Marantz MA-9S1 User Manual
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:
WIDE BLADE OF THE PLUG TO THE WIDE SLOT, AND
FULLY INSERT.
TO PREVENT ELECTRIC SHOCK, MATCH THE
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
Bi-Wiring........................................................................................................................................................................... 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. T roub le shooting.................................................................................................................. 14
About the Protective Circuit................................................................................................................................14
9. Maintenance......................................................................................................................... 14
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1. Instruction for use 2. Accessories
■ Forew ord
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.
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)
●
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.
thunderstorm, to disconnect the equipment from the mains supply.
It is advisable when leaving the house, or during a
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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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