Marantz MA-9S1 User Manual

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Model MA-9S1 User Guide

Monaural Power Amplifier

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK)

NO USER-SERVICEABLE PARTS ARE INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL

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 product.

WARNING

TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE.

CAUTION: TO PREVENT ELECTRIC SHOCK, MATCH THE WIDE BLADE OF THE PLUG TO THE WIDE SLOT, AND FULLY INSERT.

IMPORTANT SAFETY

INSTRUCTIONS

READ BEFORE OPERATING EQUIPMENT

This product was designed and manufactured to meet strict quality and safety standards. There are, however, some installation and operation precautions which you should be particularly aware of.

1. Read Instructions – All the safety and operating instructions should be read before the product is operated.

2.Retain Instructions – The safety and operating instructions should be retained for future reference.

3.Heed Warnings – All warnings on the product and in the operating instructions should be adhered to.

4.Follow Instructions – All operating and use instructions should be followed.

5.Cleaning – Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.

6.Attachments – Do not use attachments not recommended by the product manufacturer as they may cause hazards.

7.Water and Moisture – Do not use this product near water-for example, near a bath tub, wash bowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, and the like.

8.Accessories – Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturer’s instructions, and should use a mounting accessory recommended by the manufacturer.

9.A product and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the product and cart combination to overturn.

10.Ventilation – Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating, and these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or other similar surface. This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer’s instructions have been adhered to.

11.Power Sources – This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply in your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions.

12.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 grounding type plug has two blades and a third grounding prong. The wide blade of the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

AC POLARIZED PLUG

13.Power-Cord Protection – Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product.

14.Protective Attachment Plug – The product is equipped with an attachment plug having overload protection. This is a safety feature. See the Instruction Manual for replacement or resetting of the protective device. If replacement of the plug is required, be sure the service technician has used a replacement plug specified by the manufacturer that has the same overload protection as the original plug.

15.Outdoor Antenna Grounding – If an outside antenna or cable system is connected to the product, be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built-up static charges. Article 810 of the National Electrical Code, ANSI/NFPA 70, provides information with regard to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna-discharge unit, connection to grounding electrodes, and requirements for the grounding electrode. See Figure 1.

16.Lightning – For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product due to lightning and power-line surges.

17.Power Lines – An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal.

18.Overloading – Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result in a risk of fire or electric shock.

19.Object and Liquid Entry – Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.

20.Servicing – Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.

21.Damage Requiring Service – Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions:

a.When the power-supply cord or plug is damaged.

b.If liquid has been spilled, or objects have fallen into the product.

c.If the product has been exposed to rain or water.

d.If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation.

 

 

 

Table of Contents

 

1. Instruction for use .................................................................................................................

2

Foreword

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

 

 

2

Equipment mains setting ..........................................................................................................................................................

2

Copyright ..................................................................................................................................................................................

 

 

 

2

Precautions ...............................................................................................................................................................................

 

 

2

2. Accessories ...........................................................................................................................

 

2

3. Main features of this product ...............................................................................................

3

4. Connections ...........................................................................................................................

 

4

Connection 1 Stereo Bi-wiring Connection .....................................................................................................................

4

B i - W i r i n g ...........................................................................................................................................................................

 

 

5

Wiring

the

speaker system ........................................................................................................................................

5

Wiring

speaker

cable ...................................................................................................................................................

5

Connection 2 Stereo Bi-Amp Connection ........................................................................................................................

6

Bi-Amp

(wiring) ..............................................................................................................................................................

 

7

Wiring

the

speaker system ........................................................................................................................................

7

Connection 3 Stereo complete Bi-Amp Connection .......................................................................................................

8

Complete Bi-Amp Connection ......................................................................................................................................

9

Balanced

terminal .........................................................................................................................................................

9

Installing the SACD multi-channel audio speakers ...........................................................................................................

10

Connection 4 5.1ch multi channel Connection ...............................................................................................................

11

Wiring

speaker

system ...............................................................................................................................................

11

5. Name and function ..............................................................................................................

12

6. Specification ........................................................................................................................

 

13

7. Block diagram ......................................................................................................................

 

13

8. Trouble shooting ..................................................................................................................

14

About

the

Protective Circuit ................................................................................................................................

14

9. Maintenance .........................................................................................................................

 

14

1

1. Instruction for use

 

2. Accessories

 

 

 

Foreword

This section must be read before any connection is made to the mains supply.

Equipment main AC power setting

Your Marantz product has been prepared to comply with the household power and safety requirements that exist in your area.

MA 9S1/N1G can be powered by 230 V AC only. MA 9S1/U1G can be powered by 120 V AC only.

Copyright

Recording and playback of any material may require consent. For further information refer to the following:

Copyright Act 1956

Dramatic and Musical Performers Act 1958

Performers Protection Acts 1963 and 1972

any subsequent statutory enactments and orders

Precautions

The following precautions should be taken when operating the equipment.

General Precautions

When installing the equipment ensure that:

the ventilation holes are not covered;

air is allowed to circulate freely around the equipment

it is on a vibration free-surface;

it will not be exposed to interference from an external source;

it will not be exposed to excessive heat, cold, mois ture or dust;

it will not be exposed to direct sunlight;

it will not be exposed to electrostatic discharges

Never place heavy objects on the equipment.

If a foreign body or water does enter the equipment, contact your nearest dealer or service center.

Do not pull out the plug by pulling on the mains lead, pull from the plug itself. It is advisable when leaving the house, or during a thunderstorm, to disconnect the equipment from the mains supply.

After opening the cover of the packing box, check that the following accessories are included.

AC Power Cable

(MA 9S1/N1G)

(MA 9S1/U1G)

Instruction Manual (this Copy)

2

3. Main features of this product

The concept : Instantaneous current delivery capability

Even if amplifiers have the same power specifications, their performance may not be the same due to a difference in current delivery capability.

The delivery capability of power amplifiers depends on how instantaneous the current supply is.

That’s why the power supply for the MA-9S1 was completely revamped to give it a truly instantaneous current supply capability that has been increased three times as much compared to any Marantz product designed before.

Fully balanced monaural power amp

To minimize the influence of strong “return current” occurring from the loudspeaker system, the circuit for the power amp consists of two amplifiers giving a voltage gain amp of 23dB, in a push-pull balanced construction, for the final buffer amp of 6dB.

HDAM SA

The feedback impedance of the Current Feedback circuit was reduced to its minimum to make it faster.

We developed a new High Definition Amplifier Module (HDAM), a separated module operating as a buffer for the amplifier.

Choke input system

The power supply of the voltage gain amplifier’s adopted choke input system has few ripples and is durable with load changes.

This can prevent noise from the amplifier as well as reduce noise from the primary winding, resulting in a clean power supply.

Ultra low impedance amplifier

The buffer amplifier’s power supply block, which supports the high current delivery capability, uses a capacitance input system to realize very low impedance.

The Super Ring Power transformer, the low impedance electrolytic capacitors, the very large gauge internal wiring, and the thick pattern PCB all contribute in supplying the required power.

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