VINCENT STU-3 Owner's manual

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2

Vincent

Sehr geehrter Kunde,

wir danken Ihnen für das Vertrauen, welches Sie uns durch die Entscheidung für dieses hochwertige Audio-

Produkt, das Ihrem hohen Anspruch an Klang- und Verarbeitungsqualität gerecht wird, entgegenbringen.

Auch wenn Sie verständlicherweise sofort beginnen wollen, das Gerät zu verwenden, lesen Sie bitte vor

dem Aufstellen und Anschließen dieses Handbuch sorgfältig durch. Es wird Ihnen bei der Bedienung und

der optimalen Nutzung des Gerätes in Ihrem System helfen, selbst wenn dieses durch Ihren Fachhändler

installiert wurde.

Bitte beachten Sie vor allem die Sicherheitshinweise, auch wenn einige davon offensichtlich erscheinen mögen.

Um Ihnen verwendete Fachbegriffe zu erläutern, ist ein kleines Lexikon im Anhang enthalten. Bei eventuel-

len Fragen steht Ihnen Ihr Fachhändler gern zur Verfügung, er ist auch Ihr Ansprechpartner im Fall der

Garantie-Inanspruchnahme oder für Reparaturen nach dem Gewährleistungszeitraum. Er ist in jedem Fall

interessiert daran, dass Sie ihm Ihre Erfahrungen mit Vincent-Produkten mitteilen.

Viel Freude mit unserem / Ihrem Produkt wünscht Ihnen

Ihr Vincent-Team

Dear Customer,

we thank you for the confidence you prove in purchasing our product. It will match your high demands

towards sound and manufacturing quality. Though it is understandable that you want to plug and play

this product instantaneously, we encourage you to read this manual carefully before installation.

It will help you in handling and operating this machine in your system and obtaining the best possible

performance, even if it was installed by your dealer.

Please follow the security precautions, though some of those things may seem obvious.

In the appendix to this manual you will find a glossary explaining some established technical terms.

If there are open questions your audio specialist dealer will help you. He also represents your contact

person in case of needed warranty service or repairs after the warranty period and is interested to hear

from your experiences with Vincent products.

We wish you plenty of joy with your / our product,

your Vincent-Team

Cher client,

nous vous remercions de la confiance que vous nous témoignez en achetant ce produit de haute qualité.

Il répondra à vos attentes élevées en termes de qualité sonore et de fabrication.

Même si l'on peut comprendre que vous ayez envie d'utiliser immédiatement cet appareil, nous vous prions

de lire soigneusement ce manuel avant son installation et son branchement. Il vous aidera à manier et uti-

liser l'appareil de manière optimale dans votre système, même si celui-ci a été installé par votre revendeur.

Veuillez respecter les consignes de sécurité, même si certaines peuvent vous paraître évidentes.

Vous trouverez à la fin de ce manuel un petit glossaire qui vous explique les termes techniques utilisés.

Votre revendeur est à votre disposition pour répondre à vos questions. Il est aussi votre interlocuteur en

cas de recours à la garantie ou pour les réparations après la période de garantie. Dans tous les cas, vos

expériences avec les produits Vincent l'intéressent, n'hésitez pas à lui en faire part.

Nous vous souhaitons beaucoup de plaisir avec notre / votre produit.

Votre équipe Vincent

Vincent

3

INHALTSVERZEICHNIS/CONTENTS/SOMMAIRE

Sicherheitshinweise 4

Weitere Hinweise 5

Lieferumfang 6

Beschreibung des Gerätes 6

Fernbedienung 9

Installation 12

Bedienung des Gerätes 14

Weitere Tipps 17

Fehlersuche 18

Technische Daten 20

Lexikon/Wissenswertes 21

Safety guidelines 22

Other instructions 23

Included in delivery 24

Description of the appliance 24

Remote control 27

Installation 30

Operating the appliance 32

Tips 35

Search for errors 36

Technical specifications 38

Glossary 39

Consignes de sécurité 40

Autres consignes 41

Contenu de la livraison 42

Description de l'appareil 42

Télécommande 45

Installation 48

Utilisation de l'appareil 50

Conseils 53

Résolution de problèmes 54

Caractéristiques techniques 56

Glossaire 57

english

français

deutsch

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SAFETY GUIDELINES

This appliance was produced under strict quality controls.

It complies with all established international safety standards.

Nonetheless, the following instructions should be fully read and

observed in order to prevent any hazard:

Cleaning

Pull out the power plug before cleaning the outside

of the product. Whenever possible, use a soft, lint-

free cloth that has been dampened. Do not use abra-

sives, solvents, thinners, flammable chemicals, polis-

hes and other cleaning products that leave marks.

Batteries

Take note of the instructions for using batteries in

the chapter "Remote Control".

Maintenance/Alterations

All equipment that is connected to the domestic mains

voltage can be dangerous to the user if not handled

properly. Leave maintenance work to qualified profes-

sionals. The product is only permitted for connection

to AC 230Volt/50Hz, for earthed sockets and use in

enclosed areas. Altering the product or manipulating

its serial number voids the warranty. After a fault,

leave the appliance’s fuse to be replaced only by a

professional with one of the same kind.

Power Cable Connection

Always pull the plug and never the power cable if

you want to disconnect the appliance from the

mains power. Make sure when setting up the appli-

ance that the power cable is not squashed, severely

bent or damaged by sharp edges. Do not touch the

power lead with wet or damp hands. Use the power

cable supplied or another one from Vincent.

Switching Off

Switch the appliance off every time before you con-

nect or remove other components or loudspeakers,

disconnect or connect it to the mains power, leave it

unused for a longer period or want to clean its outsi-

de. On all amplifiers and receivers, wait approx. 1

minute after this before disconnecting or reconnecting

the cable.

Moisture/Heat/Vibration

Contact of electrically operated equipment with

liquids, moisture, rain or water vapour is dangerous

for such equipment and the user and must be avoi-

ded without fail. Take care that no liquids or objects

get inside the appliance (ventilation slots etc.).

It must be disconnected from the mains power imme-

diately and examined by a professional if this hap-

pens. Never expose the appliance to high tempera-

tures (direct sunshine) or strong vibration.

Heat Build-up

Make sure that a gap of 5 cm remains around the

appliance and that the surrounding air can circula-

te (do not install in enclosed cupboards). Vents must

not be covered up.

Volume

The maximum tolerable volume is always reached well

below the maximum possible setting on the amplifier.

Be careful with the volume setting, therefore, in order

to prevent damage to hearing. So that you do not

expose yourself to high volumes unintentionally, always

set to a low level before changing the input channel.

ON

OFF

Do not open the appliance! Risk of electric shock!

There are no parts in the appliance that require maintenance by the user.

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23

Setting up the appliance

How the system is set up has an effect on the

sound quality. Therefore only place it on a suitab-

le, stable surface. To make the most of your

system’s sound quality, we recommend placing the

equipment on Vincent racks and not putting them

on top of each other.

Old electronic equipment

This appliance is subject to the conditions set out

in the European Directive 2002/96/EC. This is

identified by the symbol of a crossed out waste bin

on the appliance.

What this means for you as a consumer:

All old electrical and electronic equipment that is

no longer used must be disposed of separately

from domestic waste using places provided by the

authorities. By doing so you can prevent damage

to the environment and help to encourage manu-

facturers to produce more durable or reusable pro-

ducts. For further information about disposing

your old appliance, please consult your local aut-

hority, waste disposal agency or the shop where

you bought the product.

CE sign

This appliance complies with the current EU direc-

tives about attaining the CE mark and thus meets

the requirements for electrical and electronic

equipment (EMC regulations, safety regulations

and regulations for low voltage equipment).

Declarations

This document was written by Andreas Böer. It is a

product of Sintron Vertriebs GmbH, 76473

Iffezheim and may not be copied or distributed part-

ly or in full without express, written consent.

Vincent is a registered trademark of Sintron Vertriebs

GmbH, 76473 Iffezheim.

Vincent works continually to improve and develop its

products. Therefore, the appearance and technical

design of the appliance are subject to changes, as

long as they are in the interest of progress.

The content of these instructions is for information pur-

poses only. It can be changed at any time without prior

notice and does not constitute any obligation on the

part of the trademark’s owner. The latter assumes no

responsibility or liability for errors or inaccuracies,

which may be included in these operating instructions.

Storage of the packaging

We strongly recommend that you keep the original

packaging in case you need to transport the equip-

ment again at a later date. Transport damages are

mainly caused by improper packaging of the HiFi-

devices. Because the original packaging fits the

equipment accurately it will reduce the risk of

damage if transport is necessary.

Explanation of the symbols

The lightening bolt tells you that dangerous

voltages are present in the appliance, which

can cause an electric shock.

This symbol brings your attention to

particularly important information regarding

operation and maintenance.

This symbol identifies useful information and

advice about how to handle the appliance.

OTHER INSTRUCTIONS

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INCLUDED IN DELIVERY

DESCRIPTION OF THE APPLIANCE

Please check the contents of the packaging, which in addition to the

appliance should contain the following accessories:

• 1 power cable

• 1 stereo set of RCA cables to connect the main amplifier

• 1 remote control “TU-RC3”

• 2 battery cells size AA (LR6)

• 1 loop antenna

• 1 FM (VHF) wire antenna

• this manual

Despite the fact that development is constantly

moving in the direction of digital audio format and

towards audio video systems with an increasing

number of channels, high quality stereo systems

still enjoy a large degree of popularity.

STU-3 is a remote controllable FM/AM tuner from

the Vincent powerLine. In his class it presents a

comprehensive feature list: different RDS services,

30 station presets as well as a display with adjus-

table brightness setting. Highest quality of manu-

facturing and maximum value for money again

prove to be Vincent’s virtues.

This tuner is a perfect partner for amplifiers as well

as DVD players, CD players, tuners, headphone

amplifiers and loudspeakers from the Vincent

range. In combination with the HiFi furniture and

speaker cables from the range, one can build a

perfectly harmonious system.

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25

1. POWER

This is the main power switch for turning on and

off the device. The tuner is separated from the

mains voltage when switched off and cannot be

set into a standby state.

2. RDS MODE

With this button the various RDS services can be

displayed on the front panel or the RDS system

can be switched off.

3. TUNING MODE

With this button you determine the functionality of

“TUNING PRESET”: make them do a manual fre-

quency scan, an automatic search run or switch

between saved stations.

4. ST/MONO

With this, one can switch over between stereo

and mono reception in the operating mode “FM”.

It is an important option for receiving FM stations

with weak signals.

5. Display

In normal operation shows either the name of the

selected input channel or frequency and RDS

information of the radio stationed it is tuned to. In

tuner mode additional information about the ope-

ration mode is shown.

6. Number keys

Using these buttons you can input a station fre-

quency or a preset number.

7. AM/FM

This button helps in switching over between recei-

ving FM stations and medium wave stations (AM).

8. MEMORY

This button is required for saving a radio frequen-

cy to one of the station presets.

9. TUNING PRESET :

With these buttons, a search run through the fre-

quency band can be initiated (automatic, manual

or through all station memory).

10. DIRECT: numerical frequency input

After pressing this button, a transmitter frequency

can be entered by using the number buttons

(6)(21), which the tuner then sets up.

FRONT VIEW

1 2 3 4 7 8 9 10

5 6

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11. 75Ω FM ANTENNA: VHF antenna socket

Connect a coaxial antenna cable here for FM

radio reception. If there is no antenna wall socket

a room antenna or the wire antenna supplied can

be used.

12. LOOP ANTENNA:

Socket for the AM antenna

Connect the loop antenna supplied or an outdoor

antenna here if you require medium wave reception.

13. OUTPUT: Stereo Audio Output

Via this high-level output, the tuner is connected to

an amplifier, preamplifier etc..

14. FUSE: Fuse holder

This small plastic housing holds the fuse. Refer to

the security precautions.

15. AC 220-240V: Power Connector

To establish the power supply, connect the plugs

of the power cable to the device and to a suitab-

le wall outlet.

REAR VIEW

13 14 16 17 18

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Point the front of the remote control directly at

the front of the appliance, making sure there

are no objects between the remote control and

the appliance.

The distance between the remote control and the

appliance should not be more than 7 m, as the

reliability of the remote control is affected beyond

this range.

Only use AA (LR6) size batteries.

REMOTE CONTROL

BATTERIES

Make sure that you do not point the remote control

at an angle to the appliance, as beyond an angle

of ±30° to the centre axis the appliance may not

respond as well to the remote control.

Change both batteries if the distance at which the

remote control can be used effectively decreases.

Using batteries

Handling batteries incorrectly can cause battery

acid to escape or an explosion in extreme cases.

The batteries must be correctly inserted taking note

of the polarity, which is marked in the inside of the

battery compartment.

In order to make full use of the batteries’ life, do

not mix new and used batteries. Make sure that

you insert batteries of the same type.

Some batteries are rechargeable, others are not

however. Take note of the precautions and instruc-

tions that are included on all batteries.

Remove the batteries if the remote control is not

going to be used for a long time.

Under no circumstances must batteries be short-cir-

cuited, taken apart or heated up.

For environmental reasons, used batteries should

be disposed of in accordance with local environ-

mental regulations and not put with domestic

waste.

c

Changing/Inserting batteries:

a)

Open and close the battery compartment cover of

the remote control by pushing this cover on the back-

side of the remote control in the direction of the

arrow marked on it and then removing it.

b) If necessary, remove used batteries and insert

new ones correctly as shown by the diagram in

the battery compartment.

c) Put the compartment cover back on and close the

battery compartment.

b

a

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BUTTONS OF THE REMOTE CONTROL

16

17

18

19

20

25

23

24

21

22

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BUTTONS OF THE REMOTE CONTROL

16. DIMMER: brightness setting of the display

Use this button to lower the brightness of the dis-

play (5) or switch off the display.

17. DIRECT

Once this knob is pressed, a known radio station

frequency can be input directly using the numeri-

cal keys (6)(21) when in radio mode.

18. AUTO MUTE

This activates or deactivates the volume mute

during the manual search process in radio mode

and suppresses noise from interference between

stations.

19. AM/FM

This button is used to select one of the frequency

bands, AM (medium wave) or FM (VHF). A suitab-

le antenna for each mode must be connected to

the appliance (11)(12).

20. TUNING MODE

This allows you to choose between three settings

which determine the function of the keys “TUNING

PRESET” (9)(24): “MANUAL” (manual frequency

search), “AUTO” (automatic frequency search) or

“PRESET” (change between stations stored in the

memory).

21. Number keys

Buttons 0-9 let you input the frequency or select a

station from the memory.

22. MEMORY

This button enables the presets in the memory to

be stored in tuner mode.

23. ST/MONO

In tuner mode, you can change between the stati-

on’s stereo and mono reception. If a station’s

reception is of low quality in stereo, the sound qua-

lity can be increased by the “MONO” setting.

24. TUNING PRESET UP/DOWN

These keys are used to set a radio station in tuner

mode. The function of these keys are determined

by the setting made with the button “TUNING

MODE” (3)(20).

25. RDS MODE

This button can be used in FM mode to switch on

RDS (Radio Data System) for stations that support

this service. The RDS feature allows various radio

station text services to be shown on the applian-

ce’s display (5).

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Cable connections

Make sure that all plugs fit tightly. Inadequate con-

nections can cause noise interference, failures and

malfunctions.

To make the most of the components’ sound poten-

tial, only high quality loudspeakers and connecting

cables, for example Vincent cables, should be

used. Your local stockist will be glad to advise you

about this.

Protective caps

Prior to the first installation the protective plastic

caps must be removed from all the connections

used at the rear of the unit.

RCA connections

Make sure that you do not mix up the analogue con-

nectors for right and left. The RCA plugs for these are

mostly colour coded as follows: red for the right

channel, black or white for the left channel.

Set up the cable links in a sequence as follows. Connect the power cable between device

and power supply only after all other connections have been made.

DURING INSTALLATION PLEASE OBSERVE

THE FOLLOWING ADVICE:

1

2

OU

OUTPUT

- wrong - - correct -

INSTALLATION

CONNECTION OF THE POWER CABLE

Check that the electricity supply to your home is appropriate to the device. The required voltage and fre-

quency can be read on the back of the device beside the socket for the mains. If the electricity supply is

appropriate, push the inlet connector of the supplied mains cable firmly into socket for the mains on the

back of the device (15). Connect the other end of the mains cable to a mains socket.

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31

STU-3

LOOP ANTENNA

CONNECTING THE ANTENNA

If a wall socket is available for the VHF antenna connection of satellite, cable or a roof aerial, connect its

radio socket with the input socket “FM 75Ω” (11) on the appliance. Use a 75Ω antenna cable for this pur-

pose. If such a socket is not present, the wire antenna supplied or a room antenna available from a local

stockist can be connected.

If you wish to receive medium wave stations (AM), connect the loop antenna supplied to the terminal mar-

ked “LOOP ANTENNA” (12). Placement and direction of frame antenna have a great influence on the qua-

lity of reception. In case none of the possible/recommended positioning options of this antenna provides

a satisfactory reception, an AM outdoor antenna should be used.

TV

Wall Socket

R

Wire Antenna

or Room Antenna

CONNECTION TO AMPLIFIER,

RECEIVER OR PREAMPLIFIER

Connect the RCA output sockets “OUTPUT” (13) with the sockets of the high level input of the preampli-

fier, integrated amplifier, receiver or another suitable device (headphone amplifier, recording input of a

tape recorder etc.). In most cases the input is labelled “TUNER,” “LINE IN” or “INPUT FRONT R/L”. More

information you will find in the user manual of this device.

STU-3

Preamplifier,

Amplifier etc.

S6 S5 S4 S3

INPUT

RCA connexion

32

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OPERATING THE APPLIANCE

Operation Button(s) Description

Switch on and off

POWER (1)

The appliance does not have a standby switch, it is switched on and off at the

front. When switched off it is disconnected from the power supply. Before swit-

ching on, the volume setting on the amplifier/preamplifier/receiver should, as

a precaution, be reduced.

Select the frequency

band

AM/FM

(7)(19)

This button is found on both the remote control and the front of the appli-

ance. This allows you to switch between the FM (VHF) and AM (MW)

modes when the radio is on. VHF offers better sound quality and a greater

selection of stations. The display shows you the abbreviation “AM” or

“FM”, depending on the frequency band setting you have chosen.

Switch between

stereo/mono

ST/MONO

(4)(23)

This button is found on both the remote control and the front of the appliance.

If a station can only be received with poor quality in stereo, there is an option

of listening to it in mono mode. This can improve the sound quality. Switching

between these two is only possible for FM stations. Whilst this setting is active,

the display shows “MONO” in small letters.

Select a radio frequency

in manual search mode

TUNING

MODE

(3)(20)

TUNING

PRESET

UP/DOWN

(9)(24)

Use the “TUNING MODE” button on the front of the appliance or on the

remote control to select from the three possible settings (function of the but-

tons “TUNING PRESET”) the option “MANUAL”. As long as this mode is

selected you can change the radio frequency up or down in steps of 0.05

MHz for FM and 9 kHz for AM, using the buttons “TUNING PRESET”. If you

have found a station with a strong enough signal, this is signalled by the

abbreviation “TUN” in the display. If “ST” is displayed, the station can be

played back in stereo. If “RDS” is displayed, the station offers RDS services.

As long as the manual scan mode is selected, the text “AUTO” does not

appear in the display. If “RDS” is displayed, the station offers RDS services.

Select a radio frequency

in Autoscan mode

TUNING

MODE

(3)(20)

TUNING

PRESET

UP/DOWN

(9)(24)

Use the “TUNING MODE” button on the front of the appliance or on the

remote control to select from the three possible settings (function of the but-

tons “TUNING PRESET”) the option “AUTOSCAN”. As long as this mode is

selected the display shows the text “AUTO”. Now the buttons “TUNING

PRESET” make the tuner step through all frequency settings automatically if

touched once. The automatic search stops when the tuner has found a fre-

quency at which a radio station can be received. If the tuner has found a

station with a strong enough signal, this is signalled by the abbreviation

“TUN” in the display. If “ST” is displayed, the station can be played back in

Stereo. The scan process can be stopped by one more actuation of “UP” or

“DOWN”. If “RDS” is displayed, the station offers RDS services. The scan

process can be stopped by one more actuation of “UP” or “DOWN”. If

“RDS” is displayed, the station offers RDS services.

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33

OPERATING THE APPLIANCE

Operation Button(s) Description

Select a radio station by

inputting its radio

frequency numerically

DIRECT

(10)(17)

Number keys

(6)(21)

To input a known station frequency directly, you can proceed as follows:

Press the “DIRECT” button. The tuner waits for an entry using the numerical

keys in the next few seconds. In FM mode, 4 or 5 numbers need to be

entered, two of which come after the decimal point of the frequency in

MHz. For a FM frequency below 100MHz you need not enter the leading

Zero “0”. If an invalid frequency is entered, the appliance corrects this to

the nearest valid frequency.

Change to playback

from a preset station

TUNING

MODE

(3)(20)

Number keys

(6)(21)

TUNING

PRESET

UP/DOWN

(9)(24)

You are able to store up to 30 radio frequencies for each of the frequency

bands (FM, AM) and select them using their positions in the memory. If sta-

tions have already been stored, one of them can now be selected by ente-

ring the position in the memory with the numerical keys. If a single digit sta-

tion number (1-9) needs to be selected, it can be entered by pressing a

corresponding button. In case of a two-digit station number, the button “0”

should be pressed as many times as the corresponding tens. If the second

digit of the station number is zero, then no additional keystroke is needed.

If the second digit is a number between 1-9, then the units should be ente-

red with the corresponding buttons 1-9. Example: For station number 22,

“0” is pressed twice, and after that “2” is pressed once. To search through

all the stations stored, the “TUNING MODE” button can be used to select

the option “PRESET” (search through all stations stored). Using the buttons

“TUNING PRESET” it is now possible to go through all the positions alrea-

dy stored.

Storing stations (Presets)

MEMORY

(8)(22)

Number keys

(6)(21)

To store a new preset in memory, select the radio frequency as already descri-

bed. Then press “MEMORY” followed by a two-digit number from the numeri-

cal keypad to set the required position (1 to 30). The setting only becomes

effective by pressing “MEMORY” again. The station number in such a case is

entered in the following way: If a single digit station number (1-9) needs to be

selected, it can be entered by a corresponding keystroke. With two digit stati-

on number, the button “0” button should be pressed as many times as the cor-

responding tens. If the second digit of the station number is zero, then no addi-

tional keystroke is needed. If the second digit is a number between 1-9, then

the units should be entered with the corresponding buttons 1-9. Example: For

station number 22, “0” is pressed twice, and after that “2” is pressed once.

30 station presets are available for each of the frequency bands (AM and

FM), respectively.

Mute the Volume during

frequency search

AUTO MUTE

(18)

A volume mute function during manual frequency search (“AUTOSCAN”

tuning mode is active) can be switched on and off with this button. It cuts

out interference between the station frequencies. This function is only availa-

ble using the remote control.

34

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OPERATING THE APPLIANCE

Operation Button(s) Description

Radio Data

System (RDS)

RDS MODE

(2)(25)

RDS (Radio Data System) enables text information transmitted from VHF stati-

ons to be displayed. However, not every station includes RDS in its transmissi-

on signal. By pressing (maybe repeatedly) the “RDS” button, you can switch

the service on and off as well as select the different types of text information.

By actuating (repeatedly, if needed) the button “RDS MODE” the RDS service

can be switched on or off as well as the various options of text information

can be selected. “RDS” is displayed on the screen, if one of the RDS modes is

activated. The set RDS mode remains saved till the next time the tuner is swit-

ched on. The STU-3 supports three following RDS modes:

PS Station name the station name is shown on the display

using a maximum of eight characters.

CT Time display the time is shown. The display shows the

current time, for example “CLK 17:09”.

PTY Programme type the type of radio broadcast (for example

“CLASSIC”, if mainly classical music is

played) is displayed.

RDS OFF RDS switched off only the station frequency can be seen.

Change the brightness

of the front panel dis-

play

DIMMER

(16)

This function can only be operated using the associated remote control but-

ton. When repeatedly pressed, the display (2) brightness is sequentially

reduced (1x or 2x), switched off (3x) and restored to the original, maxi-

mum brightness (4x).

PS PTY CT

RDS OFF

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35

Burn in/ Warm up

Your audio components need a certain time

period until they reach maximum performance.

The duration of this “warm up“ time is very diffe-

rent for the various elements of your audio system.

Higher and homogeneous sound quality is achie-

ved while keeping the device switched on.

Your audio specialist dealer has enough experi-

ence to give you more information.

Net frequency noise

Some audio source devices may in combination

with the amplifier cause a humming noise at

power line frequency audible from your speakers.

Usually, its volume varies with the volume setting

of the amplifier. This is no sign of a defect or fault

of your audio products but has to be eliminated.

Generally, every wall-powered device connected

to the ground wire of the power plug can cause

this problem when connected to the amplifier.

Experience shows that this problem is mainly cau-

sed by antenna-connected components (as TV-sets

or Tuners), personal computers, electrostatic loud-

speakers, subwoofers, record players or headpho-

ne amplifiers that are connected to the audio

inputs of the amplifier. Another possible reason for

humming noise is electromagnetic interference of

other components’ power supplies with pick-up-

systems of record players (change the place of the

record player for a test).

In most electric devices the ground potentials of all

signals are connected to each other at one central

point, where they have one common connection.

If the device uses the protective conductor of the

wall outlet, the corresponding wire of the line cord

is connected intractably to the metal housing of

the device. This is mostly the point where the cen-

tral grounding point is attached to. By doing this

the housing is able to shield all signals from exter-

nal radiated noise. Some main amplifiers are

equipped with a "Ground Lift" switch. If it is acti-

vated, ground potential of the chassis and the pro-

tective ground wire are being separated from the

central signal ground point. The protective ground

wire keeps its function. Sometimes this helps pre-

vent noise caused by errors in grounding.

If the problem occurs and cannot be solved by

yourself your audio specialist dealer will help you.

TIPS

36

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SEARCH FOR ERRORS

Symptom Possible Cause Countermeasure

Unit does not work

after pressing the

power button

Mains cable is not connected to a suitable

mains wall outlet.

Mains cable has not been firmly inserted into

wall power socket and the device’s socket.

Otherwise it may be defective.

Unit fuse or unit is defective.

Connect to a functioning socket using a suit-

able mains voltage.

Check the power cable. If necessary,

exchange it with a suitable mains cable and

push its plug firmly into wall socket and the

device's power connector.

Contact your dealer.

No sound on both

channels although

the unit is ready for

use (LED “WARM UP“

is lit)

The output of the tuner is not connected or is

not connected correctly to the selected input

channel terminal of the amplifier.

No frequency with a strong enough signal is

tuned.

No appropriate antenna corresponding to the

frequency band (AM/FM) is attached to the

tuner.

A wrong input channel has been selected at

the amplifier.

Volume level has been set too low.

The amplifier is muted (MUTE-Function).

Correct the connection.

Set a station frequency with a strong signal. In

case of AM reception, try to position the anten-

na in a better way.

Attach an appropriate antenna (11)(12).

Set the amplifier to the input that your desired

source is connected to.

Carefully increase the output level.

Deactivate the MUTE function after, as a pre-

caution, reducing the volume level.

No audio playback

on one channel

One of the signal cables between tuner out-

put and (pre-)amplifier input has not yet been

plugged in or is defective.

Check the cable connections, tighten them if

necessary.

Weak reception

or no reception

Antenna not or not properly connected.

The antenna for medium wave (AM) is not

positioned correctly.

Source of disturbance is near.

The operating mode (AM, FM) is in the

wrong setting.

The signal of FM station is too weak (transmit-

ter is possibly at a great distance).

Check the connection of the antenna (11)(12)

belonging to the selected operating mode

(AM, FM).

Try various possibilities for placing and posi-

tioning the antenna.

Try to locate and eliminate the disturbance.

Change the operating mode (AM, FM) with

the button “AM/FM” (7)(19).

Try to improve the reception by pressing the

button “ST/MONO” (4)(23) or search for

another station.

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37

SEARCH FOR ERRORS

Symptom Possible Cause Countermeasure

No RDS

An AM station has been selected, only FM

stations support RDS.

The FM station does not support RDS.

RDS function is switched off.

Live without this service or tune to another FM

station.

Live without this service or tune to another FM

station.

Switch on the function with the button “RDS

MODE” (2)(25).

Poor sound quality

The cable connections are not tight, the con-

nectors are dirty or a cable is defective.

Check the cables and cable connections.

The remote control

cannot perform any

functions

No batteries inserted in the remote control,

batteries are not inserted correctly or are

depleted.

The line-of-sight between the remote control

and the unit is obstructed, the range was

exceeded or the hand unit was operated

from a position too far to one side.

The unit is not switched on.

Check and replace the batteries if necessary.

Try to point the remote control at the front of

the unit only when the sight-line is clear, wit-

hin a 7-metre distance and, if possible,

facing the unit.

Switch on the unit.

Humming low fre-

quency noise is

audible, even as

no audio source

is playing back

See section “Net frequency noise” in the

chapter “Tips”.

See section “Net frequency noise” in the

chapter “Tips”.

38

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General Specifications

Outputs: 1x stereo RCA analog

AC power connection type: 230 V / 50 Hz AC

Dimensions (W x H x D): 430 x 72 x 330 mm

Weight: 5,2 kg

Colour: black/silver

FM Tuner

Frequency range: 87 MHz – 108 MHz (50 kHz steps)

Sensitivity: 5 dBµ mono

Frequency Response: 30 Hz - 15 kHz, +1 dB/-1,5 dB

Channel Separation: > 40 dB

Total Harmonic Distortion (1 kHz): mono: 0,4%, stereo: 0,5%

Signal to noise ratio: mono: 72 dB, stereo: 70 dB

Antenna input: 75 Ω

AM Tuner

Frequency range: 522 kHz -1611 kHz (steps of 9 kHz)

Sensitivity: 65 dBµ/m

Total Harmonic Distortion (1 kHz): 0,8% at 80% mod.

Signal to noise ratio: 50 dB at 80% mod.

Antenna input: Frame antenna or outdoor antenna

TECHNICAL SPECIFICATIONS

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39

GLOSSARY

Audio Sources/Source devices

These are the components of your HiFi system and

all other appliances, whose sound you want to hear

over the system and are thus connected to the pre-

amplifier, amplifier or receiver. This includes CD

players, DVD players, FM tuners, cassette players,

DAT recorders, personal computers, record players,

portable audio devices and many more.

Input sensitivity

Term for the smallest average (RMS) input voltage

which causes the maximum output power at the

maximum volume setting on the amplifier.

Examples: 100 mV to 500 mV (Millivolts) on line

level inputs, 2 mV to 5 mV on the phono MM input

or 0.1 mV to 0.5 mV on the phono MC input.

dB Level

This is a way of describing any physical quantity; it

is a common measurement for signal voltages and

the volume. It is given in decibels (dB). Alternating

signal voltages below 1V (RMS) are described as

“line level” voltages, which are suitable as music

signals for amplifier inputs. Inputs on amplifiers

(mostly represented by RCA sockets), which are desi-

gned for signals on the CD player, tape recorder,

DVD player etc. are also referred to as “line level

inputs”. Those signal inputs must not be confused

with inputs that accept preamplified signals.

RCA

RCA is the American name for a type of coaxial

connectors and sockets, originally the abbreviati-

on for “Radio Corporation of America”, the name

of a United States company. Both the plug and

cable consist of a rod-shaped inner lead and a

cylindrical-shaped outer lead. This enables a

mono audio signal or a video signal to be trans-

mitted. Compared to the XLR plug connector, this

type of connection is also called “unbalanced

signal connection”.

Dynamics

The volume difference between the quietest and

the loudest sounds possible in audio signals, wit-

hout distortion or transition to noise.

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VINCENT STU-3 Owner's manual

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