht:	70300 g
Produktfarbe:	Schwarz, Silber
Übertragungstechnik:	Kabelgebunden
Höhe:	314.3 mm
Zweck:	Leistung/Phase
RMS-Leistung:	900 W
Audio Kanäle:	3.0 Kanäle
THD, totalklirren:	0.005 %
Rauschverhältnis (SNR):	112 dB
Frequenzbereich:	10 - 100000 Hz
XLR-Eingang:	Ja
Lautsprecher-Konnektivitätstyp:	Polklemme
Leistungshöhepunkt pro Kanal:	300 W
Dämpfungsfaktor:	40
Output Widerstand:	8 Ohm