Audio Note P1 Technisches Handbuch

STEREO POWER AMPLIFIER

OWNERʼS INFORMATION

1) IMPORTANT SAFETY INFORMATION

2) CE DECLARATION OF CONFORMITY

DISPOSAL

POWER REQUIREMENTS

3) INTRODUCTION

4) OVERVIEW

UNPACKING AND INSTALLATION

5) CONNECTION

6) OPERATION

7) TECHNICAL SPECIFICATIONS

8) WARRANTY INFORMATION

9) 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) P1 stereo power amplifier.

It is a Pure Class A, Push-Pull valve design, producing an outstanding level of

performance and value.

It has been specifically engineered for sonic performance rather than technical

specification, and fulfills all Audio Note (UK) Level 1 criteria: -

Pure Class A Push-Pull Pentode operation

Materials and component quality

A high gain power amplifier stage is used consisting of an ECC83 dual triode acting

as an anode follower for the first stage, the output of which is applied to a second

anode follower which feeds the parallel connected EL84 output valves.

The output transformers are custom designed and manufactured by Audio Note (UK),

and are of the highest possible quality.

The power supply is a multi element design, ensuring precise operation of each

circuit stage, whilst a DC supply feeds the low level valve filaments.

Please take care when unpacking your P1 stereo power amplifier. Choose a clean,

clear location to unpack your unit. Be aware that the amplifier is quite 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, and preferably it 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.

P1 STEREO POWER AMPLIFIER

UNPACKING AND INSTALLATION

Line inputs Being a stereo power amplifier, the P1 is fitted with one pair of single

ended / RCA inputs. Looking from behind the amplifier, they are

located at bottom / right hand side of the rear panel. The Black socket

is for the Left channel, the Red socket is for the Right channel.

Connect the output from your preamplifier to these inputs.

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

connection to your speakers, located on the rear panel.

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

are for the LEFT channel and the 3 binding posts on the right are for

the RIGHT channel. Additionally, each set of binding posts is marked

ʻLEFTʼand ʻRIGHTʼ.

Connect the amplifierʼs black speaker output binding post marked as

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

Connect the amplifierʼs 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.

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

that also use a separate ground terminal.

Mains The P1 employs 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 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 P1; it should always be the

LAST component to be switched ON, and the FIRST to be switched OFF.

Turn on the amplifier by using the rotary switch located on the right of the front panel.

The red front panel light should now be lit. The amplifier requires approximately 45

seconds to initialize before it is ready for operation.

Volume Control Unlike most Stereo power amplifiers, the P1 is equipped with a

volume control. When in use with a preamplifier, set the P1

volume control so that the preamplifierʼs volume control is

operating in its optimum range, usually between the 9 oʼclock

and 3 oʼclock positions. This will usually result in the P1ʼs

volume control being set at roughly the 12 oʼclock position.

When using the P1 with a line level source, use the volume

control to set the desired listening level.

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 4000 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

INPUT IMPEDANCE

100 KOhm Line Level

INPUT SENSITIVITY

350mV for full output

MAXIMUM OUTPUT

20 watts RMS per channel into 4 or 8 Ohm loads

CHANNEL BALANCE

+/-0.3dB

TUBE COMPLIMENT

4 x ECC83

4 x EL84

FUSE RATINGS

2A anti-surge (110 / 120V supply)

1.2A anti-surge (220 / 240V supply)

MAX. POWER CONSUMPTION

100 Watts

UNIT WEIGHT

17 KG

SHIPPING WEIGHT

(ORIGINAL PACKAGING)

20 KG

UNIT DIMENSIONS

140mm (h) x 295mm (w) x 450mm (d)

SHIPPING DIMENSIONS

(ORIGINAL PACKAGING)

240mm (h) x 400mm (w) x 550mm (d)

NOTE

Due to Audio Note (UK)ʼs ongoing research and

development program, specifications are subject

to change without notice.

TECHNICAL SPECIFICATIONS

Audio Note (UK) warrants this product to be free from defects in materials and

workmanship for two yearsfrom the original date of purchase from an appointed

Audio Note (UK) dealer, and agrees to cover the cost of parts and associated labour

required to correct such defects, subject to terms & conditions.

This Warranty is offered to the first purchaser only.

Any valves supplied with the unit are warranted for three months from the original

date of purchase.

If the product fails in normal domestic use and during the Warranty period due to the

above described faults or defects, Audio Note (UK) will,at its discretion, repair or

replace the item free of charge within a reasonable time once it has been returned to

Audio Note (UK) or an appointed Audio Note (UK) dealer or service engineer.

Audio Note (UK) is not liable for any shipping charges incurred whilst transporting the

product to or from Audio Note (UK) or an appointed Audio Note (UK) dealer or

service engineer, should the item require service or repair during or after the

Warranty period.

If the product must be shipped, please use the original packaging materials and

include a copy of the original sales receipt along with a note explaining, in as much

detail as possible, the problems you are experiencing with the unit.

Only use a reputable Courier Service or Shipping Agent, and ensure that your

product is insured during transit.

Any servicing, repairs or modificationsnot authorized by Audio Note (UK), or

carried out by persons other than appointed Audio Note (UK) service

engineers will invalidate any warranty.

This Warranty does NOT cover: -

Damage sustained whilst in the possession of a shipping agent, retailer or consumer

and not caused as a direct result of defects in materials or workmanship.

Damage caused by normal wear and tear.

Damage or defects caused by abnormal or unreasonable use.

Damage caused by accident, acts of nature, misuse or neglect.

Damage caused by a failure to follow the operating and installation instructions

supplied with the product.

Damage caused by improper or careless cleaning.

Audio Note (UK) reserves the right to refuse warranty for any component of which

the serial number has been removed, defaced or tampered with.

WARRANTY INFORMATION

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