Audio Note CONQUEST Low Gain Technisches Handbuch

CONQUEST

Low Gain

MONO POWER AMPLIFIERS

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

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.

! 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.

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.

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

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) CONQUEST Low Gain

mono power amplifiers.

They are Pure Class A Parallel Singled Ended valve amplifiersthat use a pair of the

highly regarded 300B triode valves per channel, producing a level of performance

that is radically superior to the vast majority of current designs.

They have been specifically engineered for sonic performance rather than technical

specification, and fulfill 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

Please take care when unpacking your CONQUEST Low Gain amplifiers. Choose a

clean, clear location to unpack them, and be aware that the amplifiers are very

heavy; before attempting to unpack or lift the units, check the weight and if necessary

use more than one person so that they 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 amplifiers. 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 supporting the weight of the units.

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 amplifiers is provided, and that airflow

through any ventilation slots in the casework is not restricted. We recommend a

distance of at least 50cm free space is maintained above the amplifiers, and

preferably they should be sited in free space or on the top shelf of your equipment

rack or table. Please also remember that valve equipment operates at extremely high

temperatures, so a position that is inaccessible to any children or animals is

essential.

CONQUEST LOW GAIN MONO POWER AMPLIFIERS

UNPACKING AND INSTALLATION

The amplifiers are shipped without their valve compliment installed. It is necessary to

install the valves before operation.

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 AMPLIFIERS ARE NOT CONNECTED TO A MAINS

ELECTRICAL SUPPLY, AND THAT THE POWER CORDS ARE NOT CONNECTED

TO THE AMPLIFIER.

Now remove the valves that are packed inside the shipping carton and carefully

unwrap them. Also inspect the amplifiersto check that nothing has become damaged

or dislodged during transit.

You should find the following valves: -

2 x 6J5 Metal input stage valves

4 x 300B output valves

2 x 5U4GB rectifier valves

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. 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.

Now examine the large aperture located in the top plate of each amplifier, between

the single front valve base aperture and the large, black, square transformer cover;

you will notice that two of the four holes in each aperture are larger than the others.

Line up the large pins on the base of the 300B valves and the large holes in each

valve socket, and with gentle but firm pressure insert the valve into its socket.

Next, examine the 6J5 Metal input stage valves. You will see that there is a rib on the

central pin of the valve base, which ensures that it can only be inserted into the valve

socket correctly. Locate this rib and align with the corresponding aperture in the

centre of the valve socket, located in the top plate at the front / centre of each

amplifier. With gentle but firm pressure,insert the valve.

Next, examine the remaining 5U4GB rectifier valves. You will see that there is a rib

on the central pin of the valve base, which ensures that it can only be inserted into

the valve socket correctly. Locate this rib and align with the corresponding aperture in

the centre of the valve socket, located in the top plate towards the rear of the

amplifier, between the two large, black, square transformer covers. With gentle but

firm pressure,insert the valve.

Check one more time that all of the 8 valves are correctly fitted!

VALVE INSTALLATION

Line inputs Being mono power amplifiers, each CONQUEST Low Gain is fitted

with one single ended / RCA input. Looking from behind the amplifiers,

they are located at the right hand side of the rear panels. Connect the

outputs from your preamplifier to these inputs.

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

connection to your speakers.

Looking from the rear of the amplifiers, the 3 binding posts are located

at the right hand side of the rear panels, near to the single ended /

RCA input.

Connect the amplifiers black speaker output binding post marked as

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

loudspeaker.

Connect the amplifiers red speaker output binding post marked “8

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

loudspeaker. The other red 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 combination that produces the best

frequency balance and maximum dynamics should be used.

Mains The CONQUEST Low Gain are equipped with an IEC 320 mains inlet

socket for each amplifier. Use the supplied mains cablesto connect

the unitsto the local mains supply. The mains fuse and a spare are

located in the inlet socket fuse drawer.

Special Note –Make sure that all connectionsare tight and clean. For

best results use good quality audio interconnects. Although it is

perfectly acceptable to use cables manufactured by other companies,

for best results and performance, we recommend our own Audio Note

(UK) range of interconnects and loudspeaker cables. For further

information, please consult your nearest Audio Note (UK) dealer, or

alternatively please feel free to contact us directly.

CONNECTION

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

of your preamplifier / source is at the minimum setting.

Turn on all components in the signal chain BEFORE the CONQUEST Low Gain; they

should always be the LAST components to be switched ON, and the FIRST to be

switched OFF.

Turn on the amplifiersby using the rocker switch located on the rear top left of the

back panels, just above mains inlet socket.

Bedding in The new amplifiersrequires about 200 hours of initial use

(called “bedding in”) before the circuitry becomes stable and

optimum performance is realized.

As the amplifiers “bed in” the sound will become increasingly

smoother, detailed and open.

Once the amplifiers have “bedded in” a warm up time of

approximately 30 to 45 minutes is required each time the

amplifiers are switched on before optimum sonic performance

is reached.

Cleaning No special maintenance is required for the amplifiers. 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 amplifiers.

ENSURE THAT THE AMPLIFIERS ARE SWITCHED OFF

AND DISCONNECTED FROM THE MAINS ELECTRICITY

SUPPLY BEFORE UNDERTAKING ANY CLEANING.

Valve Life The valves supplied with your amplifiers 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

TECHNICAL SPECIFICATIONS

INPUT IMPEDANCE

INPUT SENSITIVITY

MAXIMUM OUTPUT

CHANNEL BALANCE

VALVE COMPLIMENT

UNIT WEIGHT

SHIPPING WEIGHT

(ORIGINAL PACKAGING)

UNIT DIMENSIONS

SHIPPING DIMENSIONS

(ORIGINAL PACKAGING)

MAINS INPUT

MAINS FUSE

MAX. POWER

CONSUMPTION

NOTE

100k ohm

3.3V for full output

18 watts RMS per channel into 4 or 8 Ohm

loads

+/-0.3dB

2 x 5U4GB

4 x 300B

2 x 6J5 Metal

20KG (per amplifier)

30KG (per amplifier)

195mm (h) x 205mm (w) x 500mm (d)

295mm (h) x 320mm (w) x 610mm (d)

AC 100-120V/220-240V 50/60 Hz

3.15A Anti Surge (110/120V Supply)

1.6A Anti Surge (200/240V Supply)

400mA (Internal HT)

200 Watts

Due to Audio Note (UK)’s ongoing

research and development program,

specifications are subject to change

without notice.

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