Audio Note MEISHU Phono Silver Signature Technisches Handbuch

MEISHU Phono

Silver Signature

INTEGRATED AMPLIFIER

OWNER’S INFORMATION

1) IMPORTANT SAFETY INFORMATION

2) CE DECLARATION OF CONFORMITY

DISPOSAL

POWER REQUIREMENTS

3) INTRODUCTION

4) OVERVIEW

UNPACKING AND INSTALLATION

5) VALVE INSTALLATION

6) CONNECTION

7) OPERATION

8) TECHNICAL SPECIFICATIONS

9) WARRANTY INFORMATION

10) CONTACT INFORMATION

CONTENTS

! IMPORTANT SAFETY INFORMATION !

RISK OF SHOCK OR ELECTROCUTION! INTERNAL OPERATING

VOLTAGES ARE LETHAL!

Do not remove top cover, unless specifically instructed to do so in the user

manual.

This unit contains fuses and other safety components in accordance with

BS60065 requirements.

In the event of failure, replacement fuse or safety component must be of

the same part type and value.

This product generates high levels of heat. Adequate ventilation must

be provided. Do not restrict airflow through any ventilation slots or

place the unit on any surface that may restrict airflow.

Valve equipment operates at extremely high temperatures;

KEEP OUT OF THE REACH OF CHILDREN AND ANIMALS.!

Do not store or operate this unit in areas of high humidity or in close

proximity to water / moisture.

Do not expose or immerse the unit in liquid of any kind.

This product must be earthed –ensure that the mains supply cable earth /

ground is correctly connected.

OTHER SAFETY PRECAUTIONS: -

Never touch the power cord with wet hands.

Always remove the power cord by grasping the plug, not the cable.

Never expose the unit to excessive heat or magnetism.

Never let an inexperienced person repair or reassemble the unit.

Never put anything, especially metal objects, inside the unit.

Never place excessive weight on the unit.

SUCH REPLACEMENT MUST ONLY BE CARRIED OUT BY A

QUALIFIED SERVICE TECHNICIAN.

Do not attempt to replace any fuses without first disconnecting the unit from

the mains electricity supply.!

CE DECLARATION OF CONFORMITY

DISPOSAL

This product must not be disposed of as normal household waste. To

prevent possible harm to the environment please separate the product

from other waste to ensure that it can be recycled in an environmentally

safe manner. Please contact your retailer or the appropriate local

government office for collection facilities.

We declare under our sole responsibility that this product is in conformity

with the following standards or standardized documents:

BS EN 60065 in accordance with the regulations 73/23/EEC, 89/336/EEC

(from 1 January 1997)

CE 94

Peter Qvortrup,

Director

Audio Note (UK) Limited

25 Montefiore Road

Hove

East Sussex

BN3 1RD

United Kingdom

Tel: +44 (0)1273 220 511

Fax: +44 (0)1273 731 498

POWER REQUIREMENTS

Power requirements for electrical equipment vary depending on your geographical

location. Please ensure that your unit meets the power requirements in your area. The

power requirement for your unit is marked on the serial number plate, located on the

rear panel.

If you are in doubt, please contact your dealer before plugging the unit into the mains

supply.

Thank you for purchasing this Audio Note (UK) product. With the correct care it

should give you many years of pleasure and enjoyment.

Please take the time to read all of the information in this manual before connecting

your new component to an electrical supply or your system, to ensure both your

safety and satisfaction.

Please note that due to our desire to continually improve products, specifications are

subject to change without notice. Therefore it is important to refer to the manual that

is supplied with your product for the most accurate information; manuals downloaded

from our website or obtained from other sources may no longer fully apply to your

product.

If you have any questions regarding the information contained within this document

or your new component, please feel free to contact us: -

Audio Note (UK) Limited

25 Montefiore Road

Hove

East Sussex

BN3 1RD

United Kingdom

Tel: +44 (0)1273 220 511

Fax: +44 (0)1273 731 498

e-mail: [email protected]o.uk

INTRODUCTION

Congratulations on your purchase of the Audio Note (UK) Meishu Phono Silver

Signature Integrated Amplifier.

It is a Pure Class A Singled Ended valve amplifier that uses the highly regarded 300B

direct heated triode valve, producing a level of performance that is radically superior

to the vast majority of current designs.

It has been specifically engineered for sonic performance rather than technical

specification, and fulfills all Audio Note (UK) Level 3 criteria: -

Pure Class A operation

Zero Negative Feedback

Single Ended Output Stage

Valve Rectification

Directly Heated Triode operation

Materials and component quality

The Silver Signature version builds upon the already superb performance of the

standard Meishu, and features the following additions: -

Audio Note Silver wiring

Audio Note Copper Foil signal capacitors

Audio Note Tantalum film resistors

IHiB C-core output transformers

Please take care when unpacking your Meishu Phono Silver Signature Integrated

Amplifier. Choose a clean, clear location to unpack your unit. Be aware that the

amplifier is very heavy; before attempting to unpack or lift the unit, check the weight

and if necessary use more than one person so that it can be moved safely and

easily.

We recommend that you retain and carefully store all of the original packing

materials, in case transportation / shipping is required at a later date.

Select a suitable location for the unit. This should be a dry, dust free and level area,

preferably shielded from direct sunlight and free from vibration. Also ensure that the

location is stable and capable of carrying the weight of the unit.

A suitable mains power outlet must be close to the location; power cords must not be

pulled or stretched tightly in an attempt to reach a wall socket. If the power cord will

not easily reach the socket, choose a closer location!

Please ensure that adequate ventilation for the unit is provided, and that airflow

through any ventilation slots in the unit is not restricted. We recommend a distance of

at least 30cm free space is maintained above the unit. Please also remember that

valve equipment operates at extremely high temperatures, so a position that is

inaccessible to any children or animals is essential.

MEISHU PHONO SILVER SIGNATURE

UNPACKING AND INSTALLATION

(Note; all internal images show the Meishu Line amplifier. The Meishu Phono Silver

Signature also contains an extra phonostage board, located to the left of the main

circuit board)

The amplifier is shipped without the 3 large valves installed. It is necessary to install

the valves first.

It is essential that the valves are installed correctly or serious damage that is not

covered by the warranty will result. We recommend that your dealer perform

this procedure for you if you are in any way unsure.

FIRSTLY, ENSURE THAT THE AMPLIFIER IS NOT CONNECTED TO A MAINS

ELECTRICAL SUPPLY, AND THAT THE POWER CORD IS NOT CONNECTED TO

THE AMPLIFIER.

Using a No.2 pozidrive® screwdriver, remove the 6 x screws for the top and 7 x

screws for each side of the top cover.

Now remove the 3 valves that are packed inside the amplifier. Also inspect the inside

of the amplifier to check that nothing has become damaged during transit including

the remaining 5 smaller valves.

Carefully unwrap the 3 valves. You will find the following: -

2 x 300B valves

1 x 5U4G valve.

Once again, please understand that it is absolutely vital these valves are fitted

correctly.

Looking from the front of the amplifier install the 300B valves first: -

VALVE INSTALLATION

FRONT

Inspect a 300B valve base and you will notice that two of the pins are larger than the

other two; this is to help ensure that the valve can only be inserted one way.

The larger pins must face each other when each valve is inserted into the appropriate

valve base on the central board.

With gentle but firm pressure insert the valve into its socket. Check again that both

valves are fully inserted correctly in to their respective valve sockets.

Looking from the front of the amplifier, insert the 5U4G valve into the last empty

socket located on the right, situated between two smaller valves. Locate the rib on

the central pin of the valve and align with the valve base (it can only be inserted one

way due to this locating rib) and with gentle but firm pressure insert the valve.

Check once again that all valves are correctly fitted, and then replace the top

cover.

VALVE INSTALLATION Continued…

Line inputs Four line level inputs are available for connection to CD, Aux, Tuner

and Tape In.

Connect the ‘Line Out’ sockets of your Recording device to the ‘Tape

In’ sockets of the Meishu, and the ‘Tape-Out’ sockets on the Meishu to

the ‘Line In’ sockets of your Recording device.

Phono input The Meishu Phono Silver Signature is equipped with a high quality,

valve, Moving Magnet (MM) phonostage. Connect the cables from

your tonearm to the ‘Phono’ socket inputs. If your turntable is

equipped with a separate earth wire, connect this to the dedicated

grounding / earth post, located next to the ‘Phono’ input sockets.

If you wish to use a low output Moving Coil (MC) cartridge, Audio Note

manufactures a series of Step Up Transformers for this purpose. For

further information, please contact your Audio Note (UK) Dealer, or

alternatively please contact us direct.

Ground Post A ground post is provided for connection to those source components

that also use a separate ground terminal.

Speakers Each channel is equipped with 3 colour coded binding posts for

connection to your speakers.

Looking from the front of the amplifier, the 3 binding posts to the left

are for the left channel and the 3 binding posts to the right are for the

right channel.

Connect the amplifiers black speaker output binding post marked as

“0” to the black / negative terminal (also marked “ –“) on the speaker.

Connect the amplifiers red speaker output binding post marked “8

Ohm” to the red / positive terminal (also marked “ + “) on the speaker.

The other red speaker output binding post is marked “4 Ohm” and

may be used with 4 Ohm speakers. If you are uncertain whether your

speaker system is specified as 4 or 8 Ohm, try the following test once

all other connections are made and the amplifier is operational.

Compare the sound quality using a familiar recording with the

speakers connected to the 8 ohm connections and then the 4 Ohm

connections respectively. The selection that produces the best

frequency balance and maximum dynamics should be used.

Mains The Meishu is equipped with an IEC 320 mains inlet socket. Use the

supplied mains cable to connect the unit to the local mains supply.

The mains fuse and a spare is located in the inlet socket fuse drawer.

CONNECTION

Once all the connections are completed and checked, ensure that the volume control

is at the minimum setting (rotated all the way left).

Turn on the amplifier by using the rocker switch located on the rear top right of the

back panel, just above mains inlet socket.

The red front panel light should now be lit. The amplifier requires approximately two

minutes to initialize before it is ready for operation.

Function Selector Turn the selector to the source you wish to listen to; choose

from Phono, CD, AUX or Tuner.

Record Selector This selector allows you to listen to the output from your

Recording Device, if one has been connected. Turn the

selector to ‘Source’ to listen to the input chosen with the

Function Selector, and turn to ‘Tape’ to hear the output from

your Recording device.

Volume Control This control adjusts the listening level, or loudness. Set as

desired!

Balance Control This control adjusts the relative left/right levels. Use this control

if necessary to equalize the loudness from each speaker.

Bedding in The new amplifier requires about 200 hours of initial use (called

“bedding in”) before the circuitry becomes stable and optimum

performance is realized.

As the amplifier “beds in” the sound will become increasingly

smoother, detailed and open.

Once the amplifier has “bedded in” a warm up time of

approximately 30 to 45 minutes is required each time the

amplifier is switched on before optimum sonic performance is

reached.

Cleaning No special maintenance is required for the amplifier. Use a

soft, clean lint free cloth to remove any surface marks from the

casework. For finger marks / grease, use a soft, clean lint free

cloth, lightly moistened with a solution of warm water and mild

detergent. Do not use any alcohol or solvent based cleaning

products, as they may damage the finish of the amplifier.

ENSURE THAT THE AMPLIFIER IS SWITCHED OFF AND

DISCONNECTED FROM THE MAINS ELECTRICITY

SUPPLY BEFORE UNDERTAKING ANY CLEANING.

Valve Life The valves supplied with your amplifier should provide

approximately 6000 hours of operation. They are specially

selected by us, and should only be replaced with matched

pairs. Please consult your Audio Note (UK) dealer should your

valves need replacing.

OPERATION

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