Marantz SC-7S1 User Manual

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Model SC-7S1 User Guide

Stereo Control Amplifier

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE THE 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.

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.

7.Water and Moisture – Do not use this product near water-for example, near a 17. Power Lines – An outside antenna system should not be located in the vicinity of

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.

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.

e.If the product has been dropped or damaged in any way, and

f.When the product exhibits a distinct change in performance – this indicates a need for service.

22.Replacement Parts – When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.

23.Safety Check – Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.

24.Wall or Ceiling Mounting – The product should be mounted to a wall or ceiling only as recommended by the manufacturer.

25.Heat – The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products (including amplifiers) that produce heat.

Table of Contents

 

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

2

Foreword .................................................................................................................................................................................

2

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

2

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

2

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

2

How to use batteries. ................................................................................................................................................................

2

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

2

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

3

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

4

Connection 1 Stereo connection .......................................................................................................................................

4

Balanced terminal ...............................................................................................................................................................

5

Connection 2 Bi-Amp Connection

 

(Speaker system needs to comply with Bi-Amp connection) ............................................................................................

6

Bi-Amp (Connection) ..........................................................................................................................................................

7

Connection 3 Complete Bi-Amp Connection

 

(Speaker system needs to comply with Bi-Amp connection) ............................................................................................

8

Complete Bi-Amp connection ............................................................................................................................................

9

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

10

Connection 4 5.1ch multi-channel connection ...............................................................................................................

11

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

12

For use of Remote control .......................................................................................................................................................

14

6. Standard operation .............................................................................................................

15

How to Play ..........................................................................................................................................................................

1 5

How to record ......................................................................................................................................................................

1 5

7. How to operate functions and how to set up ....................................................................

16

Attenuate function .............................................................................................................................................................

1 6

How to set up attenuation level .......................................................................................................................................

1 6

Trim adjustment function ..................................................................................................................................................

1 7

8. Specification ........................................................................................................................

19

Specification ........................................................................................................................................................................

1 9

Dimensions ...........................................................................................................................................................................

1 9

9. Block diagram ......................................................................................................................

19

10. Trouble shooting .................................................................................................................

20

11. Maintenance ........................................................................................................................

20

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1. Instruction for use

Foreword

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

Equipment mains setting

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

“SC7S1/N1G” version product can be powered by 230 V AC only.

“SC7S1/U1G” version product 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.

How to use batteries

Improper use of batteries may cause the risk of fluid leakage or explosion.

Be especially careful in the following points.

Insert the batteries with the correct and polarity as indicated inside the battery case.

Do not use a brand-new battery and used battery together.

Dry cell batteries may produce different voltages even when their shapes are the same. Do not use different types of batteries together.

Some batteries are rechargeable and some are not. Be sure to read the caution and instructions described on each battery.

Used batteries should be disposed of in compliance with the treatment method specified for your local area.

2. Accessories

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

AC Power Cable

(Model SC7S1/N1G)

(Model SC7S1/U1G)

Remote Control RC-7S1SC

TRIM MODE

EXIT

ATT

A

TRIM

B

BALANCED

SACD/CD

 

LINE 1

LINE 2

 

 

 

VOLUME

TAPE

 

 

RC-7S1SC

AAA (R03) Batteries

Remote Cable

Instruction Manual (this Copy)

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3. Main features of this product

The concept: channel separation for super wide range & dynamic audio

We think it’s of the utmost importance to extend high frequency response as well as channel separation so you can hear the true meaning of “Super Audio.”

This is why we have designed the input and output circuitry, volume control section, and power supply circuits according to this philosophy.

The result: an astonishing channel separation of over 100dB at 20kHz.

Fully balanced control amp with an linear volume control

The SC-7S1 is a full balanced, two-channel control amp providing the channel separation you need for Super Audio. Based on our own high quality four-gang active volume control we have developed an even better linear control volume that reduces gang errors from 0 to 100dB, ±0.5dB. By adding an additional HDAM SA (High Definition Amplifier Module), we improved the Common Mode Reject Ratio (CMRR) dramatically, attaining an incredible ultra-wide frequency band of 150kHz and succeeded in producing the perfect control amplifier for Super Audio CD.

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 Modules (HDAM), a separeted module operating as a buffer for the amplifier. The SC-7S1 has four HDAM SAs on each inputoutput buffer and another four units on the V/I converter.

Choke input system

In the power supply section, the choke input topology was adopted to drastically reduce rectifier harmonic noise. This system is especially suitable for a control amplifier in which very small signal amplification occurs.

Floating control bus system

We make it possible to synchronously drive two or more control amps by using a floating control bus system connected to as many as 6 sets of control amplifiers. We also enable you to trim levels using the remote control, making it easy to set up the optimal sound field on a multi-channel configuration. The highest achievable stereo performance can be accomplished when a system configured with two sets of SC-7S1 and four sets of MA9S1 are connected in a bi-amped mode.

You will experience superb sound with unbelievable channel separation.

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4. Connections

Connection 1 Stereo connection

SACD Player / CD Player

CD Recorder / Tape Deck

RIGHT ANALOG LEFT

OUTPUTS

UNBALANCED

BALANCED

or

SC-7S1

INPUT

BALANCED

SACD/CD

1 LINE 2

TAPE

PUSH

 

 

 

A

CH

BI-

AMP

PUSH

B

CH

To connect analog output of

FM tuner, VCR.

L

R

I N P U T O U T P U T

ANALOG

ID NO.

1

2

3

Setting 1

4

5 6

REC

 

PRE OUT

 

REMOTE

 

OUT

UNBALANCED

BALANCED

CONTROL

ID NO.

 

1

2

 

 

 

 

 

 

 

IN

2

 

 

 

 

 

3

 

 

 

 

 

4

 

 

 

 

 

5

 

 

 

 

 

6

 

 

 

 

OUT

MODE

STEREO BI-AMP

MODE

STEREO BI-AMP

Setting STEREO

or

 

 

or

 

 

 

 

MA-9S1

 

 

MA-9S1

 

 

For L ch

 

 

For R ch

ATTENUATOR (-dB)

 

ATTENUATOR (-dB)

 

-3

0

 

-3

0

 

-6

 

 

-6

 

 

-9

 

 

-9

 

 

-12

 

 

-12

 

 

-

 

 

-

 

 

INPUT

 

INPUT

 

BALANCED

UNBALANCED

BALANCED

UNBALANCED

PUSH

PUSH

 

1

2

 

1

2

 

 

1

 

 

1

 

 

SPEAKERS

 

 

SPEAKERS

 

 

2

 

 

2

This connection can have options i.e. You may connect the units using either balanced or unbalanced cables to connect your SACD/CD and control Amp, as well as the SC-7S1 with MA-9S1s. But you can not inter match.

4

4. Connections

Connection 1–4 are recommended by Marantz for SC-7S1 with Marantz MA-9S1.

If using the MA-9S1s, Please read the instruction manual for the MA-9S1.

Name and Function P13

Standard set-up in using Marantz Monaural Power Amp

MA-9S1.

Please refer to this connection in the event of using other Power

Amps also.

SC-7S1 doesn't have a Phono equalizer. So in the event of using a turn table, please use a Phono equalizer to connect with the SC-7S1.

In the event that stereo L ch signal has been wired with A ch input, the signal will come out of the pre-out of the A ch. Please pay attention to L ch, R ch if SC-7S1 is connected with other equipment.

Balanced terminal

The balanced output connector uses a XLR connector.

The XLR connector is internally wired in either of the following two systems.

1. USA system (Pin 2 = COLD, Pin 3 = HOT)

2 . European system (Pin 2 = HOT, Pin 3 = COLD)

The SC-7S1 uses the USA system of 1.

When a preamp or main amplifier adopting the European system is connected using a cable with XLR balanced connectors, the reproduced signal may be inverted of phase.

In this case, correct the wiring of one of the XLR connectors on the extremities of the cable to the USA system by exchanging the connections of pins 2 and 3. This will make it possible to play the signal with the correct phase.

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